./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec1_product49.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_397efe0c-d94d-43c1-b2c4-e03900b7b23e/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_397efe0c-d94d-43c1-b2c4-e03900b7b23e/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_397efe0c-d94d-43c1-b2c4-e03900b7b23e/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_397efe0c-d94d-43c1-b2c4-e03900b7b23e/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec1_product49.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_397efe0c-d94d-43c1-b2c4-e03900b7b23e/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_397efe0c-d94d-43c1-b2c4-e03900b7b23e/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5f66ecd5f6aef5b29bc80dee4a57cabf0f421223 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.1.24-6b5699a [2019-11-25 08:58:05,734 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-25 08:58:05,736 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-25 08:58:05,746 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-25 08:58:05,746 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-25 08:58:05,747 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-25 08:58:05,749 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-25 08:58:05,751 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-25 08:58:05,753 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-25 08:58:05,754 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-25 08:58:05,755 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-25 08:58:05,756 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-25 08:58:05,756 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-25 08:58:05,757 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-25 08:58:05,758 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-25 08:58:05,759 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-25 08:58:05,760 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-25 08:58:05,761 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-25 08:58:05,763 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-25 08:58:05,765 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-25 08:58:05,767 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-25 08:58:05,768 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-25 08:58:05,769 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-25 08:58:05,770 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-25 08:58:05,773 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-25 08:58:05,773 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-25 08:58:05,773 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-25 08:58:05,774 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-25 08:58:05,775 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-25 08:58:05,776 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-25 08:58:05,776 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-25 08:58:05,777 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-25 08:58:05,778 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-25 08:58:05,778 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-25 08:58:05,780 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-25 08:58:05,780 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-25 08:58:05,781 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-25 08:58:05,781 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-25 08:58:05,781 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-25 08:58:05,782 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-25 08:58:05,783 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-25 08:58:05,783 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_397efe0c-d94d-43c1-b2c4-e03900b7b23e/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-25 08:58:05,796 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-25 08:58:05,796 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-25 08:58:05,797 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-25 08:58:05,798 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-25 08:58:05,798 INFO L138 SettingsManager]: * Use SBE=true [2019-11-25 08:58:05,798 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-25 08:58:05,798 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-25 08:58:05,799 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-25 08:58:05,799 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-25 08:58:05,799 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-25 08:58:05,799 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-25 08:58:05,799 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-25 08:58:05,800 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-25 08:58:05,800 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-25 08:58:05,800 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-25 08:58:05,800 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-25 08:58:05,801 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-25 08:58:05,801 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-25 08:58:05,801 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-25 08:58:05,801 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-25 08:58:05,801 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-25 08:58:05,802 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-25 08:58:05,802 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-25 08:58:05,802 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-25 08:58:05,802 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-25 08:58:05,803 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-25 08:58:05,803 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-25 08:58:05,803 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-25 08:58:05,803 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 -> /tmp/vcloud-vcloud-master/worker/run_dir_397efe0c-d94d-43c1-b2c4-e03900b7b23e/bin/uautomizer 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(__VERIFIER_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 -> 5f66ecd5f6aef5b29bc80dee4a57cabf0f421223 [2019-11-25 08:58:05,941 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-25 08:58:05,950 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-25 08:58:05,953 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-25 08:58:05,954 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-25 08:58:05,955 INFO L275 PluginConnector]: CDTParser initialized [2019-11-25 08:58:05,955 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_397efe0c-d94d-43c1-b2c4-e03900b7b23e/bin/uautomizer/../../sv-benchmarks/c/product-lines/minepump_spec1_product49.cil.c [2019-11-25 08:58:06,005 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_397efe0c-d94d-43c1-b2c4-e03900b7b23e/bin/uautomizer/data/9ff8015bb/19f4400c2e08403691ab51950c63c3be/FLAG2c008705b [2019-11-25 08:58:06,508 INFO L306 CDTParser]: Found 1 translation units. [2019-11-25 08:58:06,508 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_397efe0c-d94d-43c1-b2c4-e03900b7b23e/sv-benchmarks/c/product-lines/minepump_spec1_product49.cil.c [2019-11-25 08:58:06,530 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_397efe0c-d94d-43c1-b2c4-e03900b7b23e/bin/uautomizer/data/9ff8015bb/19f4400c2e08403691ab51950c63c3be/FLAG2c008705b [2019-11-25 08:58:06,812 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_397efe0c-d94d-43c1-b2c4-e03900b7b23e/bin/uautomizer/data/9ff8015bb/19f4400c2e08403691ab51950c63c3be [2019-11-25 08:58:06,814 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-25 08:58:06,815 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-25 08:58:06,816 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-25 08:58:06,816 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-25 08:58:06,819 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-25 08:58:06,819 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:58:06" (1/1) ... [2019-11-25 08:58:06,822 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64c5be6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:58:06, skipping insertion in model container [2019-11-25 08:58:06,822 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:58:06" (1/1) ... [2019-11-25 08:58:06,827 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-25 08:58:06,870 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-25 08:58:07,248 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:58:07,269 INFO L201 MainTranslator]: Completed pre-run [2019-11-25 08:58:07,343 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:58:07,379 INFO L205 MainTranslator]: Completed translation [2019-11-25 08:58:07,379 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:58:07 WrapperNode [2019-11-25 08:58:07,380 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-25 08:58:07,380 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-25 08:58:07,380 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-25 08:58:07,380 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-25 08:58:07,388 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:58:07" (1/1) ... [2019-11-25 08:58:07,405 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:58:07" (1/1) ... [2019-11-25 08:58:07,453 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-25 08:58:07,453 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-25 08:58:07,461 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-25 08:58:07,462 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-25 08:58:07,469 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:58:07" (1/1) ... [2019-11-25 08:58:07,469 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:58:07" (1/1) ... [2019-11-25 08:58:07,474 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:58:07" (1/1) ... [2019-11-25 08:58:07,474 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:58:07" (1/1) ... [2019-11-25 08:58:07,486 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:58:07" (1/1) ... [2019-11-25 08:58:07,494 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:58:07" (1/1) ... [2019-11-25 08:58:07,497 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:58:07" (1/1) ... [2019-11-25 08:58:07,503 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-25 08:58:07,503 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-25 08:58:07,503 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-25 08:58:07,504 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-25 08:58:07,504 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:58:07" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_397efe0c-d94d-43c1-b2c4-e03900b7b23e/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-25 08:58:07,566 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-25 08:58:07,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-25 08:58:07,566 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-25 08:58:07,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-25 08:58:08,361 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-25 08:58:08,361 INFO L284 CfgBuilder]: Removed 156 assume(true) statements. [2019-11-25 08:58:08,362 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:58:08 BoogieIcfgContainer [2019-11-25 08:58:08,362 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-25 08:58:08,363 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-25 08:58:08,363 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-25 08:58:08,367 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-25 08:58:08,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:58:06" (1/3) ... [2019-11-25 08:58:08,368 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59fd5a72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:58:08, skipping insertion in model container [2019-11-25 08:58:08,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:58:07" (2/3) ... [2019-11-25 08:58:08,369 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59fd5a72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:58:08, skipping insertion in model container [2019-11-25 08:58:08,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:58:08" (3/3) ... [2019-11-25 08:58:08,374 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product49.cil.c [2019-11-25 08:58:08,383 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-25 08:58:08,389 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-11-25 08:58:08,399 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-11-25 08:58:08,425 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-25 08:58:08,425 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-25 08:58:08,425 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-25 08:58:08,425 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-25 08:58:08,426 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-25 08:58:08,427 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-25 08:58:08,427 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-25 08:58:08,427 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-25 08:58:08,449 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states. [2019-11-25 08:58:08,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-25 08:58:08,458 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:58:08,459 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:58:08,459 