./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread/triangular-longer-1.i --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_e873f7c6-81e0-420f-9f9f-04b05de08cbc/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_e873f7c6-81e0-420f-9f9f-04b05de08cbc/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_e873f7c6-81e0-420f-9f9f-04b05de08cbc/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_e873f7c6-81e0-420f-9f9f-04b05de08cbc/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/triangular-longer-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_e873f7c6-81e0-420f-9f9f-04b05de08cbc/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_e873f7c6-81e0-420f-9f9f-04b05de08cbc/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 e24917ef8695200a643e71e238ee3c2cc9fb2120 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-6b5699a [2019-11-25 08:49:47,929 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-25 08:49:47,930 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-25 08:49:47,944 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-25 08:49:47,944 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-25 08:49:47,945 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-25 08:49:47,947 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-25 08:49:47,956 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-25 08:49:47,960 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-25 08:49:47,963 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-25 08:49:47,964 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-25 08:49:47,965 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-25 08:49:47,965 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-25 08:49:47,966 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-25 08:49:47,967 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-25 08:49:47,967 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-25 08:49:47,968 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-25 08:49:47,969 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-25 08:49:47,970 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-25 08:49:47,973 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-25 08:49:47,977 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-25 08:49:47,980 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-25 08:49:47,981 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-25 08:49:47,981 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-25 08:49:47,986 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-25 08:49:47,987 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-25 08:49:47,987 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-25 08:49:47,989 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-25 08:49:47,989 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-25 08:49:47,990 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-25 08:49:47,990 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-25 08:49:47,991 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-25 08:49:47,992 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-25 08:49:47,992 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-25 08:49:47,993 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-25 08:49:47,993 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-25 08:49:47,994 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-25 08:49:47,994 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-25 08:49:47,994 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-25 08:49:47,995 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-25 08:49:47,996 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-25 08:49:47,997 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_e873f7c6-81e0-420f-9f9f-04b05de08cbc/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-25 08:49:48,021 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-25 08:49:48,021 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-25 08:49:48,022 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-25 08:49:48,022 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-25 08:49:48,022 INFO L138 SettingsManager]: * Use SBE=true [2019-11-25 08:49:48,022 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-25 08:49:48,023 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-25 08:49:48,023 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-25 08:49:48,023 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-25 08:49:48,023 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-25 08:49:48,023 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-25 08:49:48,023 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-25 08:49:48,024 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-25 08:49:48,024 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-25 08:49:48,024 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-25 08:49:48,024 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-25 08:49:48,024 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-25 08:49:48,025 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-25 08:49:48,025 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-25 08:49:48,025 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-25 08:49:48,025 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-25 08:49:48,025 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-25 08:49:48,025 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-25 08:49:48,026 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-25 08:49:48,026 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-25 08:49:48,026 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-25 08:49:48,026 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-25 08:49:48,026 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-25 08:49:48,027 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_e873f7c6-81e0-420f-9f9f-04b05de08cbc/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 -> e24917ef8695200a643e71e238ee3c2cc9fb2120 [2019-11-25 08:49:48,196 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-25 08:49:48,206 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-25 08:49:48,209 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-25 08:49:48,210 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-25 08:49:48,210 INFO L275 PluginConnector]: CDTParser initialized [2019-11-25 08:49:48,211 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_e873f7c6-81e0-420f-9f9f-04b05de08cbc/bin/uautomizer/../../sv-benchmarks/c/pthread/triangular-longer-1.i [2019-11-25 08:49:48,269 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e873f7c6-81e0-420f-9f9f-04b05de08cbc/bin/uautomizer/data/dfe6f8589/18749e779f624cdfb4aa29df3f045b0f/FLAG8b910bdf9 [2019-11-25 08:49:48,703 INFO L306 CDTParser]: Found 1 translation units. [2019-11-25 08:49:48,703 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_e873f7c6-81e0-420f-9f9f-04b05de08cbc/sv-benchmarks/c/pthread/triangular-longer-1.i [2019-11-25 08:49:48,716 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e873f7c6-81e0-420f-9f9f-04b05de08cbc/bin/uautomizer/data/dfe6f8589/18749e779f624cdfb4aa29df3f045b0f/FLAG8b910bdf9 [2019-11-25 08:49:48,729 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_e873f7c6-81e0-420f-9f9f-04b05de08cbc/bin/uautomizer/data/dfe6f8589/18749e779f624cdfb4aa29df3f045b0f [2019-11-25 08:49:48,731 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-25 08:49:48,733 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-25 08:49:48,733 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-25 08:49:48,734 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-25 08:49:48,737 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-25 08:49:48,738 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:49:48" (1/1) ... [2019-11-25 08:49:48,740 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@626d3804 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:48, skipping insertion in model container [2019-11-25 08:49:48,740 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:49:48" (1/1) ... [2019-11-25 08:49:48,747 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-25 08:49:48,785 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-25 08:49:49,220 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:49:49,230 INFO L201 MainTranslator]: Completed pre-run [2019-11-25 08:49:49,290 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:49:49,358 INFO L205 MainTranslator]: Completed translation [2019-11-25 08:49:49,358 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:49 WrapperNode [2019-11-25 08:49:49,358 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-25 08:49:49,359 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-25 08:49:49,359 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-25 08:49:49,359 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-25 08:49:49,367 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:49" (1/1) ... [2019-11-25 08:49:49,381 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:49" (1/1) ... [2019-11-25 08:49:49,400 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-25 08:49:49,401 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-25 08:49:49,401 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-25 08:49:49,401 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-25 08:49:49,409 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:49" (1/1) ... [2019-11-25 08:49:49,410 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:49" (1/1) ... [2019-11-25 08:49:49,415 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:49" (1/1) ... [2019-11-25 08:49:49,415 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:49" (1/1) ... [2019-11-25 08:49:49,421 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:49" (1/1) ... [2019-11-25 08:49:49,426 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:49" (1/1) ... [2019-11-25 08:49:49,430 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:49" (1/1) ... [2019-11-25 08:49:49,433 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-25 08:49:49,440 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-25 08:49:49,440 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-25 08:49:49,440 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-25 08:49:49,441 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:49" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e873f7c6-81e0-420f-9f9f-04b05de08cbc/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 08:49:49,500 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2019-11-25 08:49:49,501 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2019-11-25 08:49:49,501 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2019-11-25 08:49:49,501 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2019-11-25 08:49:49,502 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-25 08:49:49,503 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-11-25 08:49:49,503 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-25 08:49:49,503 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-25 08:49:49,503 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-11-25 08:49:49,503 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-25 08:49:49,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-25 08:49:49,506 WARN L202 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-11-25 08:49:49,811 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-25 08:49:49,811 INFO L284 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-25 08:49:49,812 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:49:49 BoogieIcfgContainer [2019-11-25 08:49:49,812 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-25 08:49:49,813 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-25 08:49:49,813 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-25 08:49:49,816 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-25 08:49:49,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:49:48" (1/3) ... [2019-11-25 08:49:49,817 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@93a80ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:49:49, skipping insertion in model container [2019-11-25 08:49:49,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:49" (2/3) ... [2019-11-25 08:49:49,818 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@93a80ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:49:49, skipping insertion in model container [2019-11-25 08:49:49,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:49:49" (3/3) ... [2019-11-25 08:49:49,819 INFO L109 eAbstractionObserver]: Analyzing ICFG triangular-longer-1.i [2019-11-25 08:49:49,866 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:49:49,866 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:49:49,867 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:49:49,867 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:49:49,867 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of3ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:49:49,868 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of3ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:49:49,868 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of3ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:49:49,868 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:49:49,869 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:49:49,869 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of3ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:49:49,869 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of3ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:49:49,869 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of3ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:49:49,870 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of3ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:49:49,870 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of3ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:49:49,870 WARN L315 ript$VariableManager]: TermVariabe |t1Thread3of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:49:49,871 WARN L315 ript$VariableManager]: TermVariabe |t1Thread3of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:49:49,871 WARN L315 ript$VariableManager]: TermVariabe t1Thread3of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:49:49,871 WARN L315 ript$VariableManager]: TermVariabe t1Thread3of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:49:49,871 WARN L315 ript$VariableManager]: TermVariabe t1Thread3of3ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:49:49,872 WARN L315 ript$VariableManager]: TermVariabe t1Thread3of3ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:49:49,872 