./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread/stack_longer-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_8bdb0122-4966-485c-939a-fd69b106b96e/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_8bdb0122-4966-485c-939a-fd69b106b96e/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_8bdb0122-4966-485c-939a-fd69b106b96e/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_8bdb0122-4966-485c-939a-fd69b106b96e/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/stack_longer-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_8bdb0122-4966-485c-939a-fd69b106b96e/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_8bdb0122-4966-485c-939a-fd69b106b96e/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 67a25c9874f6ddc470df7d78fecd876e6bc6fb23 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_8bdb0122-4966-485c-939a-fd69b106b96e/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_8bdb0122-4966-485c-939a-fd69b106b96e/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_8bdb0122-4966-485c-939a-fd69b106b96e/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_8bdb0122-4966-485c-939a-fd69b106b96e/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/stack_longer-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_8bdb0122-4966-485c-939a-fd69b106b96e/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_8bdb0122-4966-485c-939a-fd69b106b96e/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 67a25c9874f6ddc470df7d78fecd876e6bc6fb23 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: IllegalStateException: Do not try to interpolate when trace is feasible --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-11-15 23:45:20,532 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 23:45:20,534 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 23:45:20,548 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 23:45:20,549 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 23:45:20,550 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 23:45:20,552 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 23:45:20,561 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 23:45:20,565 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 23:45:20,570 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 23:45:20,571 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 23:45:20,572 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 23:45:20,573 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 23:45:20,575 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 23:45:20,576 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 23:45:20,577 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 23:45:20,577 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 23:45:20,578 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 23:45:20,580 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 23:45:20,584 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 23:45:20,587 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 23:45:20,589 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 23:45:20,591 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 23:45:20,592 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 23:45:20,594 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 23:45:20,594 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 23:45:20,595 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 23:45:20,596 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 23:45:20,596 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 23:45:20,597 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 23:45:20,597 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 23:45:20,598 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 23:45:20,599 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 23:45:20,599 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 23:45:20,601 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 23:45:20,601 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 23:45:20,602 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 23:45:20,602 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 23:45:20,602 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 23:45:20,603 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 23:45:20,603 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 23:45:20,605 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_8bdb0122-4966-485c-939a-fd69b106b96e/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-15 23:45:20,629 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 23:45:20,639 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 23:45:20,641 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 23:45:20,641 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 23:45:20,641 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 23:45:20,642 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 23:45:20,642 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-15 23:45:20,642 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-15 23:45:20,642 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-15 23:45:20,643 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 23:45:20,643 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-15 23:45:20,643 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-15 23:45:20,643 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-15 23:45:20,644 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-15 23:45:20,644 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-15 23:45:20,645 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 23:45:20,645 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-15 23:45:20,646 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 23:45:20,646 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 23:45:20,646 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-15 23:45:20,646 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-15 23:45:20,647 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 23:45:20,647 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 23:45:20,647 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-15 23:45:20,647 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-15 23:45:20,648 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-15 23:45:20,648 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-15 23:45:20,648 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-15 23:45:20,648 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_8bdb0122-4966-485c-939a-fd69b106b96e/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 -> 67a25c9874f6ddc470df7d78fecd876e6bc6fb23 [2019-11-15 23:45:20,682 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 23:45:20,694 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 23:45:20,698 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 23:45:20,699 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 23:45:20,700 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 23:45:20,701 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_8bdb0122-4966-485c-939a-fd69b106b96e/bin/uautomizer/../../sv-benchmarks/c/pthread/stack_longer-2.i [2019-11-15 23:45:20,767 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8bdb0122-4966-485c-939a-fd69b106b96e/bin/uautomizer/data/aa0444f8f/aa5086a0d2f14875aaea82c6f8bd2ba9/FLAG80b450aea [2019-11-15 23:45:21,264 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 23:45:21,264 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_8bdb0122-4966-485c-939a-fd69b106b96e/sv-benchmarks/c/pthread/stack_longer-2.i [2019-11-15 23:45:21,279 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8bdb0122-4966-485c-939a-fd69b106b96e/bin/uautomizer/data/aa0444f8f/aa5086a0d2f14875aaea82c6f8bd2ba9/FLAG80b450aea [2019-11-15 23:45:21,577 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_8bdb0122-4966-485c-939a-fd69b106b96e/bin/uautomizer/data/aa0444f8f/aa5086a0d2f14875aaea82c6f8bd2ba9 [2019-11-15 23:45:21,579 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 23:45:21,580 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-15 23:45:21,581 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 23:45:21,581 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 23:45:21,584 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 