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:58:08,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:58:08,465 INFO L82 PathProgramCache]: Analyzing trace with hash 1641629540, now seen corresponding path program 1 times [2019-11-25 08:58:08,474 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:58:08,474 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955319639] [2019-11-25 08:58:08,475 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:58:08,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:58:08,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:58:08,669 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955319639] [2019-11-25 08:58:08,670 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:58:08,670 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-25 08:58:08,671 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137528859] [2019-11-25 08:58:08,675 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-25 08:58:08,675 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:58:08,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-25 08:58:08,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-25 08:58:08,687 INFO L87 Difference]: Start difference. First operand 117 states. Second operand 2 states. [2019-11-25 08:58:08,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:58:08,713 INFO L93 Difference]: Finished difference Result 228 states and 347 transitions. [2019-11-25 08:58:08,713 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-25 08:58:08,714 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2019-11-25 08:58:08,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:58:08,724 INFO L225 Difference]: With dead ends: 228 [2019-11-25 08:58:08,725 INFO L226 Difference]: Without dead ends: 113 [2019-11-25 08:58:08,728 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-25 08:58:08,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2019-11-25 08:58:08,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2019-11-25 08:58:08,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2019-11-25 08:58:08,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 165 transitions. [2019-11-25 08:58:08,770 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 165 transitions. Word has length 16 [2019-11-25 08:58:08,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:58:08,770 INFO L462 AbstractCegarLoop]: Abstraction has 113 states and 165 transitions. [2019-11-25 08:58:08,770 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-25 08:58:08,770 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 165 transitions. [2019-11-25 08:58:08,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-25 08:58:08,771 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:58:08,771 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:58:08,772 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:58:08,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:58:08,772 INFO L82 PathProgramCache]: Analyzing trace with hash 594872643, now seen corresponding path program 1 times [2019-11-25 08:58:08,772 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:58:08,773 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766458898] [2019-11-25 08:58:08,773 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:58:08,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:58:08,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:58:08,869 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766458898] [2019-11-25 08:58:08,870 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:58:08,870 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-25 08:58:08,870 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118274713] [2019-11-25 08:58:08,871 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-25 08:58:08,871 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:58:08,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-25 08:58:08,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-25 08:58:08,872 INFO L87 Difference]: Start difference. First operand 113 states and 165 transitions. Second operand 3 states. [2019-11-25 08:58:08,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:58:08,886 INFO L93 Difference]: Finished difference Result 113 states and 165 transitions. [2019-11-25 08:58:08,889 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-25 08:58:08,889 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2019-11-25 08:58:08,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:58:08,892 INFO L225 Difference]: With dead ends: 113 [2019-11-25 08:58:08,892 INFO L226 Difference]: Without dead ends: 47 [2019-11-25 08:58:08,894 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-25 08:58:08,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2019-11-25 08:58:08,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2019-11-25 08:58:08,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2019-11-25 08:58:08,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 68 transitions. [2019-11-25 08:58:08,908 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 68 transitions. Word has length 17 [2019-11-25 08:58:08,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:58:08,908 INFO L462 AbstractCegarLoop]: Abstraction has 47 states and 68 transitions. [2019-11-25 08:58:08,908 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-25 08:58:08,909 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 68 transitions. [2019-11-25 08:58:08,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-25 08:58:08,911 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:58:08,911 INFO L410 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] [2019-11-25 08:58:08,911 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:58:08,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:58:08,912 INFO L82 PathProgramCache]: Analyzing trace with hash 1404483435, now seen corresponding path program 1 times [2019-11-25 08:58:08,912 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:58:08,912 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878506746] [2019-11-25 08:58:08,912 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:58:08,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:58:09,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:58:09,030 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878506746] [2019-11-25 08:58:09,030 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:58:09,030 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-25 08:58:09,030 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068477083] [2019-11-25 08:58:09,031 