WARN L315 ript$VariableManager]: TermVariabe t1Thread3of3ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:49:49,872 WARN L315 ript$VariableManager]: TermVariabe |t1Thread3of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:49:49,872 WARN L315 ript$VariableManager]: TermVariabe |t1Thread3of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:49:49,873 WARN L315 ript$VariableManager]: TermVariabe t1Thread3of3ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:49:49,873 WARN L315 ript$VariableManager]: TermVariabe |t1Thread3of3ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:49:49,873 WARN L315 ript$VariableManager]: TermVariabe |t1Thread3of3ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:49:49,873 WARN L315 ript$VariableManager]: TermVariabe t1Thread3of3ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:49:49,874 WARN L315 ript$VariableManager]: TermVariabe |t1Thread3of3ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:49:49,874 WARN L315 ript$VariableManager]: TermVariabe |t1Thread2of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:49:49,875 WARN L315 ript$VariableManager]: TermVariabe |t1Thread2of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:49:49,875 WARN L315 ript$VariableManager]: TermVariabe t1Thread2of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:49:49,875 WARN L315 ript$VariableManager]: TermVariabe t1Thread2of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:49:49,875 WARN L315 ript$VariableManager]: TermVariabe t1Thread2of3ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:49:49,875 WARN L315 ript$VariableManager]: TermVariabe t1Thread2of3ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:49:49,876 WARN L315 ript$VariableManager]: TermVariabe t1Thread2of3ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:49:49,876 WARN L315 ript$VariableManager]: TermVariabe |t1Thread2of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:49:49,876 WARN L315 ript$VariableManager]: TermVariabe |t1Thread2of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:49:49,876 WARN L315 ript$VariableManager]: TermVariabe t1Thread2of3ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:49:49,877 WARN L315 ript$VariableManager]: TermVariabe |t1Thread2of3ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:49:49,877 WARN L315 ript$VariableManager]: TermVariabe |t1Thread2of3ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:49:49,877 WARN L315 ript$VariableManager]: TermVariabe t1Thread2of3ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:49:49,878 WARN L315 ript$VariableManager]: TermVariabe |t1Thread2of3ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:49:49,879 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:49:49,879 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:49:49,879 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:49:49,879 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:49:49,880 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of3ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:49:49,881 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of3ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:49:49,881 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of3ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:49:49,881 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:49:49,882 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:49:49,882 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of3ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:49:49,882 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of3ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:49:49,883 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of3ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:49:49,883 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of3ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:49:49,883 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of3ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:49:49,884 WARN L315 ript$VariableManager]: TermVariabe |t2Thread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:49:49,884 WARN L315 ript$VariableManager]: TermVariabe |t2Thread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:49:49,885 WARN L315 ript$VariableManager]: TermVariabe t2Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:49:49,885 WARN L315 ript$VariableManager]: TermVariabe t2Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:49:49,886 WARN L315 ript$VariableManager]: TermVariabe t2Thread2of3ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:49:49,886 WARN L315 ript$VariableManager]: TermVariabe t2Thread2of3ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:49:49,886 WARN L315 ript$VariableManager]: TermVariabe t2Thread2of3ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:49:49,886 WARN L315 ript$VariableManager]: TermVariabe |t2Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:49:49,887 WARN L315 ript$VariableManager]: TermVariabe |t2Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:49:49,888 WARN L315 ript$VariableManager]: TermVariabe t2Thread2of3ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:49:49,888 WARN L315 ript$VariableManager]: TermVariabe |t2Thread2of3ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:49:49,889 WARN L315 ript$VariableManager]: TermVariabe |t2Thread2of3ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:49:49,889 WARN L315 ript$VariableManager]: TermVariabe t2Thread2of3ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:49:49,889 WARN L315 ript$VariableManager]: TermVariabe |t2Thread2of3ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:49:49,890 WARN L315 ript$VariableManager]: TermVariabe |t2Thread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:49:49,890 WARN L315 ript$VariableManager]: TermVariabe |t2Thread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:49:49,890 WARN L315 ript$VariableManager]: TermVariabe t2Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:49:49,891 WARN L315 ript$VariableManager]: TermVariabe t2Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:49:49,891 WARN L315 ript$VariableManager]: TermVariabe t2Thread3of3ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:49:49,891 WARN L315 ript$VariableManager]: TermVariabe t2Thread3of3ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:49:49,892 WARN L315 ript$VariableManager]: TermVariabe t2Thread3of3ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:49:49,892 WARN L315 ript$VariableManager]: TermVariabe |t2Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:49:49,892 WARN L315 ript$VariableManager]: TermVariabe |t2Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:49:49,893 WARN L315 ript$VariableManager]: TermVariabe t2Thread3of3ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:49:49,893 WARN L315 ript$VariableManager]: TermVariabe |t2Thread3of3ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:49:49,893 WARN L315 ript$VariableManager]: TermVariabe |t2Thread3of3ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:49:49,893 WARN L315 ript$VariableManager]: TermVariabe t2Thread3of3ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:49:49,897 WARN L315 ript$VariableManager]: TermVariabe |t2Thread3of3ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:49:49,913 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-11-25 08:49:49,913 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-25 08:49:49,921 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-25 08:49:49,930 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-25 08:49:49,947 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-25 08:49:49,947 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-25 08:49:49,947 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-25 08:49:49,948 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-25 08:49:49,948 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-25 08:49:49,948 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-25 08:49:49,948 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-25 08:49:49,948 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-25 08:49:49,959 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 95 places, 93 transitions [2019-11-25 08:49:50,063 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 1013 states. [2019-11-25 08:49:50,065 INFO L276 IsEmpty]: Start isEmpty. Operand 1013 states. [2019-11-25 08:49:50,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-25 08:49:50,073 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:49:50,074 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] [2019-11-25 08:49:50,075 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:49:50,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:49:50,080 INFO L82 PathProgramCache]: Analyzing trace with hash 1140660711, now seen corresponding path program 1 times [2019-11-25 08:49:50,088 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:49:50,088 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432547444] [2019-11-25 08:49:50,088 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:49:50,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:49:50,382 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 08:49:50,383 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432547444] [2019-11-25 08:49:50,383 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:49:50,384 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-25 08:49:50,384 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068402538] [2019-11-25 08:49:50,388 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-25 08:49:50,389 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:49:50,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-25 08:49:50,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-25 08:49:50,404 INFO L87 Difference]: Start difference. First operand 1013 states. Second operand 5 states. [2019-11-25 08:49:50,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:49:50,590 INFO L93 Difference]: Finished difference Result 1778 states and 5126 transitions. [2019-11-25 08:49:50,591 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-25 08:49:50,592 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2019-11-25 08:49:50,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:49:50,619 INFO L225 Difference]: With dead ends: 1778 [2019-11-25 08:49:50,620 INFO L226 Difference]: Without dead ends: 500 [2019-11-25 08:49:50,621 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-11-25 08:49:50,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2019-11-25 08:49:50,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 388. [2019-11-25 08:49:50,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 388 states. [2019-11-25 08:49:50,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 993 transitions. [2019-11-25 08:49:50,716 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 993 transitions. Word has length 20 [2019-11-25 08:49:50,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:49:50,717 INFO L462 AbstractCegarLoop]: Abstraction has 388 states and 993 transitions. [2019-11-25 08:49:50,717 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-25 08:49:50,717 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 993 transitions. [2019-11-25 08:49:50,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-11-25 08:49:50,719 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:49:50,719 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] [2019-11-25 08:49:50,719 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:49:50,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:49:50,720 INFO L82 PathProgramCache]: Analyzing trace with hash 1489054159, now seen corresponding path program 1 times [2019-11-25 08:49:50,720 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:49:50,720 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382678867] [2019-11-25 08:49:50,721 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:49:50,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:49:50,829 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 08:49:50,830 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382678867] [2019-11-25 08:49:50,830 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:49:50,830 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-25 08:49:50,830 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251614057] [2019-11-25 08:49:50,832 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-25 08:49:50,832 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:49:50,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-25 08:49:50,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-25 08:49:50,832 INFO L87 Difference]: Start difference. First operand 388 states and 993 transitions. Second operand 5 states. [2019-11-25 08:49:50,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:49:50,966 INFO L93 Difference]: Finished difference Result 563 states and 1392 transitions. [2019-11-25 08:49:50,968 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-25 08:49:50,968 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2019-11-25 08:49:50,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:49:50,971 INFO L225 Difference]: With dead ends: 563 [2019-11-25 08:49:50,971 INFO L226 Difference]: Without dead ends: 354 [2019-11-25 08:49:50,972 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-11-25 08:49:50,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2019-11-25 08:49:51,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 354. [2019-11-25 08:49:51,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 354 states. [2019-11-25 08:49:51,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 883 transitions. [2019-11-25 08:49:51,013 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 883 transitions. Word has length 23 [2019-11-25 08:49:51,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:49:51,014 INFO L462 AbstractCegarLoop]: Abstraction has 354 states and 883 transitions. [2019-11-25 08:49:51,014 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-25 08:49:51,014 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 883 transitions. [2019-11-25 08:49:51,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-11-25 08:49:51,020 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:49:51,021 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] [2019-11-25 08:49:51,021 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:49:51,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:49:51,022 INFO L82 PathProgramCache]: Analyzing trace with hash 913376083, now seen corresponding path program 1 times [2019-11-25 08:49:51,022 