23:45:21,585 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 11:45:21" (1/1) ... [2019-11-15 23:45:21,587 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d423bf3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:45:21, skipping insertion in model container [2019-11-15 23:45:21,587 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 11:45:21" (1/1) ... [2019-11-15 23:45:21,594 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 23:45:21,652 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 23:45:22,299 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 23:45:22,314 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 23:45:22,378 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 23:45:22,517 INFO L192 MainTranslator]: Completed translation [2019-11-15 23:45:22,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:45:22 WrapperNode [2019-11-15 23:45:22,518 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 23:45:22,519 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-15 23:45:22,519 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-15 23:45:22,519 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-15 23:45:22,527 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:45:22" (1/1) ... [2019-11-15 23:45:22,546 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:45:22" (1/1) ... [2019-11-15 23:45:22,572 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-15 23:45:22,572 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 23:45:22,572 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 23:45:22,573 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 23:45:22,582 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:45:22" (1/1) ... [2019-11-15 23:45:22,582 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:45:22" (1/1) ... [2019-11-15 23:45:22,586 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:45:22" (1/1) ... [2019-11-15 23:45:22,586 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:45:22" (1/1) ... [2019-11-15 23:45:22,595 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:45:22" (1/1) ... [2019-11-15 23:45:22,608 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:45:22" (1/1) ... [2019-11-15 23:45:22,611 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:45:22" (1/1) ... [2019-11-15 23:45:22,620 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 23:45:22,620 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 23:45:22,620 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 23:45:22,627 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 23:45:22,628 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:45:22" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8bdb0122-4966-485c-939a-fd69b106b96e/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 [2019-11-15 23:45:22,705 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2019-11-15 23:45:22,705 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2019-11-15 23:45:22,705 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2019-11-15 23:45:22,705 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2019-11-15 23:45:22,707 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-15 23:45:22,707 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-15 23:45:22,707 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-15 23:45:22,707 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-15 23:45:22,708 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2019-11-15 23:45:22,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-15 23:45:22,710 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 23:45:22,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 23:45:22,712 WARN L202 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-11-15 23:45:23,168 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 23:45:23,168 INFO L284 CfgBuilder]: Removed 22 assume(true) statements. [2019-11-15 23:45:23,169 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:45:23 BoogieIcfgContainer [2019-11-15 23:45:23,170 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 23:45:23,171 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-15 23:45:23,171 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-15 23:45:23,174 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-15 23:45:23,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.11 11:45:21" (1/3) ... [2019-11-15 23:45:23,175 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e077f52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 11:45:23, skipping insertion in model container [2019-11-15 23:45:23,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:45:22" (2/3) ... [2019-11-15 23:45:23,175 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e077f52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 11:45:23, skipping insertion in model container [2019-11-15 23:45:23,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:45:23" (3/3) ... [2019-11-15 23:45:23,177 INFO L109 eAbstractionObserver]: Analyzing ICFG stack_longer-2.i [2019-11-15 23:45:23,214 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:23,214 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:23,214 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:23,214 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:23,214 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:23,215 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:23,215 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:23,215 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:23,215 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:23,216 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:23,216 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:23,216 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#t~nondet42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:23,216 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#t~nondet42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:23,216 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#t~nondet43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:23,216 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:23,217 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#t~nondet43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:23,217 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:23,217 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:23,217 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:23,217 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:23,217 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:23,218 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:23,218 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:23,218 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:23,218 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:23,218 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#t~ret36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:23,218 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:23,219 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:23,219 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:23,219 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:23,219 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:23,219 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:23,219 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:23,220 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:23,220 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:23,220 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:23,220 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:23,220 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:23,220 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#t~ret44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:23,221 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:23,221 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#t~ret36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:23,221 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#t~ret44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:23,221 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#t~ret36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:23,221 