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-25 08:58:09,031 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:58:09,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-25 08:58:09,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-11-25 08:58:09,031 INFO L87 Difference]: Start difference. First operand 47 states and 68 transitions. Second operand 6 states. [2019-11-25 08:58:09,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:58:09,151 INFO L93 Difference]: Finished difference Result 88 states and 130 transitions. [2019-11-25 08:58:09,151 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-25 08:58:09,151 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2019-11-25 08:58:09,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:58:09,152 INFO L225 Difference]: With dead ends: 88 [2019-11-25 08:58:09,152 INFO L226 Difference]: Without dead ends: 47 [2019-11-25 08:58:09,153 INFO L630 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 [2019-11-25 08:58:09,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2019-11-25 08:58:09,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2019-11-25 08:58:09,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2019-11-25 08:58:09,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 67 transitions. [2019-11-25 08:58:09,159 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 67 transitions. Word has length 22 [2019-11-25 08:58:09,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:58:09,159 INFO L462 AbstractCegarLoop]: Abstraction has 47 states and 67 transitions. [2019-11-25 08:58:09,160 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-25 08:58:09,160 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 67 transitions. [2019-11-25 08:58:09,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-11-25 08:58:09,161 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:58:09,161 INFO L410 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] [2019-11-25 08:58:09,161 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:58:09,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:58:09,162 INFO L82 PathProgramCache]: Analyzing trace with hash -764351347, now seen corresponding path program 1 times [2019-11-25 08:58:09,162 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:58:09,162 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564965930] [2019-11-25 08:58:09,162 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:58:09,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:58:09,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:58:09,215 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564965930] [2019-11-25 08:58:09,215 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:58:09,215 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-25 08:58:09,215 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492733691] [2019-11-25 08:58:09,216 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-25 08:58:09,216 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:58:09,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-25 08:58:09,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-25 08:58:09,216 INFO L87 Difference]: Start difference. First operand 47 states and 67 transitions. Second operand 3 states. [2019-11-25 08:58:09,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:58:09,266 INFO L93 Difference]: Finished difference Result 109 states and 158 transitions. [2019-11-25 08:58:09,267 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-25 08:58:09,267 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2019-11-25 08:58:09,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:58:09,268 INFO L225 Difference]: With dead ends: 109 [2019-11-25 08:58:09,269 INFO L226 Difference]: Without dead ends: 68 [2019-11-25 08:58:09,269 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-25 08:58:09,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2019-11-25 08:58:09,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 66. [2019-11-25 08:58:09,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2019-11-25 08:58:09,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 93 transitions. [2019-11-25 08:58:09,276 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 93 transitions. Word has length 24 [2019-11-25 08:58:09,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:58:09,277 INFO L462 AbstractCegarLoop]: Abstraction has 66 states and 93 transitions. [2019-11-25 08:58:09,277 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-25 08:58:09,277 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 93 transitions. [2019-11-25 08:58:09,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-11-25 08:58:09,282 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:58:09,282 INFO L410 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] [2019-11-25 08:58:09,283 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:58:09,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:58:09,283 INFO L82 PathProgramCache]: Analyzing trace with hash -805303330, now seen corresponding path program 1 times [2019-11-25 08:58:09,283 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:58:09,283 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893920469] [2019-11-25 08:58:09,284 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:58:09,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:58:09,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:58:09,396 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893920469] [2019-11-25 08:58:09,396 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:58:09,397 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-25 08:58:09,397 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645016287] [2019-11-25 08:58:09,397 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-25 08:58:09,397 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:58:09,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-25 08:58:09,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-25 08:58:09,398 INFO L87 Difference]: Start difference. First operand 66 states and 93 transitions. Second operand 5 states. [2019-11-25 08:58:09,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:58:09,504 INFO L93 Difference]: Finished difference Result 175 states and 245 transitions. [2019-11-25 08:58:09,505 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-25 08:58:09,505 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2019-11-25 08:58:09,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:58:09,506 INFO L225 Difference]: With dead ends: 175 [2019-11-25 08:58:09,506 INFO L226 Difference]: Without dead ends: 115 [2019-11-25 08:58:09,507 INFO L630 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 [2019-11-25 08:58:09,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2019-11-25 08:58:09,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 72. [2019-11-25 08:58:09,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2019-11-25 08:58:09,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 99 transitions. [2019-11-25 08:58:09,519 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 99 transitions. Word has length 30 [2019-11-25 08:58:09,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:58:09,520 INFO L462 AbstractCegarLoop]: Abstraction has 72 states and 99 transitions. [2019-11-25 08:58:09,520 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-25 08:58:09,520 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 99 transitions. [2019-11-25 08:58:09,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-11-25 08:58:09,526 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:58:09,527 INFO L410 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] [2019-11-25 08:58:09,527 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:58:09,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:58:09,527 INFO L82 PathProgramCache]: Analyzing trace with hash 1857207713, now seen corresponding path program 1 times [2019-11-25 08:58:09,528 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:58:09,528 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966240376] [2019-11-25 08:58:09,528 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:58:09,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:58:09,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:58:09,605 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966240376] [2019-11-25 08:58:09,606 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:58:09,606 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-25 08:58:09,606 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218992296] [2019-11-25 08:58:09,606 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-25 08:58:09,607 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:58:09,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-25 08:58:09,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-25 08:58:09,607 INFO L87 Difference]: Start difference. First operand 72 states and 99 transitions. Second operand 5 states. [2019-11-25 08:58:09,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:58:09,729 INFO L93 Difference]: Finished difference Result 204 states and 283 transitions. [2019-11-25 08:58:09,730 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-25 08:58:09,730 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2019-11-25 08:58:09,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:58:09,732 INFO L225 Difference]: With dead ends: 204 [2019-11-25 08:58:09,732 INFO L226 Difference]: Without dead ends: 202 [2019-11-25 08:58:09,732 INFO L630 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 [2019-11-25 08:58:09,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2019-11-25 08:58:09,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 72. [2019-11-25 08:58:09,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2019-11-25 08:58:09,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 98 transitions. [2019-11-25 08:58:09,744 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 98 transitions. Word has length 30 [2019-11-25 08:58:09,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:58:09,745 INFO L462 AbstractCegarLoop]: Abstraction has 72 states and 98 transitions. [2019-11-25 08:58:09,745 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-25 08:58:09,745 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 98 transitions. [2019-11-25 08:58:09,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-11-25 08:58:09,746 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:58:09,746 INFO L410 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] [2019-11-25 08:58:09,746 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:58:09,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:58:09,747 INFO L82 PathProgramCache]: Analyzing trace with hash -1198330340, now seen corresponding path program 1 times [2019-11-25 08:58:09,747 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:58:09,747 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520725975] [2019-11-25 08:58:09,747 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:58:09,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:58:09,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:58:09,819 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520725975] [2019-11-25 08:58:09,819 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:58:09,819 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-25 08:58:09,820 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115035958] [2019-11-25 08:58:09,820 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-25 08:58:09,820 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:58:09,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-25 08:58:09,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-25 08:58:09,821 INFO L87 Difference]: Start difference. First operand 72 states and 98 transitions. Second operand 6 states. [2019-11-25 08:58:09,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:58:09,927 INFO L93 Difference]: Finished difference Result 188 states and 256 transitions. [2019-11-25 08:58:09,928 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-25 08:58:09,928 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2019-11-25 08:58:09,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:58:09,929 INFO L225 Difference]: With dead ends: 188 [2019-11-25 08:58:09,929 INFO L226 Difference]: Without dead ends: 122 [2019-11-25 08:58:09,930 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2019-11-25 08:58:09,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2019-11-25 08:58:09,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 76. [2019-11-25 08:58:09,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2019-11-25 08:58:09,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 102 transitions. [2019-11-25 08:58:09,941 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 102 transitions. Word has length 30 [2019-11-25 08:58:09,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:58:09,941 INFO L462 AbstractCegarLoop]: Abstraction has 76 states and 102 transitions. [2019-11-25 08:58:09,941 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-25 08:58:09,941 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 102 transitions. [2019-11-25 