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:49:51,022 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143953115] [2019-11-25 08:49:51,022 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:49:51,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:49:51,146 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 08:49:51,146 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143953115] [2019-11-25 08:49:51,146 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:49:51,146 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-25 08:49:51,146 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970251477] [2019-11-25 08:49:51,147 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-25 08:49:51,147 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:49:51,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-25 08:49:51,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-25 08:49:51,148 INFO L87 Difference]: Start difference. First operand 354 states and 883 transitions. Second operand 5 states. [2019-11-25 08:49:51,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:49:51,217 INFO L93 Difference]: Finished difference Result 431 states and 1037 transitions. [2019-11-25 08:49:51,218 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-25 08:49:51,218 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2019-11-25 08:49:51,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:49:51,220 INFO L225 Difference]: With dead ends: 431 [2019-11-25 08:49:51,221 INFO L226 Difference]: Without dead ends: 301 [2019-11-25 08:49:51,221 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 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 08:49:51,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2019-11-25 08:49:51,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 288. [2019-11-25 08:49:51,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 288 states. [2019-11-25 08:49:51,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 709 transitions. [2019-11-25 08:49:51,237 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 709 transitions. Word has length 23 [2019-11-25 08:49:51,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:49:51,238 INFO L462 AbstractCegarLoop]: Abstraction has 288 states and 709 transitions. [2019-11-25 08:49:51,238 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-25 08:49:51,238 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 709 transitions. [2019-11-25 08:49:51,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-11-25 08:49:51,241 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:49:51,241 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] [2019-11-25 08:49:51,242 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:49:51,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:49:51,242 INFO L82 PathProgramCache]: Analyzing trace with hash 597396229, now seen corresponding path program 1 times [2019-11-25 08:49:51,242 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:49:51,243 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770008830] [2019-11-25 08:49:51,243 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:49:51,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:49:51,406 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 08:49:51,406 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770008830] [2019-11-25 08:49:51,407 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:49:51,407 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-25 08:49:51,407 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015363060] [2019-11-25 08:49:51,407 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-25 08:49:51,408 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:49:51,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-25 08:49:51,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-25 08:49:51,408 INFO L87 Difference]: Start difference. First operand 288 states and 709 transitions. Second operand 6 states. [2019-11-25 08:49:51,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:49:51,528 INFO L93 Difference]: Finished difference Result 448 states and 1078 transitions. [2019-11-25 08:49:51,529 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-25 08:49:51,529 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2019-11-25 08:49:51,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:49:51,532 INFO L225 Difference]: With dead ends: 448 [2019-11-25 08:49:51,532 INFO L226 Difference]: Without dead ends: 320 [2019-11-25 08:49:51,532 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2019-11-25 08:49:51,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2019-11-25 08:49:51,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 320. [2019-11-25 08:49:51,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 320 states. [2019-11-25 08:49:51,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 773 transitions. [2019-11-25 08:49:51,544 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 773 transitions. Word has length 26 [2019-11-25 08:49:51,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:49:51,545 INFO L462 AbstractCegarLoop]: Abstraction has 320 states and 773 transitions. [2019-11-25 08:49:51,545 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-25 08:49:51,545 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 773 transitions. [2019-11-25 08:49:51,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-11-25 08:49:51,546 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:49:51,547 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:49:51,547 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:49:51,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:49:51,547 INFO L82 PathProgramCache]: Analyzing trace with hash -66636472, now seen corresponding path program 1 times [2019-11-25 08:49:51,548 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:49:51,548 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226595813] [2019-11-25 08:49:51,548 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:49:51,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:49:51,672 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:49:51,672 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226595813] [2019-11-25 08:49:51,672 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1341740865] [2019-11-25 08:49:51,672 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e873f7c6-81e0-420f-9f9f-04b05de08cbc/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:49:51,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:49:51,759 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-25 08:49:51,767 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:49:51,823 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:49:51,827 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:49:51,831 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:49:51,840 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:49:51,840 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:49:51,840 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2019-11-25 08:49:51,841 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554292497] [2019-11-25 08:49:51,842 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-25 08:49:51,842 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:49:51,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-25 08:49:51,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-11-25 08:49:51,843 INFO L87 Difference]: Start difference. First operand 320 states and 773 transitions. Second operand 8 states. [2019-11-25 08:49:52,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:49:52,018 INFO L93 Difference]: Finished difference Result 565 states and 1361 transitions. [2019-11-25 08:49:52,018 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-25 08:49:52,018 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 30 [2019-11-25 08:49:52,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:49:52,021 INFO L225 Difference]: With dead ends: 565 [2019-11-25 08:49:52,021 INFO L226 Difference]: Without dead ends: 376 [2019-11-25 08:49:52,022 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2019-11-25 08:49:52,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2019-11-25 08:49:52,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 364. [2019-11-25 08:49:52,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 364 states. [2019-11-25 08:49:52,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 865 transitions. [2019-11-25 08:49:52,035 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 865 transitions. Word has length 30 [2019-11-25 08:49:52,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:49:52,035 INFO L462 AbstractCegarLoop]: Abstraction has 364 states and 865 transitions. [2019-11-25 08:49:52,035 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-25 08:49:52,035 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 865 transitions. [2019-11-25 08:49:52,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-11-25 08:49:52,037 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:49:52,037 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:49:52,240 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:49:52,240 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:49:52,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:49:52,241 INFO L82 PathProgramCache]: Analyzing trace with hash 1891987234, now seen corresponding path program 1 times [2019-11-25 08:49:52,241 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:49:52,241 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598667687] [2019-11-25 08:49:52,241 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:49:52,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:49:52,365 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:49:52,366 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598667687] [2019-11-25 08:49:52,366 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1625538040] [2019-11-25 08:49:52,366 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e873f7c6-81e0-420f-9f9f-04b05de08cbc/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:49:52,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:49:52,433 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-25 08:49:52,436 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:49:52,455 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:49:52,456 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:49:52,459 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:49:52,460 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:49:52,460 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2019-11-25 08:49:52,460 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103894731] [2019-11-25 08:49:52,460 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-25 08:49:52,460 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:49:52,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-25 08:49:52,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-11-25 08:49:52,461 INFO L87 Difference]: Start difference. First operand 364 states and 865 transitions. Second operand 8 states. [2019-11-25 08:49:52,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:49:52,567 INFO L93 Difference]: Finished difference Result 649 states and 1529 transitions. [2019-11-25 08:49:52,567 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-25 08:49:52,568 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 30 [2019-11-25 08:49:52,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:49:52,571 INFO L225 Difference]: With dead ends: 649 [2019-11-25 08:49:52,571 INFO L226 Difference]: Without dead ends: 460 [2019-11-25 08:49:52,572 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2019-11-25 08:49:52,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2019-11-25 08:49:52,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 392. [2019-11-25 08:49:52,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 392 states. [2019-11-25 08:49:52,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 917 transitions. [2019-11-25 08:49:52,585 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 917 transitions. Word has length 30 [2019-11-25 08:49:52,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:49:52,586 INFO L462 AbstractCegarLoop]: Abstraction has 392 states and 917 transitions. [2019-11-25 08:49:52,586 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-25 08:49:52,586 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 917 transitions. [2019-11-25 08:49:52,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-11-25 08:49:52,587 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:49:52,588 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:49:52,791 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:49:52,791 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:49:52,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:49:52,791 INFO L82 PathProgramCache]: Analyzing trace with hash 1142284712, now seen corresponding path program 1 times [2019-11-25 08:49:52,791 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:49:52,792 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504310275] [2019-11-25 08:49:52,792 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:49:52,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:49:52,906 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-25 08:49:52,906 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504310275] [2019-11-25 08:49:52,907 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [432355835] [2019-11-25 08:49:52,907 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e873f7c6-81e0-420f-9f9f-04b05de08cbc/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:49:52,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:49:52,983 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-25 08:49:52,984 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:49:53,007 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:49:53,008 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:49:53,012 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-25 08:49:53,012 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:49:53,012 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2019-11-25 08:49:53,012 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803778313] [2019-11-25 08:49:53,013 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-25 08:49:53,013 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:49:53,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-25 08:49:53,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2019-11-25 08:49:53,013 INFO L87 Difference]: Start difference. First operand 