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#t~ret44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:23,222 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#t~ret44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:23,222 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:23,222 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:23,222 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#t~ret36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:23,222 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:23,222 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#t~ret44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:23,223 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#t~ret44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:23,223 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#t~ret36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:23,223 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_inc_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:23,223 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:23,223 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#t~post41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:23,223 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_inc_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:23,224 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#t~post41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:23,224 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:23,224 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_inc_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:23,224 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#t~post41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:23,224 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_inc_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:23,225 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:23,225 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:23,226 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:23,226 WARN L315 ript$VariableManager]: TermVariabe Thread1_t2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:23,226 WARN L315 ript$VariableManager]: TermVariabe Thread1_t2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:23,226 WARN L315 ript$VariableManager]: TermVariabe Thread1_t2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:23,226 WARN L315 ript$VariableManager]: TermVariabe Thread1_t2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:23,226 WARN L315 ript$VariableManager]: TermVariabe Thread1_t2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:23,227 WARN L315 ript$VariableManager]: TermVariabe Thread1_t2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:23,227 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:23,227 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:23,227 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_#t~nondet46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:23,227 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_#t~nondet46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:23,228 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:23,228 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:23,228 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:23,228 WARN L315 ript$VariableManager]: TermVariabe Thread1_t2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:23,228 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_#t~post45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:23,228 WARN L315 ript$VariableManager]: TermVariabe Thread1_t2_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:23,229 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~mem40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:23,229 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:23,229 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~nondet37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:23,229 WARN L315 ript$VariableManager]: TermVariabe Thread1_t2_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:23,229 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_#t~post45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:23,229 WARN L315 ript$VariableManager]: TermVariabe Thread1_t2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:23,230 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:23,230 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:23,230 WARN L315 ript$VariableManager]: TermVariabe Thread1_t2_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:23,230 WARN L315 ript$VariableManager]: TermVariabe Thread1_t2_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:23,230 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_#t~post45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:23,230 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~nondet37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:23,231 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_dec_top_#t~post32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:23,231 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:23,231 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_dec_top_#t~post32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:23,231 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:23,231 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:23,231 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_dec_top_#t~post32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:23,232 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:23,232 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_dec_top_#t~post32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:23,232 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:23,232 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:23,232 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:23,233 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:23,233 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:23,233 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:23,233 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:23,233 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:23,233 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:23,234 WARN L315 ript$VariableManager]: TermVariabe Thread1_t2_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:23,234 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:23,234 WARN L315 ript$VariableManager]: TermVariabe Thread1_t2_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:23,234 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~mem40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:23,235 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~mem40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:23,235 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:23,235 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~mem40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:23,235 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:23,252 WARN L141 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-11-15 23:45:23,252 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-15 23:45:23,259 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-11-15 23:45:23,269 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-11-15 23:45:23,286 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-15 23:45:23,286 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-15 23:45:23,286 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-15 23:45:23,286 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 23:45:23,286 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 23:45:23,287 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-15 23:45:23,287 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 23:45:23,287 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-15 23:45:23,297 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 122 places, 130 transitions [2019-11-15 23:45:23,546 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 5568 states. [2019-11-15 23:45:23,548 INFO L276 IsEmpty]: Start isEmpty. Operand 5568 states. [2019-11-15 23:45:23,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2019-11-15 23:45:23,571 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:45:23,572 