08:58:09,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-11-25 08:58:09,942 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:58:09,942 INFO L410 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] [2019-11-25 08:58:09,943 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:58:09,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:58:09,943 INFO L82 PathProgramCache]: Analyzing trace with hash -940164902, now seen corresponding path program 1 times [2019-11-25 08:58:09,943 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:58:09,944 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663731279] [2019-11-25 08:58:09,944 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:58:09,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:58:09,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:58:09,998 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663731279] [2019-11-25 08:58:09,998 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:58:09,998 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-25 08:58:09,999 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382018013] [2019-11-25 08:58:09,999 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-25 08:58:09,999 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:58:09,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-25 08:58:10,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-25 08:58:10,000 INFO L87 Difference]: Start difference. First operand 76 states and 102 transitions. Second operand 3 states. [2019-11-25 08:58:10,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:58:10,031 INFO L93 Difference]: Finished difference Result 172 states and 232 transitions. [2019-11-25 08:58:10,032 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-25 08:58:10,032 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2019-11-25 08:58:10,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:58:10,033 INFO L225 Difference]: With dead ends: 172 [2019-11-25 08:58:10,033 INFO L226 Difference]: Without dead ends: 102 [2019-11-25 08:58:10,034 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-25 08:58:10,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2019-11-25 08:58:10,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2019-11-25 08:58:10,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2019-11-25 08:58:10,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 134 transitions. [2019-11-25 08:58:10,050 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 134 transitions. Word has length 30 [2019-11-25 08:58:10,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:58:10,051 INFO L462 AbstractCegarLoop]: Abstraction has 102 states and 134 transitions. [2019-11-25 08:58:10,051 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-25 08:58:10,051 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 134 transitions. [2019-11-25 08:58:10,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-11-25 08:58:10,056 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:58:10,056 INFO L410 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] [2019-11-25 08:58:10,056 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:58:10,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:58:10,057 INFO L82 PathProgramCache]: Analyzing trace with hash 1346986200, now seen corresponding path program 1 times [2019-11-25 08:58:10,058 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:58:10,058 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057268881] [2019-11-25 08:58:10,058 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:58:10,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:58:10,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:58:10,198 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057268881] [2019-11-25 08:58:10,198 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:58:10,198 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-25 08:58:10,199 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172393558] [2019-11-25 08:58:10,199 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-25 08:58:10,199 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:58:10,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-25 08:58:10,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-25 08:58:10,200 INFO L87 Difference]: Start difference. First operand 102 states and 134 transitions. Second operand 5 states. [2019-11-25 08:58:10,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:58:10,301 INFO L93 Difference]: Finished difference Result 553 states and 737 transitions. [2019-11-25 08:58:10,303 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-25 08:58:10,303 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2019-11-25 08:58:10,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:58:10,305 INFO L225 Difference]: With dead ends: 553 [2019-11-25 08:58:10,306 INFO L226 Difference]: Without dead ends: 457 [2019-11-25 08:58:10,307 INFO L630 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 [2019-11-25 08:58:10,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2019-11-25 08:58:10,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 190. [2019-11-25 08:58:10,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2019-11-25 08:58:10,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 248 transitions. [2019-11-25 08:58:10,337 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 248 transitions. Word has length 31 [2019-11-25 08:58:10,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:58:10,337 INFO L462 AbstractCegarLoop]: Abstraction has 190 states and 248 transitions. [2019-11-25 08:58:10,337 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-25 08:58:10,337 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 248 transitions. [2019-11-25 08:58:10,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-11-25 08:58:10,340 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:58:10,340 INFO L410 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] [2019-11-25 08:58:10,340 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:58:10,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:58:10,341 INFO L82 PathProgramCache]: Analyzing trace with hash 1913811026, now seen corresponding path program 1 times [2019-11-25 08:58:10,341 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:58:10,341 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269555669] [2019-11-25 08:58:10,341 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:58:10,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:58:10,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:58:10,500 