392 states and 917 transitions. Second operand 9 states. [2019-11-25 08:49:53,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:49:53,148 INFO L93 Difference]: Finished difference Result 677 states and 1585 transitions. [2019-11-25 08:49:53,150 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-25 08:49:53,150 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 38 [2019-11-25 08:49:53,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:49:53,154 INFO L225 Difference]: With dead ends: 677 [2019-11-25 08:49:53,154 INFO L226 Difference]: Without dead ends: 440 [2019-11-25 08:49:53,154 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2019-11-25 08:49:53,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2019-11-25 08:49:53,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 412. [2019-11-25 08:49:53,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 412 states. [2019-11-25 08:49:53,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 961 transitions. [2019-11-25 08:49:53,167 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 961 transitions. Word has length 38 [2019-11-25 08:49:53,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:49:53,167 INFO L462 AbstractCegarLoop]: Abstraction has 412 states and 961 transitions. [2019-11-25 08:49:53,168 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-25 08:49:53,168 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 961 transitions. [2019-11-25 08:49:53,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-11-25 08:49:53,169 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:49:53,169 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:49:53,369 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:49:53,369 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:49:53,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:49:53,370 INFO L82 PathProgramCache]: Analyzing trace with hash -1601775870, now seen corresponding path program 2 times [2019-11-25 08:49:53,370 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:49:53,370 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950484867] [2019-11-25 08:49:53,370 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:49:53,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:49:53,469 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:49:53,469 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950484867] [2019-11-25 08:49:53,470 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1012580551] [2019-11-25 08:49:53,470 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e873f7c6-81e0-420f-9f9f-04b05de08cbc/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:49:53,541 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-25 08:49:53,541 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:49:53,542 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-25 08:49:53,548 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:49:53,574 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:49:53,574 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:49:53,576 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:49:53,579 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:49:53,579 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:49:53,579 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2019-11-25 08:49:53,579 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060164255] [2019-11-25 08:49:53,580 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-25 08:49:53,580 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:49:53,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-25 08:49:53,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-11-25 08:49:53,580 INFO L87 Difference]: Start difference. First operand 412 states and 961 transitions. Second operand 10 states. [2019-11-25 08:49:53,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:49:53,802 INFO L93 Difference]: Finished difference Result 767 states and 1814 transitions. [2019-11-25 08:49:53,803 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-11-25 08:49:53,803 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 38 [2019-11-25 08:49:53,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:49:53,806 INFO L225 Difference]: With dead ends: 767 [2019-11-25 08:49:53,806 INFO L226 Difference]: Without dead ends: 448 [2019-11-25 08:49:53,806 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2019-11-25 08:49:53,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2019-11-25 08:49:53,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 346. [2019-11-25 08:49:53,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 346 states. [2019-11-25 08:49:53,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 825 transitions. [2019-11-25 08:49:53,818 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 825 transitions. Word has length 38 [2019-11-25 08:49:53,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:49:53,819 INFO L462 AbstractCegarLoop]: Abstraction has 346 states and 825 transitions. [2019-11-25 08:49:53,819 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-25 08:49:53,819 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 825 transitions. [2019-11-25 08:49:53,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2019-11-25 08:49:53,820 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:49:53,820 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:49:54,024 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:49:54,032 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:49:54,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:49:54,032 INFO L82 PathProgramCache]: Analyzing trace with hash 2075284677, now seen corresponding path program 3 times [2019-11-25 08:49:54,032 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:49:54,032 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097586722] [2019-11-25 08:49:54,032 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:49:54,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:49:54,158 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:49:54,159 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097586722] [2019-11-25 08:49:54,159 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [575187276] [2019-11-25 08:49:54,159 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e873f7c6-81e0-420f-9f9f-04b05de08cbc/bin/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:49:54,228 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-11-25 08:49:54,229 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:49:54,230 INFO L255 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 13 conjunts are in the unsatisfiable core [2019-11-25 08:49:54,233 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:49:54,258 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:49:54,258 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:49:54,259 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:49:54,262 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:49:54,262 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:49:54,263 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2019-11-25 08:49:54,263 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725442206] [2019-11-25 08:49:54,263 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-25 08:49:54,263 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:49:54,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-25 08:49:54,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2019-11-25 08:49:54,266 INFO L87 Difference]: Start difference. First operand 346 states and 825 transitions. Second operand 11 states. [2019-11-25 08:49:54,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:49:54,481 INFO L93 Difference]: Finished difference Result 693 states and 1617 transitions. [2019-11-25 08:49:54,481 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-11-25 08:49:54,482 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 42 [2019-11-25 08:49:54,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:49:54,485 INFO L225 Difference]: With dead ends: 693 [2019-11-25 08:49:54,485 INFO L226 Difference]: Without dead ends: 504 [2019-11-25 08:49:54,485 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2019-11-25 08:49:54,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2019-11-25 08:49:54,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 476. [2019-11-25 08:49:54,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 476 states. [2019-11-25 08:49:54,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 1089 transitions. [2019-11-25 08:49:54,499 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 1089 transitions. Word has length 42 [2019-11-25 08:49:54,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:49:54,500 INFO L462 AbstractCegarLoop]: Abstraction has 476 states and 1089 transitions. [2019-11-25 08:49:54,500 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-25 08:49:54,500 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 1089 transitions. [2019-11-25 08:49:54,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-11-25 08:49:54,501 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:49:54,501 INFO L410 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:49:54,713 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:49:54,713 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:49:54,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:49:54,713 INFO L82 PathProgramCache]: Analyzing trace with hash -1009623326, now seen corresponding path program 4 times [2019-11-25 08:49:54,713 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:49:54,713 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673888219] [2019-11-25 08:49:54,714 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:49:54,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:49:54,836 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:49:54,837 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673888219] [2019-11-25 08:49:54,837 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [591926493] [2019-11-25 08:49:54,837 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e873f7c6-81e0-420f-9f9f-04b05de08cbc/bin/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:49:54,915 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-25 08:49:54,915 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:49:54,916 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 13 conjunts are in the unsatisfiable core [2019-11-25 08:49:54,918 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:49:54,941 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:49:54,942 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:49:54,945 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:49:54,946 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:49:54,946 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2019-11-25 08:49:54,946 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321738074] [2019-11-25 08:49:54,946 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-25 08:49:54,946 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:49:54,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-25 08:49:54,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2019-11-25 08:49:54,947 INFO L87 Difference]: Start difference. First operand 476 states and 1089 transitions. Second operand 12 states. [2019-11-25 08:49:55,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:49:55,160 INFO L93 Difference]: Finished difference Result 733 states and 1697 transitions. [2019-11-25 08:49:55,161 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-11-25 08:49:55,161 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 46 [2019-11-25 08:49:55,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:49:55,165 INFO L225 Difference]: With dead ends: 733 [2019-11-25 08:49:55,165 INFO L226 Difference]: Without dead ends: 496 [2019-11-25 08:49:55,165 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=109, Invalid=271, Unknown=0, NotChecked=0, Total=380 [2019-11-25 08:49:55,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2019-11-25 08:49:55,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 378. [2019-11-25 08:49:55,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 378 states. [2019-11-25 08:49:55,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 889 transitions. [2019-11-25 08:49:55,178 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 889 transitions. Word has length 46 [2019-11-25 08:49:55,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:49:55,179 INFO L462 AbstractCegarLoop]: Abstraction has 378 states and 889 transitions. [2019-11-25 08:49:55,180 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-25 08:49:55,180 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 889 transitions. [2019-11-25 08:49:55,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2019-11-25 08:49:55,181 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:49:55,181 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 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 08:49:55,392 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:49:55,392 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:49:55,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:49:55,393 INFO L82 PathProgramCache]: Analyzing trace with hash -1638831707, now seen corresponding path program 5 times [2019-11-25 08:49:55,393 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:49:55,393 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024570902] [2019-11-25 08:49:55,393 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:49:55,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:49:55,537 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:49:55,537 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024570902] [2019-11-25 08:49:55,537 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [335746534] [2019-11-25 08:49:55,538 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e873f7c6-81e0-420f-9f9f-04b05de08cbc/bin/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:49:55,610 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2019-11-25 08:49:55,610 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:49:55,611 INFO L255 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 14 conjunts are in the unsatisfiable core [2019-11-25 08:49:55,624 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:49:55,643 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:49:55,644 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:49:55,648 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:49:55,648 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:49:55,648 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2019-11-25 