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:45:23,573 INFO L410 AbstractCegarLoop]: === Iteration 1 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:45:23,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:45:23,578 INFO L82 PathProgramCache]: Analyzing trace with hash -1732045183, now seen corresponding path program 1 times [2019-11-15 23:45:23,586 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:45:23,587 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674070242] [2019-11-15 23:45:23,587 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:45:23,587 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:45:23,587 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:45:23,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:45:23,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:45:23,877 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674070242] [2019-11-15 23:45:23,877 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:45:23,878 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-15 23:45:23,878 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176309599] [2019-11-15 23:45:23,882 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-15 23:45:23,883 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:45:23,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-15 23:45:23,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 23:45:23,900 INFO L87 Difference]: Start difference. First operand 5568 states. Second operand 3 states. [2019-11-15 23:45:24,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:45:24,093 INFO L93 Difference]: Finished difference Result 8079 states and 21423 transitions. [2019-11-15 23:45:24,093 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-15 23:45:24,094 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 43 [2019-11-15 23:45:24,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:45:24,178 INFO L225 Difference]: With dead ends: 8079 [2019-11-15 23:45:24,178 INFO L226 Difference]: Without dead ends: 7818 [2019-11-15 23:45:24,180 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 23:45:24,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7818 states. [2019-11-15 23:45:24,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7818 to 7530. [2019-11-15 23:45:24,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7530 states. [2019-11-15 23:45:24,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7530 states to 7530 states and 20173 transitions. [2019-11-15 23:45:24,594 INFO L78 Accepts]: Start accepts. Automaton has 7530 states and 20173 transitions. Word has length 43 [2019-11-15 23:45:24,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:45:24,596 INFO L462 AbstractCegarLoop]: Abstraction has 7530 states and 20173 transitions. [2019-11-15 23:45:24,596 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-15 23:45:24,597 INFO L276 IsEmpty]: Start isEmpty. Operand 7530 states and 20173 transitions. [2019-11-15 23:45:24,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-11-15 23:45:24,603 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:45:24,604 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:45:24,604 INFO L410 AbstractCegarLoop]: === Iteration 2 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:45:24,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:45:24,605 INFO L82 PathProgramCache]: Analyzing trace with hash 1039196014, now seen corresponding path program 1 times [2019-11-15 23:45:24,605 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:45:24,605 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035690341] [2019-11-15 23:45:24,605 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:45:24,606 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:45:24,606 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:45:24,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:45:24,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:45:24,746 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035690341] [2019-11-15 23:45:24,746 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:45:24,746 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-15 23:45:24,747 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583084597] [2019-11-15 23:45:24,748 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-15 23:45:24,749 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:45:24,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-15 23:45:24,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-15 23:45:24,749 INFO L87 Difference]: Start difference. First operand 7530 states and 20173 transitions. Second operand 4 states. [2019-11-15 23:45:24,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:45:24,947 INFO L93 Difference]: Finished difference Result 11067 states and 29548 transitions. [2019-11-15 23:45:24,947 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-15 23:45:24,948 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2019-11-15 23:45:24,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:45:25,039 INFO L225 Difference]: With dead ends: 11067 [2019-11-15 23:45:25,040 INFO L226 Difference]: Without dead ends: 11067 [2019-11-15 23:45:25,040 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-15 23:45:25,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11067 states. [2019-11-15 23:45:25,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11067 to 8097. [2019-11-15 23:45:25,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8097 states. [2019-11-15 23:45:25,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8097 states to 8097 states and 21685 transitions. [2019-11-15 23:45:25,477 INFO L78 Accepts]: Start accepts. Automaton has 8097 states and 21685 transitions. Word has length 53 [2019-11-15 23:45:25,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:45:25,478 INFO L462 AbstractCegarLoop]: Abstraction has 8097 states and 21685 transitions. [2019-11-15 23:45:25,478 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-15 23:45:25,478 INFO L276 IsEmpty]: Start isEmpty. Operand 8097 states and 21685 transitions. [2019-11-15 23:45:25,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2019-11-15 23:45:25,490 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:45:25,490 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:45:25,490 INFO L410 AbstractCegarLoop]: === Iteration 3 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:45:25,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:45:25,492 INFO L82 PathProgramCache]: Analyzing trace with hash 1806941690, now seen corresponding path program 1 times [2019-11-15 23:45:25,492 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:45:25,492 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045263754] [2019-11-15 23:45:25,493 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:45:25,493 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:45:25,493 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:45:25,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:45:25,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:45:25,612 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045263754] [2019-11-15 23:45:25,612 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:45:25,612 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-15 23:45:25,612 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247479808] [2019-11-15 23:45:25,614 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-15 23:45:25,616 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:45:25,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-15 23:45:25,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 23:45:25,618 INFO L87 Difference]: Start difference. First operand 8097 states and 21685 transitions. Second operand 3 states. [2019-11-15 23:45:25,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:45:25,715 INFO L93 Difference]: Finished difference Result 12177 states and 32438 transitions. [2019-11-15 23:45:25,716 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-15 23:45:25,716 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 68 [2019-11-15 23:45:25,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:45:25,747 INFO L225 Difference]: With dead ends: 12177 [2019-11-15 23:45:25,747 INFO L226 Difference]: Without