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:58:10,501 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-25 08:58:10,607 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 08:58:10 BoogieIcfgContainer [2019-11-25 08:58:10,607 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-25 08:58:10,607 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-25 08:58:10,607 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-25 08:58:10,608 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-25 08:58:10,608 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:58:08" (3/4) ... [2019-11-25 08:58:10,610 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-25 08:58:10,749 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_397efe0c-d94d-43c1-b2c4-e03900b7b23e/bin/uautomizer/witness.graphml [2019-11-25 08:58:10,753 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-25 08:58:10,756 INFO L168 Benchmark]: Toolchain (without parser) took 3939.60 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 117.4 MB). Free memory was 950.1 MB in the beginning and 1.0 GB in the end (delta: -68.6 MB). Peak memory consumption was 48.8 MB. Max. memory is 11.5 GB. [2019-11-25 08:58:10,756 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:58:10,759 INFO L168 Benchmark]: CACSL2BoogieTranslator took 564.01 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 117.4 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -155.5 MB). Peak memory consumption was 17.7 MB. Max. memory is 11.5 GB. [2019-11-25 08:58:10,759 INFO L168 Benchmark]: Boogie Procedure Inliner took 72.82 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-11-25 08:58:10,760 INFO L168 Benchmark]: Boogie Preprocessor took 49.76 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:58:10,760 INFO L168 Benchmark]: RCFGBuilder took 859.28 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 70.7 MB). Peak memory consumption was 70.7 MB. Max. memory is 11.5 GB. [2019-11-25 08:58:10,760 INFO L168 Benchmark]: TraceAbstraction took 2243.62 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: -13.3 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:58:10,761 INFO L168 Benchmark]: Witness Printer took 146.27 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 17.3 MB). Peak memory consumption was 17.3 MB. Max. memory is 11.5 GB. [2019-11-25 08:58:10,765 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 564.01 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 117.4 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -155.5 MB). Peak memory consumption was 17.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 72.82 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 49.76 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 859.28 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 70.7 MB). Peak memory consumption was 70.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2243.62 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: -13.3 MB). There was no memory consumed. Max. memory is 11.5 GB. * Witness Printer took 146.27 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 17.3 MB). Peak memory consumption was 17.3 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 950]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L69] int cleanupTimeShifts = 4; [L545] int pumpRunning = 0; [L546] int systemActive = 1; [L843] int waterLevel = 1; [L844] int methaneLevelCritical = 0; [L342] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L150] int retValue_acc ; [L151] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L833] int retValue_acc ; [L836] retValue_acc = 1 [L837] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L157] tmp = valid_product() [L159] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L743] int splverifierCounter ; [L744] int tmp ; [L745] int tmp___0 ; [L746] int tmp___1 ; [L747] int tmp___2 ; [L750] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L752] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L754] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L760] tmp = __VERIFIER_nondet_int() [L762] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L861] COND TRUE waterLevel < 2 [L862] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L770] tmp___0 = __VERIFIER_nondet_int() [L772] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L873] COND FALSE !(\read(methaneLevelCritical)) [L876] methaneLevelCritical = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L780] tmp___2 = __VERIFIER_nondet_int() [L782] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L552] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L559] COND TRUE \read(systemActive) [L607] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L610] COND FALSE !(\read(pumpRunning)) [L581] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L584] COND TRUE ! pumpRunning [L704] int retValue_acc ; [L705] int tmp ; [L706] int tmp___0 ; [L923] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L926] COND FALSE !(waterLevel < 2) [L930] retValue_acc = 0 [L931] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L710] tmp = isHighWaterSensorDry() [L712] COND FALSE !(\read(tmp)) [L715] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L717] retValue_acc = tmp___0 [L718] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L586] tmp = isHighWaterLevel() [L588] COND TRUE \read(tmp) [L635] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L44] int tmp ; [L45] int tmp___0 ; [L882] int retValue_acc ; [L885] retValue_acc = methaneLevelCritical [L886] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L49] tmp = isMethaneLevelCritical() [L51] COND TRUE \read(tmp) [L659] int retValue_acc ; [L662] retValue_acc = pumpRunning [L663] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L53] tmp___0 = isPumpRunning() [L55] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L950] __VERIFIER_error() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 117 locations, 3 error locations. Result: UNSAFE, OverallTime: 2.1s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 826 SDtfs, 1231 SDslu, 1056 SDs, 0 SdLazy, 148 SolverSat, 30 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 55 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=190occurred 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: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 488 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 262 NumberOfCodeBlocks, 262 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 221 ConstructedInterpolants, 0 QuantifiedInterpolants, 12174 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, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...