08:49:55,649 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668452825] [2019-11-25 08:49:55,649 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-11-25 08:49:55,649 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:49:55,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-11-25 08:49:55,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2019-11-25 08:49:55,649 INFO L87 Difference]: Start difference. First operand 378 states and 889 transitions. Second operand 13 states. [2019-11-25 08:49:55,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:49:55,898 INFO L93 Difference]: Finished difference Result 757 states and 1745 transitions. [2019-11-25 08:49:55,898 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-11-25 08:49:55,898 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 50 [2019-11-25 08:49:55,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:49:55,902 INFO L225 Difference]: With dead ends: 757 [2019-11-25 08:49:55,902 INFO L226 Difference]: Without dead ends: 568 [2019-11-25 08:49:55,902 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=149, Invalid=357, Unknown=0, NotChecked=0, Total=506 [2019-11-25 08:49:55,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2019-11-25 08:49:55,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 540. [2019-11-25 08:49:55,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 540 states. [2019-11-25 08:49:55,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 1217 transitions. [2019-11-25 08:49:55,917 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 1217 transitions. Word has length 50 [2019-11-25 08:49:55,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:49:55,917 INFO L462 AbstractCegarLoop]: Abstraction has 540 states and 1217 transitions. [2019-11-25 08:49:55,917 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-11-25 08:49:55,917 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 1217 transitions. [2019-11-25 08:49:55,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2019-11-25 08:49:55,918 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:49:55,919 INFO L410 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 3, 3, 3, 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 08:49:56,122 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:49:56,124 INFO L410 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:49:56,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:49:56,124 INFO L82 PathProgramCache]: Analyzing trace with hash 1049102018, now seen corresponding path program 6 times [2019-11-25 08:49:56,124 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:49:56,125 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330542278] [2019-11-25 08:49:56,125 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:49:56,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:49:56,309 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:49:56,310 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330542278] [2019-11-25 08:49:56,310 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [757752416] [2019-11-25 08:49:56,310 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e873f7c6-81e0-420f-9f9f-04b05de08cbc/bin/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:49:56,372 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2019-11-25 08:49:56,372 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:49:56,373 INFO L255 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 16 conjunts are in the unsatisfiable core [2019-11-25 08:49:56,375 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:49:56,402 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:49:56,403 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:49:56,403 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:49:56,407 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:49:56,411 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:49:56,411 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2019-11-25 08:49:56,412 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275444916] [2019-11-25 08:49:56,412 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-25 08:49:56,412 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:49:56,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-25 08:49:56,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2019-11-25 08:49:56,413 INFO L87 Difference]: Start difference. First operand 540 states and 1217 transitions. Second operand 14 states. [2019-11-25 08:49:56,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:49:56,681 INFO L93 Difference]: Finished difference Result 797 states and 1825 transitions. [2019-11-25 08:49:56,682 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-11-25 08:49:56,682 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 54 [2019-11-25 08:49:56,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:49:56,685 INFO L225 Difference]: With dead ends: 797 [2019-11-25 08:49:56,685 INFO L226 Difference]: Without dead ends: 608 [2019-11-25 08:49:56,686 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=165, Invalid=435, Unknown=0, NotChecked=0, Total=600 [2019-11-25 08:49:56,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2019-11-25 08:49:56,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 434. [2019-11-25 08:49:56,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2019-11-25 08:49:56,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 1001 transitions. [2019-11-25 08:49:56,702 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 1001 transitions. Word has length 54 [2019-11-25 08:49:56,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:49:56,703 INFO L462 AbstractCegarLoop]: Abstraction has 434 states and 1001 transitions. [2019-11-25 08:49:56,703 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-11-25 08:49:56,703 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 1001 transitions. [2019-11-25 08:49:56,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2019-11-25 08:49:56,704 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:49:56,704 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 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 08:49:56,907 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:49:56,907 INFO L410 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:49:56,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:49:56,908 INFO L82 PathProgramCache]: Analyzing trace with hash -964845947, now seen corresponding path program 7 times [2019-11-25 08:49:56,908 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:49:56,908 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523323782] [2019-11-25 08:49:56,908 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:49:56,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:49:57,098 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:49:57,099 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523323782] [2019-11-25 08:49:57,099 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [322224943] [2019-11-25 08:49:57,099 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e873f7c6-81e0-420f-9f9f-04b05de08cbc/bin/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:49:57,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:49:57,149 INFO L255 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 16 conjunts are in the unsatisfiable core [2019-11-25 08:49:57,151 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:49:57,185 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:49:57,186 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:49:57,191 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:49:57,191 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:49:57,192 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2019-11-25 08:49:57,192 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745880441] [2019-11-25 08:49:57,192 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-11-25 08:49:57,192 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:49:57,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-11-25 08:49:57,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2019-11-25 08:49:57,193 INFO L87 Difference]: Start difference. First operand 434 states and 1001 transitions. Second operand 15 states. [2019-11-25 08:49:57,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:49:57,508 INFO L93 Difference]: Finished difference Result 967 states and 2214 transitions. [2019-11-25 08:49:57,509 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-11-25 08:49:57,509 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 58 [2019-11-25 08:49:57,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:49:57,513 INFO L225 Difference]: With dead ends: 967 [2019-11-25 08:49:57,513 INFO L226 Difference]: Without dead ends: 672 [2019-11-25 08:49:57,513 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=217, Invalid=539, Unknown=0, NotChecked=0, Total=756 [2019-11-25 08:49:57,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2019-11-25 08:49:57,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 453. [2019-11-25 08:49:57,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 453 states. [2019-11-25 08:49:57,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 1039 transitions. [2019-11-25 08:49:57,529 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 1039 transitions. Word has length 58 [2019-11-25 08:49:57,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:49:57,529 INFO L462 AbstractCegarLoop]: Abstraction has 453 states and 1039 transitions. [2019-11-25 08:49:57,529 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-11-25 08:49:57,530 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 1039 transitions. [2019-11-25 08:49:57,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2019-11-25 08:49:57,530 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:49:57,531 INFO L410 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 4, 4, 4, 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 08:49:57,737 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:49:57,737 INFO L410 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:49:57,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:49:57,737 INFO L82 PathProgramCache]: Analyzing trace with hash -1803039070, now seen corresponding path program 8 times [2019-11-25 08:49:57,737 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:49:57,738 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380570601] [2019-11-25 08:49:57,738 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:49:57,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:49:57,902 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:49:57,903 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380570601] [2019-11-25 08:49:57,903 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [844016007] [2019-11-25 08:49:57,903 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e873f7c6-81e0-420f-9f9f-04b05de08cbc/bin/uautomizer/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:49:57,972 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-25 08:49:57,972 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:49:57,973 INFO L255 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 18 conjunts are in the unsatisfiable core [2019-11-25 08:49:57,975 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:49:57,998 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:49:57,999 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:49:57,999 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:49:58,005 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:49:58,006 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:49:58,006 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2019-11-25 08:49:58,007 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690210426] [2019-11-25 08:49:58,008 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-11-25 08:49:58,008 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:49:58,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-11-25 08:49:58,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2019-11-25 08:49:58,009 INFO L87 Difference]: Start difference. First operand 453 states and 1039 transitions. Second operand 16 states. [2019-11-25 08:49:58,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:49:58,326 INFO L93 Difference]: Finished difference Result 983 states and 2246 transitions. [2019-11-25 08:49:58,327 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-11-25 08:49:58,327 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 62 [2019-11-25 08:49:58,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:49:58,331 INFO L225 Difference]: With dead ends: 983 [2019-11-25 08:49:58,331 INFO L226 Difference]: Without dead ends: 688 [2019-11-25 08:49:58,332 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=230, Invalid=640, Unknown=0, NotChecked=0, Total=870 [2019-11-25 08:49:58,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688 states. [2019-11-25 08:49:58,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688 to 466. [2019-11-25 08:49:58,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 466 states. [2019-11-25 08:49:58,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 1065 transitions. [2019-11-25 08:49:58,344 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 1065 transitions. Word has length 62 [2019-11-25 08:49:58,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:49:58,345 INFO L462 AbstractCegarLoop]: Abstraction has 466 states and 1065 transitions. [2019-11-25 08:49:58,345 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-11-25 08:49:58,345 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 1065 transitions. [2019-11-25 08:49:58,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2019-11-25 08:49:58,346 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:49:58,346 INFO L410 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 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 08:49:58,549 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:49:58,552 INFO L410 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:49:58,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:49:58,552 INFO L82 PathProgramCache]: Analyzing trace with hash -1525222555, now seen corresponding path program 9 times [2019-11-25 08:49:58,552 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:49:58,553 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259168576] [2019-11-25 08:49:58,553 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:49:58,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:49:58,730 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:49:58,731 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259168576] [2019-11-25 