dead ends: 12177 [2019-11-15 23:45:25,748 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 23:45:25,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12177 states. [2019-11-15 23:45:26,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12177 to 11112. [2019-11-15 23:45:26,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11112 states. [2019-11-15 23:45:26,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11112 states to 11112 states and 29864 transitions. [2019-11-15 23:45:26,100 INFO L78 Accepts]: Start accepts. Automaton has 11112 states and 29864 transitions. Word has length 68 [2019-11-15 23:45:26,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:45:26,101 INFO L462 AbstractCegarLoop]: Abstraction has 11112 states and 29864 transitions. [2019-11-15 23:45:26,101 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-15 23:45:26,102 INFO L276 IsEmpty]: Start isEmpty. Operand 11112 states and 29864 transitions. [2019-11-15 23:45:26,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2019-11-15 23:45:26,113 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:45:26,113 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:45:26,113 INFO L410 AbstractCegarLoop]: === Iteration 4 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:45:26,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:45:26,114 INFO L82 PathProgramCache]: Analyzing trace with hash 2125882844, now seen corresponding path program 1 times [2019-11-15 23:45:26,114 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:45:26,115 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506774616] [2019-11-15 23:45:26,115 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:45:26,115 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:45:26,115 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:45:26,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:45:26,267 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:45:26,268 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506774616] [2019-11-15 23:45:26,268 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [311534969] [2019-11-15 23:45:26,268 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8bdb0122-4966-485c-939a-fd69b106b96e/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 [2019-11-15 23:45:26,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:45:26,373 INFO L256 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-15 23:45:26,381 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:45:26,439 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:45:26,439 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 23:45:26,440 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2019-11-15 23:45:26,440 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584670454] [2019-11-15 23:45:26,441 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-15 23:45:26,441 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:45:26,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-15 23:45:26,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-11-15 23:45:26,442 INFO L87 Difference]: Start difference. First operand 11112 states and 29864 transitions. Second operand 7 states. [2019-11-15 23:45:26,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:45:26,698 INFO L93 Difference]: Finished difference Result 16698 states and 44481 transitions. [2019-11-15 23:45:26,699 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-15 23:45:26,699 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 75 [2019-11-15 23:45:26,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:45:26,744 INFO L225 Difference]: With dead ends: 16698 [2019-11-15 23:45:26,744 INFO L226 Difference]: Without dead ends: 16602 [2019-11-15 23:45:26,745 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2019-11-15 23:45:26,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16602 states. [2019-11-15 23:45:27,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16602 to 13452. [2019-11-15 23:45:27,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13452 states. [2019-11-15 23:45:27,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13452 states to 13452 states and 36229 transitions. [2019-11-15 23:45:27,216 INFO L78 Accepts]: Start accepts. Automaton has 13452 states and 36229 transitions. Word has length 75 [2019-11-15 23:45:27,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:45:27,217 INFO L462 AbstractCegarLoop]: Abstraction has 13452 states and 36229 transitions. [2019-11-15 23:45:27,217 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-15 23:45:27,217 INFO L276 IsEmpty]: Start isEmpty. Operand 13452 states and 36229 transitions. [2019-11-15 23:45:27,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2019-11-15 23:45:27,228 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:45:27,228 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:45:27,557 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:45:27,557 INFO L410 AbstractCegarLoop]: === Iteration 5 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:45:27,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:45:27,558 INFO L82 PathProgramCache]: Analyzing trace with hash -1588557679, now seen corresponding path program 1 times [2019-11-15 23:45:27,558 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:45:27,558 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315214948] [2019-11-15 23:45:27,558 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:45:27,558 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:45:27,559 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:45:27,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:45:27,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:45:27,631 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315214948] [2019-11-15 23:45:27,631 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:45:27,631 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-15 23:45:27,631 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677556657] [2019-11-15 23:45:27,632 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-15 23:45:27,632 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:45:27,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-15 23:45:27,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 23:45:27,634 INFO L87 Difference]: Start difference. First operand 13452 states and 36229 transitions. Second operand 3 states. [2019-11-15 23:45:27,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:45:27,674 INFO L93 Difference]: Finished difference Result 5253 states and 13360 transitions. [2019-11-15 23:45:27,675 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-15 23:45:27,676 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 78 [2019-11-15 23:45:27,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:45:27,689 INFO L225 Difference]: With dead ends: 5253 [2019-11-15 23:45:27,689 INFO L226 Difference]: Without dead ends: 5253 [2019-11-15 23:45:27,690 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 23:45:27,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5253 states. [2019-11-15 23:45:27,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5253 to 4590. [2019-11-15 23:45:27,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4590 states. [2019-11-15 23:45:27,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4590 states to 4590 states and 11588 transitions. [2019-11-15 23:45:27,788 INFO L78 Accepts]: Start accepts. Automaton has 4590 states and 11588 transitions. Word has length 78 [2019-11-15 23:45:27,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:45:27,788 INFO L462 AbstractCegarLoop]: Abstraction has 4590 states and 11588 transitions. [2019-11-15 23:45:27,789 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-15 23:45:27,789 INFO L276 IsEmpty]: Start isEmpty. Operand 4590 states and 11588 transitions. [2019-11-15 23:45:27,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2019-11-15 23:45:27,796 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:45:27,797 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:45:27,797 INFO L410 AbstractCegarLoop]: === Iteration 6 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:45:27,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:45:27,797 INFO L82 PathProgramCache]: Analyzing trace with hash 1589413268, now seen corresponding path program 1 times [2019-11-15 23:45:27,798 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:45:27,798 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680837721] [2019-11-15 23:45:27,798 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:45:27,798 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:45:27,798 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:45:27,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:45:28,086 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Undeclared function symbol (const Int) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.term(NoopScript.java:478) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.term(WrapperScript.java:250) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.term(WrapperScript.java:250) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.SmtUtils.termWithLocalSimplification(SmtUtils.java:1305) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.SmtUtils.termWithLocalSimplification(SmtUtils.java:1186) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.TermTransferrer.convertApplicationTerm(TermTransferrer.java:182) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer$BuildApplicationTerm.walk(TermTransformer.java:339) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.transform(TermTransformer.java:272) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.computePredicates(NestedInterpolantsBuilder.java:574) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:172) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:305) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:207) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:109) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.checkFeasibility(TraceAbstractionRefinementEngine.java:244) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:160) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:128) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-11-15 23:45:28,090 INFO L168 Benchmark]: Toolchain (without parser) took 6509.68 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 295.2 MB). Free memory was 946.1 MB in the beginning and 1.1 GB in the end (delta: -163.6 MB). Peak memory consumption was 131.6 MB. Max. memory is 11.5 GB. [2019-11-15 23:45:28,091 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. [2019-11-15 23:45:28,092 INFO L168 Benchmark]: CACSL2BoogieTranslator took 937.65 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.2 MB). Free memory was 946.1 MB in the beginning and 1.1 GB in the end (delta: -115.4 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. [2019-11-15 23:45:28,093 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.29 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. [2019-11-15 23:45:28,093 INFO L168 Benchmark]: Boogie Preprocessor took 47.49 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. [2019-11-15 23:45:28,094 INFO L168 Benchmark]: RCFGBuilder took 549.66 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 36.4 MB). Peak memory consumption was 36.4 MB. Max. memory is 11.5 GB. [2019-11-15 23:45:28,094 INFO L168 Benchmark]: TraceAbstraction took 4917.92 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 173.0 MB). Free memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: -84.6 MB). Peak memory consumption was 88.4 MB. Max. memory is 11.5 GB. [2019-11-15 23:45:28,097 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 937.65 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.2 MB). Free memory was 946.1 MB in the beginning and 1.1 GB in the end (delta: -115.4 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 53.29 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. * Boogie Preprocessor took 47.49 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 549.66 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 36.4 MB). Peak memory consumption was 36.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4917.92 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 173.0 MB). Free memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: -84.6 MB). Peak memory consumption was 88.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: Undeclared function symbol (const Int) de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: Undeclared function symbol (const Int): de.uni_freiburg.informatik.ultimate.logic.NoopScript.term(NoopScript.java:478) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-cad4683 [2019-11-15 23:45:30,526 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 23:45:30,528 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 23:45:30,538 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 23:45:30,538 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 23:45:30,539 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 23:45:30,540 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 23:45:30,542 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 23:45:30,544 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 23:45:30,545 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 23:45:30,546 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 23:45:30,547 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 23:45:30,547 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 23:45:30,548 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 23:45:30,549 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 23:45:30,550 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 23:45:30,551 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 23:45:30,552 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 23:45:30,554 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 23:45:30,555 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 23:45:30,557 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 23:45:30,558 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 23:45:30,559 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 23:45:30,560 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 23:45:30,562 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 23:45:30,563 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 23:45:30,563 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 23:45:30,564 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 23:45:30,564 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 23:45:30,565 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 23:45:30,565 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 23:45:30,566 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 23:45:30,567 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 23:45:30,568 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 23:45:30,569 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 23:45:30,569 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 23:45:30,570 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 23:45:30,570 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 23:45:30,570 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 23:45:30,571 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 23:45:30,572 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 23:45:30,572 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_8bdb0122-4966-485c-939a-fd69b106b96e/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-15 23:45:30,586 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 23:45:30,586 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 23:45:30,587 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 23:45:30,587 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 23:45:30,588 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 23:45:30,588 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 23:45:30,588 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-15 23:45:30,588 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-15 23:45:30,588 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 23:45:30,589 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-15 23:45:30,589 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-15 23:45:30,589 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-15 23:45:30,589 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-15 23:45:30,590 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-15 