08:49:58,731 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2144064467] [2019-11-25 08:49:58,731 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e873f7c6-81e0-420f-9f9f-04b05de08cbc/bin/uautomizer/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:49:58,810 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2019-11-25 08:49:58,811 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:49:58,812 INFO L255 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 18 conjunts are in the unsatisfiable core [2019-11-25 08:49:58,813 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:49:58,846 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:49:58,847 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:49:58,852 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:49:58,853 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:49:58,853 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2019-11-25 08:49:58,853 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189175672] [2019-11-25 08:49:58,854 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-11-25 08:49:58,854 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:49:58,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-11-25 08:49:58,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2019-11-25 08:49:58,854 INFO L87 Difference]: Start difference. First operand 466 states and 1065 transitions. Second operand 17 states. [2019-11-25 08:49:59,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:49:59,240 INFO L93 Difference]: Finished difference Result 1031 states and 2342 transitions. [2019-11-25 08:49:59,241 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-11-25 08:49:59,241 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 66 [2019-11-25 08:49:59,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:49:59,245 INFO L225 Difference]: With dead ends: 1031 [2019-11-25 08:49:59,245 INFO L226 Difference]: Without dead ends: 736 [2019-11-25 08:49:59,246 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=285, Invalid=707, Unknown=0, NotChecked=0, Total=992 [2019-11-25 08:49:59,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2019-11-25 08:49:59,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 485. [2019-11-25 08:49:59,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 485 states. [2019-11-25 08:49:59,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 1103 transitions. [2019-11-25 08:49:59,259 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 1103 transitions. Word has length 66 [2019-11-25 08:49:59,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:49:59,260 INFO L462 AbstractCegarLoop]: Abstraction has 485 states and 1103 transitions. [2019-11-25 08:49:59,260 INFO L463 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-11-25 08:49:59,260 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 1103 transitions. [2019-11-25 08:49:59,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-11-25 08:49:59,261 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:49:59,261 INFO L410 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 5, 5, 5, 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 08:49:59,461 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:49:59,461 INFO L410 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:49:59,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:49:59,462 INFO L82 PathProgramCache]: Analyzing trace with hash 1773254274, now seen corresponding path program 10 times [2019-11-25 08:49:59,462 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:49:59,462 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977642713] [2019-11-25 08:49:59,462 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:49:59,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:49:59,658 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:49:59,659 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977642713] [2019-11-25 08:49:59,659 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [136733456] [2019-11-25 08:49:59,659 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e873f7c6-81e0-420f-9f9f-04b05de08cbc/bin/uautomizer/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:49:59,732 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-25 08:49:59,733 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:49:59,733 INFO L255 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 19 conjunts are in the unsatisfiable core [2019-11-25 08:49:59,735 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:49:59,761 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:49:59,761 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:49:59,767 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:49:59,768 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:49:59,769 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2019-11-25 08:49:59,769 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869253248] [2019-11-25 08:49:59,769 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-11-25 08:49:59,770 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:49:59,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-11-25 08:49:59,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2019-11-25 08:49:59,770 INFO L87 Difference]: Start difference. First operand 485 states and 1103 transitions. Second operand 18 states. [2019-11-25 08:50:00,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:50:00,188 INFO L93 Difference]: Finished difference Result 1047 states and 2374 transitions. [2019-11-25 08:50:00,188 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-11-25 08:50:00,188 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 70 [2019-11-25 08:50:00,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:50:00,192 INFO L225 Difference]: With dead ends: 1047 [2019-11-25 08:50:00,193 INFO L226 Difference]: Without dead ends: 752 [2019-11-25 08:50:00,193 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=296, Invalid=760, Unknown=0, NotChecked=0, Total=1056 [2019-11-25 08:50:00,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 752 states. [2019-11-25 08:50:00,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 752 to 498. [2019-11-25 08:50:00,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 498 states. [2019-11-25 08:50:00,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 1129 transitions. [2019-11-25 08:50:00,205 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 1129 transitions. Word has length 70 [2019-11-25 08:50:00,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:50:00,205 INFO L462 AbstractCegarLoop]: Abstraction has 498 states and 1129 transitions. [2019-11-25 08:50:00,205 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-11-25 08:50:00,205 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 1129 transitions. [2019-11-25 08:50:00,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2019-11-25 08:50:00,206 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:50:00,207 INFO L410 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 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 08:50:00,416 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:50:00,416 INFO L410 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:50:00,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:50:00,416 INFO L82 PathProgramCache]: Analyzing trace with hash 184379461, now seen corresponding path program 11 times [2019-11-25 08:50:00,417 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:50:00,417 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440641718] [2019-11-25 08:50:00,417 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:50:00,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:50:00,638 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:50:00,638 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440641718] [2019-11-25 08:50:00,638 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [760440723] [2019-11-25 08:50:00,638 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e873f7c6-81e0-420f-9f9f-04b05de08cbc/bin/uautomizer/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:50:00,710 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2019-11-25 08:50:00,710 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:50:00,711 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 20 conjunts are in the unsatisfiable core [2019-11-25 08:50:00,713 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:50:00,741 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:50:00,741 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:50:00,748 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:50:00,748 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:50:00,749 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2019-11-25 08:50:00,749 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941176259] [2019-11-25 08:50:00,749 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-11-25 08:50:00,749 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:50:00,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-11-25 08:50:00,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2019-11-25 08:50:00,750 INFO L87 Difference]: Start difference. First operand 498 states and 1129 transitions. Second operand 19 states. [2019-11-25 08:50:01,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:50:01,189 INFO L93 Difference]: Finished difference Result 1079 states and 2438 transitions. [2019-11-25 08:50:01,189 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2019-11-25 08:50:01,189 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 74 [2019-11-25 08:50:01,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:50:01,193 INFO L225 Difference]: With dead ends: 1079 [2019-11-25 08:50:01,193 INFO L226 Difference]: Without dead ends: 760 [2019-11-25 08:50:01,194 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=363, Invalid=897, Unknown=0, NotChecked=0, Total=1260 [2019-11-25 08:50:01,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2019-11-25 08:50:01,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 732. [2019-11-25 08:50:01,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 732 states. [2019-11-25 08:50:01,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 732 states to 732 states and 1601 transitions. [2019-11-25 08:50:01,214 INFO L78 Accepts]: Start accepts. Automaton has 732 states and 1601 transitions. Word has length 74 [2019-11-25 08:50:01,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:50:01,214 INFO L462 AbstractCegarLoop]: Abstraction has 732 states and 1601 transitions. [2019-11-25 08:50:01,214 INFO L463 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-11-25 08:50:01,215 INFO L276 IsEmpty]: Start isEmpty. Operand 732 states and 1601 transitions. [2019-11-25 08:50:01,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2019-11-25 08:50:01,216 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:50:01,217 INFO L410 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 6, 6, 6, 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 08:50:01,419 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:50:01,420 INFO L410 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:50:01,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:50:01,420 INFO L82 PathProgramCache]: Analyzing trace with hash -2115649950, now seen corresponding path program 12 times [2019-11-25 08:50:01,420 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:50:01,420 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173205110] [2019-11-25 08:50:01,420 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:50:01,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:50:01,698 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 0 proven. 157 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:50:01,698 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173205110] [2019-11-25 08:50:01,699 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [225142410] [2019-11-25 08:50:01,699 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e873f7c6-81e0-420f-9f9f-04b05de08cbc/bin/uautomizer/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:50:01,775 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2019-11-25 08:50:01,775 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:50:01,776 INFO L255 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 22 conjunts are in the unsatisfiable core [2019-11-25 08:50:01,778 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:50:01,810 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:50:01,810 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:50:01,811 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:50:01,820 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 0 proven. 