23:45:30,590 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-15 23:45:30,590 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-15 23:45:30,590 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 23:45:30,590 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-15 23:45:30,591 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 23:45:30,591 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 23:45:30,591 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-15 23:45:30,591 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-15 23:45:30,591 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 23:45:30,592 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 23:45:30,592 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-15 23:45:30,592 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-15 23:45:30,592 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-15 23:45:30,592 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-15 23:45:30,593 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-15 23:45:30,593 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-15 23:45:30,593 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_8bdb0122-4966-485c-939a-fd69b106b96e/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 -> 67a25c9874f6ddc470df7d78fecd876e6bc6fb23 [2019-11-15 23:45:30,659 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 23:45:30,670 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 23:45:30,673 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 23:45:30,674 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 23:45:30,674 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 23:45:30,675 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_8bdb0122-4966-485c-939a-fd69b106b96e/bin/uautomizer/../../sv-benchmarks/c/pthread/stack_longer-2.i [2019-11-15 23:45:30,737 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8bdb0122-4966-485c-939a-fd69b106b96e/bin/uautomizer/data/3d7fecf4b/f222d7b51d824e9281385f0a774c2dae/FLAG5b0691e2e [2019-11-15 23:45:31,229 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 23:45:31,230 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_8bdb0122-4966-485c-939a-fd69b106b96e/sv-benchmarks/c/pthread/stack_longer-2.i [2019-11-15 23:45:31,250 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8bdb0122-4966-485c-939a-fd69b106b96e/bin/uautomizer/data/3d7fecf4b/f222d7b51d824e9281385f0a774c2dae/FLAG5b0691e2e [2019-11-15 23:45:31,588 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_8bdb0122-4966-485c-939a-fd69b106b96e/bin/uautomizer/data/3d7fecf4b/f222d7b51d824e9281385f0a774c2dae [2019-11-15 23:45:31,590 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 23:45:31,592 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-15 23:45:31,593 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 23:45:31,593 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 23:45:31,597 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 23:45:31,597 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 11:45:31" (1/1) ... [2019-11-15 23:45:31,600 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11aac8fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:45:31, skipping insertion in model container [2019-11-15 23:45:31,600 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 11:45:31" (1/1) ... [2019-11-15 23:45:31,607 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 23:45:31,666 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 23:45:32,260 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 23:45:32,275 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 23:45:32,320 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 23:45:32,478 INFO L192 MainTranslator]: Completed translation [2019-11-15 23:45:32,478 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:45:32 WrapperNode [2019-11-15 23:45:32,478 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 23:45:32,479 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-15 23:45:32,479 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-15 23:45:32,480 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-15 23:45:32,489 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:45:32" (1/1) ... [2019-11-15 23:45:32,531 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:45:32" (1/1) ... [2019-11-15 23:45:32,563 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-15 23:45:32,563 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 23:45:32,563 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 23:45:32,563 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 23:45:32,578 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:45:32" (1/1) ... [2019-11-15 23:45:32,580 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:45:32" (1/1) ... [2019-11-15 23:45:32,598 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:45:32" (1/1) ... [2019-11-15 23:45:32,599 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:45:32" (1/1) ... [2019-11-15 23:45:32,609 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:45:32" (1/1) ... [2019-11-15 23:45:32,623 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:45:32" (1/1) ... [2019-11-15 23:45:32,634 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:45:32" (1/1) ... [2019-11-15 23:45:32,647 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 23:45:32,647 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 23:45:32,647 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 23:45:32,647 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 23:45:32,648 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:45:32" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8bdb0122-4966-485c-939a-fd69b106b96e/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 [2019-11-15 23:45:32,709 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-15 23:45:32,709 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2019-11-15 23:45:32,710 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2019-11-15 23:45:32,710 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2019-11-15 23:45:32,710 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2019-11-15 23:45:32,711 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-15 23:45:32,711 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-15 23:45:32,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-15 23:45:32,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2019-11-15 23:45:32,711 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2019-11-15 23:45:32,712 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 23:45:32,712 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 23:45:32,714 WARN L202 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-11-15 23:45:33,264 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 23:45:33,264 INFO L284 CfgBuilder]: Removed 22 assume(true) statements. [2019-11-15 23:45:33,265 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:45:33 BoogieIcfgContainer [2019-11-15 23:45:33,266 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 23:45:33,267 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-15 23:45:33,267 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-15 23:45:33,270 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-15 23:45:33,270 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.11 11:45:31" (1/3) ... [2019-11-15 23:45:33,275 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f3575ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 11:45:33, skipping insertion in model container [2019-11-15 23:45:33,276 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:45:32" (2/3) ... [2019-11-15 23:45:33,277 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f3575ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 11:45:33, skipping insertion in model container [2019-11-15 23:45:33,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:45:33" (3/3) ... [2019-11-15 23:45:33,279 INFO L109 eAbstractionObserver]: Analyzing ICFG stack_longer-2.i [2019-11-15 23:45:33,325 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:33,326 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:33,326 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:33,326 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:33,326 