157 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:50:01,820 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:50:01,820 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2019-11-25 08:50:01,823 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328758366] [2019-11-25 08:50:01,824 INFO L442 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-11-25 08:50:01,824 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:50:01,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-11-25 08:50:01,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2019-11-25 08:50:01,825 INFO L87 Difference]: Start difference. First operand 732 states and 1601 transitions. Second operand 20 states. [2019-11-25 08:50:02,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:50:02,214 INFO L93 Difference]: Finished difference Result 1115 states and 2510 transitions. [2019-11-25 08:50:02,215 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-11-25 08:50:02,215 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 78 [2019-11-25 08:50:02,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:50:02,219 INFO L225 Difference]: With dead ends: 1115 [2019-11-25 08:50:02,219 INFO L226 Difference]: Without dead ends: 820 [2019-11-25 08:50:02,220 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=371, Invalid=1035, Unknown=0, NotChecked=0, Total=1406 [2019-11-25 08:50:02,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 820 states. [2019-11-25 08:50:02,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 820 to 764. [2019-11-25 08:50:02,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 764 states. [2019-11-25 08:50:02,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 764 states to 764 states and 1665 transitions. [2019-11-25 08:50:02,236 INFO L78 Accepts]: Start accepts. Automaton has 764 states and 1665 transitions. Word has length 78 [2019-11-25 08:50:02,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:50:02,237 INFO L462 AbstractCegarLoop]: Abstraction has 764 states and 1665 transitions. [2019-11-25 08:50:02,237 INFO L463 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-11-25 08:50:02,237 INFO L276 IsEmpty]: Start isEmpty. Operand 764 states and 1665 transitions. [2019-11-25 08:50:02,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2019-11-25 08:50:02,239 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:50:02,239 INFO L410 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 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 08:50:02,442 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:50:02,442 INFO L410 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:50:02,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:50:02,443 INFO L82 PathProgramCache]: Analyzing trace with hash -384762587, now seen corresponding path program 13 times [2019-11-25 08:50:02,443 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:50:02,443 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319582152] [2019-11-25 08:50:02,443 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:50:02,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:50:02,674 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:50:02,675 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319582152] [2019-11-25 08:50:02,675 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1829909057] [2019-11-25 08:50:02,675 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e873f7c6-81e0-420f-9f9f-04b05de08cbc/bin/uautomizer/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:50:02,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:50:02,740 INFO L255 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 22 conjunts are in the unsatisfiable core [2019-11-25 08:50:02,742 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:50:02,779 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:50:02,780 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:50:02,787 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:50:02,788 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:50:02,788 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2019-11-25 08:50:02,788 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713273287] [2019-11-25 08:50:02,788 INFO L442 AbstractCegarLoop]: Interpolant automaton has 21 states [2019-11-25 08:50:02,788 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:50:02,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2019-11-25 08:50:02,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=323, Unknown=0, NotChecked=0, Total=420 [2019-11-25 08:50:02,789 INFO L87 Difference]: Start difference. First operand 764 states and 1665 transitions. Second operand 21 states. [2019-11-25 08:50:03,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:50:03,134 INFO L93 Difference]: Finished difference Result 1037 states and 2305 transitions. [2019-11-25 08:50:03,134 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-11-25 08:50:03,134 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 82 [2019-11-25 08:50:03,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:50:03,138 INFO L225 Difference]: With dead ends: 1037 [2019-11-25 08:50:03,138 INFO L226 Difference]: Without dead ends: 848 [2019-11-25 08:50:03,139 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=441, Invalid=1041, Unknown=0, NotChecked=0, Total=1482 [2019-11-25 08:50:03,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 848 states. [2019-11-25 08:50:03,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 848 to 549. [2019-11-25 08:50:03,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 549 states. [2019-11-25 08:50:03,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 1231 transitions. [2019-11-25 08:50:03,153 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 1231 transitions. Word has length 82 [2019-11-25 08:50:03,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:50:03,153 INFO L462 AbstractCegarLoop]: Abstraction has 549 states and 1231 transitions. [2019-11-25 08:50:03,153 INFO L463 AbstractCegarLoop]: Interpolant automaton has 21 states. [2019-11-25 08:50:03,153 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 1231 transitions. [2019-11-25 08:50:03,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2019-11-25 08:50:03,154 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:50:03,155 INFO L410 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 7, 7, 7, 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 08:50:03,358 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:50:03,358 INFO L410 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:50:03,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:50:03,358 INFO L82 PathProgramCache]: Analyzing trace with hash -1056709054, now seen corresponding path program 14 times [2019-11-25 08:50:03,358 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:50:03,358 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322948934] [2019-11-25 08:50:03,359 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:50:03,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:50:03,639 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 0 proven. 211 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:50:03,640 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322948934] [2019-11-25 08:50:03,640 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1847991948] [2019-11-25 08:50:03,640 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e873f7c6-81e0-420f-9f9f-04b05de08cbc/bin/uautomizer/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:50:03,698 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-25 08:50:03,698 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:50:03,699 INFO L255 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 24 conjunts are in the unsatisfiable core [2019-11-25 08:50:03,701 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:50:03,735 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:50:03,735 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:50:03,736 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:50:03,744 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 0 proven. 211 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:50:03,744 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:50:03,744 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2019-11-25 08:50:03,745 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929986835] [2019-11-25 08:50:03,745 INFO L442 AbstractCegarLoop]: Interpolant automaton has 22 states [2019-11-25 08:50:03,745 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:50:03,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2019-11-25 08:50:03,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=355, Unknown=0, NotChecked=0, Total=462 [2019-11-25 08:50:03,746 INFO L87 Difference]: Start difference. First operand 549 states and 1231 transitions. Second operand 22 states. [2019-11-25 08:50:04,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:50:04,236 INFO L93 Difference]: Finished difference Result 1175 states and 2630 transitions. [2019-11-25 08:50:04,236 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-11-25 08:50:04,237 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 86 [2019-11-25 08:50:04,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:50:04,242 INFO L225 Difference]: With dead ends: 1175 [2019-11-25 08:50:04,242 INFO L226 Difference]: Without dead ends: 880 [2019-11-25 08:50:04,243 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=455, Invalid=1267, Unknown=0, NotChecked=0, Total=1722 [2019-11-25 08:50:04,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 880 states. [2019-11-25 08:50:04,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 880 to 562. [2019-11-25 08:50:04,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 562 states. [2019-11-25 08:50:04,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 1257 transitions. [2019-11-25 08:50:04,256 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 1257 transitions. Word has length 86 [2019-11-25 08:50:04,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:50:04,256 INFO L462 AbstractCegarLoop]: Abstraction has 562 states and 1257 transitions. [2019-11-25 08:50:04,256 INFO L463 AbstractCegarLoop]: Interpolant automaton has 22 states. [2019-11-25 08:50:04,256 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 1257 transitions. [2019-11-25 08:50:04,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2019-11-25 08:50:04,260 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:50:04,260 INFO L410 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 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 08:50:04,472 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:50:04,472 INFO L410 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:50:04,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:50:04,472 INFO L82 PathProgramCache]: Analyzing trace with hash 1345434117, now seen corresponding path program 15 times [2019-11-25 08:50:04,472 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:50:04,472 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255281418] [2019-11-25 08:50:04,472 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:50:04,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:50:04,755 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:50:04,755 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255281418] [2019-11-25 08:50:04,755 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1346663951] [2019-11-25 08:50:04,755 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e873f7c6-81e0-420f-9f9f-04b05de08cbc/bin/uautomizer/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:50:04,818 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2019-11-25 08:50:04,818 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:50:04,819 INFO L255 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 25 conjunts are in the unsatisfiable core [2019-11-25 08:50:04,821 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:50:04,855 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:50:04,856 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:50:04,856 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:50:04,866 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:50:04,866 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:50:04,866 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2019-11-25 08:50:04,866 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740226823] [2019-11-25 08:50:04,867 INFO L442 AbstractCegarLoop]: Interpolant automaton has 23 states [2019-11-25 08:50:04,868 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:50:04,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2019-11-25 08:50:04,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=389, Unknown=0, NotChecked=0, Total=506 [2019-11-25 08:50:04,868 INFO L87 Difference]: Start difference. First operand 562 states and 1257 transitions. Second operand 23 states. [2019-11-25 08:50:05,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:50:05,324 INFO L93 Difference]: Finished difference Result 1207 states and 2694 transitions. [2019-11-25 08:50:05,325 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2019-11-25 08:50:05,325 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 90 [2019-11-25 08:50:05,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:50:05,329 INFO L225 Difference]: With dead ends: 1207 [2019-11-25 08:50:05,329 INFO L226 Difference]: Without dead ends: 888 [2019-11-25 08:50:05,330 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=494, Invalid=1398, Unknown=0, NotChecked=0, Total=1892 [2019-11-25 08:50:05,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 888 states. [2019-11-25 08:50:05,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 888 to 860. [2019-11-25 08:50:05,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 860 states. [2019-11-25 08:50:05,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 860 states to 860 states and 1857 transitions. [2019-11-25 08:50:05,346 INFO L78 Accepts]: Start accepts. Automaton has 860 states and 1857 transitions. Word has length 90 [2019-11-25 08:50:05,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:50:05,346 INFO L462 AbstractCegarLoop]: Abstraction has 860 states and 1857 transitions. [2019-11-25 08:50:05,346 INFO L463 AbstractCegarLoop]: Interpolant automaton has 23 states. [2019-11-25 08:50:05,347 INFO L276 IsEmpty]: Start isEmpty. Operand 860 states and 1857 transitions. [2019-11-25 08:50:05,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2019-11-25 08:50:05,348 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:50:05,349 INFO L410 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 8, 8, 8, 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 08:50:05,552 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:50:05,552 INFO L410 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:50:05,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:50:05,552 INFO L82 PathProgramCache]: Analyzing trace with hash 720121378, now seen corresponding path program 16 times [2019-11-25 08:50:05,552 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:50:05,552 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512680200] [2019-11-25 08:50:05,553 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:50:05,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:50:05,826 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 0 proven. 273 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:50:05,826 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512680200] [2019-11-25 08:50:05,826 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2043139570] [2019-11-25 08:50:05,826 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e873f7c6-81e0-420f-9f9f-04b05de08cbc/bin/uautomizer/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:50:05,910 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-25 08:50:05,910 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:50:05,911 INFO L255 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 25 conjunts are in the unsatisfiable core [2019-11-25 08:50:05,912 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:50:05,944 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:50:05,945 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:50:05,955 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 0 proven. 273 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:50:05,956 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:50:05,956 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2019-11-25 08:50:05,956 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368174577] [2019-11-25 08:50:05,956 INFO L442 AbstractCegarLoop]: Interpolant automaton has 24 states [2019-11-25 08:50:05,957 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:50:05,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2019-11-25 08:50:05,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=424, Unknown=0, NotChecked=0, Total=552 [2019-11-25 08:50:05,957 INFO L87 Difference]: Start difference. First operand 860 states and 1857 transitions. Second operand 24 states. [2019-11-25 08:50:06,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:50:06,451 INFO L93 Difference]: Finished difference Result 1215 states and 2710 transitions. [2019-11-25 08:50:06,451 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2019-11-25 08:50:06,451 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 94 [2019-11-25 08:50:06,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:50:06,455 INFO L225 Difference]: With dead ends: 1215 [2019-11-25 08:50:06,455 INFO L226 Difference]: Without dead ends: 896 [2019-11-25 08:50:06,456 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=563, Invalid=1417, Unknown=0, NotChecked=0, Total=1980 [2019-11-25 08:50:06,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 896 states. [2019-11-25 08:50:06,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 896 to 570. [2019-11-25 08:50:06,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 570 states. [2019-11-25 08:50:06,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 1273 transitions. [2019-11-25 08:50:06,468 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 1273 transitions. Word has length 94 [2019-11-25 08:50:06,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:50:06,469 INFO L462 AbstractCegarLoop]: Abstraction has 570 states and 1273 transitions. [2019-11-25 08:50:06,469 INFO L463 AbstractCegarLoop]: Interpolant automaton has 24 states. [2019-11-25 08:50:06,469 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 1273 transitions. [2019-11-25 08:50:06,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-11-25 08:50:06,470 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:50:06,471 INFO L410 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 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 08:50:06,673 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:50:06,674 INFO L410 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:50:06,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:50:06,674 INFO L82 PathProgramCache]: Analyzing trace with hash 1899988709, now seen corresponding path program 17 times [2019-11-25 08:50:06,674 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:50:06,674 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864693887] [2019-11-25 08:50:06,674 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:50:06,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:50:06,972 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:50:06,972 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864693887] [2019-11-25 08:50:06,973 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [62650127] [2019-11-25 08:50:06,973 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e873f7c6-81e0-420f-9f9f-04b05de08cbc/bin/uautomizer/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:50:07,046 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2019-11-25 08:50:07,046 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:50:07,047 INFO L255 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 26 conjunts are in the unsatisfiable core [2019-11-25 08:50:07,048 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:50:07,069 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:50:07,069 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:50:07,078 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:50:07,078 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:50:07,078 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2019-11-25 08:50:07,078 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306561900] [2019-11-25 08:50:07,079 INFO L442 AbstractCegarLoop]: Interpolant automaton has 25 states [2019-11-25 08:50:07,079 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:50:07,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2019-11-25 08:50:07,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=461, Unknown=0, NotChecked=0, Total=600 [2019-11-25 08:50:07,080 INFO L87 Difference]: Start difference. First operand 570 states and 1273 transitions. Second operand 25 states. [2019-11-25 08:50:07,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:50:07,552 INFO L93 Difference]: Finished difference Result 1125 states and 2481 transitions. [2019-11-25 08:50:07,552 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2019-11-25 08:50:07,552 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 98 [2019-11-25 08:50:07,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:50:07,556 INFO L225 Difference]: With dead ends: 1125 [2019-11-25 08:50:07,556 INFO L226 Difference]: Without dead ends: 912 [2019-11-25 08:50:07,557 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 409 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=647, Invalid=1515, Unknown=0, NotChecked=0, Total=2162 [2019-11-25 08:50:07,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 912 states. [2019-11-25 08:50:07,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 912 to 589. [2019-11-25 08:50:07,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 589 states. [2019-11-25 08:50:07,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 1311 transitions. [2019-11-25 08:50:07,569 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 1311 transitions. Word has length 98 [2019-11-25 08:50:07,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:50:07,569 INFO L462 AbstractCegarLoop]: Abstraction has 589 states and 1311 transitions. [2019-11-25 08:50:07,570 INFO L463 AbstractCegarLoop]: Interpolant automaton has 25 states. [2019-11-25 08:50:07,570 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 1311 transitions. [2019-11-25 08:50:07,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2019-11-25 08:50:07,571 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:50:07,571 INFO L410 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 9, 9, 9, 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 08:50:07,774 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:50:07,774 INFO L410 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:50:07,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:50:07,775 INFO L82 PathProgramCache]: Analyzing trace with hash -478243326, now seen corresponding path program 18 times [2019-11-25 08:50:07,775 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:50:07,775 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054097939] [2019-11-25 08:50:07,775 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:50:07,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:50:08,073 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 315 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:50:08,074 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054097939] [2019-11-25 08:50:08,074 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1110354626] [2019-11-25 08:50:08,074 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e873f7c6-81e0-420f-9f9f-04b05de08cbc/bin/uautomizer/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:50:08,211 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2019-11-25 08:50:08,211 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:50:08,212 INFO L255 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 22 conjunts are in the unsatisfiable core [2019-11-25 08:50:08,214 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:50:08,259 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 343 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:50:08,259 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-25 08:50:08,260 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [23] total 25 [2019-11-25 08:50:08,262 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914693384] [2019-11-25 08:50:08,262 INFO L442 AbstractCegarLoop]: Interpolant automaton has 23 states [2019-11-25 08:50:08,262 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:50:08,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2019-11-25 08:50:08,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=451, Unknown=0, NotChecked=0, Total=600 [2019-11-25 08:50:08,263 INFO L87 Difference]: Start difference. First operand 589 states and 1311 transitions. Second operand 23 states. [2019-11-25 08:50:08,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:50:08,634 INFO L93 Difference]: Finished difference Result 2013 states and 3924 transitions. [2019-11-25 08:50:08,634 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2019-11-25 08:50:08,634 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 102 [2019-11-25 08:50:08,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:50:08,634 INFO L225 Difference]: With dead ends: 2013 [2019-11-25 08:50:08,635 INFO L226 Difference]: Without dead ends: 0 [2019-11-25 08:50:08,635 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=609, Invalid=1371, Unknown=0, NotChecked=0, Total=1980 [2019-11-25 08:50:08,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-25 08:50:08,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-25 08:50:08,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-25 08:50:08,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-25 08:50:08,636 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 102 [2019-11-25 08:50:08,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:50:08,636 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-25 08:50:08,636 INFO L463 AbstractCegarLoop]: Interpolant automaton has 23 states. [2019-11-25 08:50:08,636 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-25 08:50:08,636 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-25 08:50:08,836 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:50:08,838 INFO L304 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2019-11-25 08:50:08,840 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 08:50:08 BasicIcfg [2019-11-25 08:50:08,840 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-25 08:50:08,840 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-25 08:50:08,841 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-25 08:50:08,841 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-25 08:50:08,841 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:49:49" (3/4) ... [2019-11-25 08:50:08,844 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-25 08:50:08,850 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure t1 [2019-11-25 08:50:08,851 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure t2 [2019-11-25 08:50:08,854 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2019-11-25 08:50:08,855 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-25 08:50:08,855 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-25 08:50:08,886 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_e873f7c6-81e0-420f-9f9f-04b05de08cbc/bin/uautomizer/witness.graphml [2019-11-25 08:50:08,886 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-25 08:50:08,888 INFO L168 Benchmark]: Toolchain (without parser) took 20155.42 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 330.3 MB). Free memory was 944.7 MB in the beginning and 1.2 GB in the end (delta: -261.4 MB). Peak memory consumption was 68.9 MB. Max. memory is 11.5 GB. [2019-11-25 08:50:08,888 INFO L168 Benchmark]: CDTParser took 0.22 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 08:50:08,889 INFO L168 Benchmark]: CACSL2BoogieTranslator took 625.29 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.6 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -169.6 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. [2019-11-25 08:50:08,889 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.47 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-25 08:50:08,889 INFO L168 Benchmark]: Boogie Preprocessor took 32.09 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:50:08,890 INFO L168 Benchmark]: RCFGBuilder took 372.61 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. [2019-11-25 08:50:08,890 INFO L168 Benchmark]: TraceAbstraction took 19027.06 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 187.7 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -122.9 MB). Peak memory consumption was 64.8 MB. Max. memory is 11.5 GB. [2019-11-25 08:50:08,891 INFO L168 Benchmark]: Witness Printer took 46.14 ms. Allocated memory is still 1.4 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. [2019-11-25 08:50:08,892 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 625.29 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.6 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -169.6 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 41.47 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 32.09 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 372.61 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 19027.06 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 187.7 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -122.9 MB). Peak memory consumption was 64.8 MB. Max. memory is 11.5 GB. * Witness Printer took 46.14 ms. Allocated memory is still 1.4 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 703]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 101 locations, 1 error locations. Result: SAFE, OverallTime: 18.8s, OverallIterations: 24, TraceHistogramMax: 11, AutomataDifference: 7.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 1599 SDtfs, 6744 SDslu, 10120 SDs, 0 SdLazy, 2049 SolverSat, 922 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1883 GetRequests, 1295 SyntacticMatches, 0 SemanticMatches, 588 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3388 ImplicationChecksByTransitivity, 7.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1013occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 24 MinimizatonAttempts, 3007 StatesRemovedByMinimization, 21 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 4.7s InterpolantComputationTime, 2668 NumberOfCodeBlocks, 2668 NumberOfCodeBlocksAsserted, 104 NumberOfCheckSat, 2624 ConstructedInterpolants, 0 QuantifiedInterpolants, 542692 SizeOfPredicates, 288 NumberOfNonLiveVariables, 3156 ConjunctsInSsa, 353 ConjunctsInUnsatCore, 44 InterpolantComputations, 5 PerfectInterpolantSequences, 660/4592 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 correct! Received shutdown request...