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:33,327 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:33,327 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:33,327 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:33,327 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:33,328 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:33,328 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:33,329 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#t~nondet42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:33,329 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#t~nondet42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:33,329 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#t~nondet43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:33,330 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:33,335 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#t~nondet43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:33,335 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:33,336 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:33,336 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:33,336 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:33,336 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:33,337 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:33,337 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:33,337 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:33,338 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:33,338 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#t~ret36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:33,338 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:33,338 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:33,339 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:33,339 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:33,340 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:33,340 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:33,340 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:33,341 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:33,341 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:33,341 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:33,341 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:33,342 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:33,342 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#t~ret44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:33,343 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:33,343 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#t~ret36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:33,343 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#t~ret44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:33,343 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#t~ret44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:33,344 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:33,345 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:33,345 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#t~ret36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:33,345 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:33,345 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#t~ret44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:33,346 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#t~ret44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:33,346 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#t~ret36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:33,346 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_inc_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:33,346 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:33,347 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#t~post41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:33,347 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_inc_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:33,347 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#t~post41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:33,347 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:33,347 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_inc_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:33,348 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#t~post41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:33,348 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_inc_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:33,348 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:33,350 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:33,350 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:33,350 WARN L315 ript$VariableManager]: TermVariabe Thread1_t2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:33,350 WARN L315 ript$VariableManager]: TermVariabe Thread1_t2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:33,351 WARN L315 ript$VariableManager]: TermVariabe Thread1_t2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:33,351 WARN L315 ript$VariableManager]: TermVariabe Thread1_t2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:33,351 WARN L315 ript$VariableManager]: TermVariabe Thread1_t2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:33,352 WARN L315 ript$VariableManager]: TermVariabe Thread1_t2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:33,352 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:33,352 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:33,355 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_#t~nondet46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:33,355 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_#t~nondet46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:33,356 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:33,356 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:33,356 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:33,357 WARN L315 ript$VariableManager]: TermVariabe Thread1_t2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:33,357 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_#t~post45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:33,357 WARN L315 ript$VariableManager]: TermVariabe Thread1_t2_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:33,357 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~mem40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:33,357 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:33,358 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~nondet37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:33,358 WARN L315 ript$VariableManager]: TermVariabe Thread1_t2_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:33,358 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_#t~post45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:33,358 WARN L315 ript$VariableManager]: TermVariabe Thread1_t2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:33,359 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:33,359 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:33,360 WARN L315 ript$VariableManager]: TermVariabe Thread1_t2_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:33,360 WARN L315 ript$VariableManager]: TermVariabe Thread1_t2_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:33,361 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_#t~post45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:33,362 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~nondet37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:33,362 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_dec_top_#t~post32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:33,362 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:33,362 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_dec_top_#t~post32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:33,363 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:33,363 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:33,363 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_dec_top_#t~post32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:33,363 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:33,364 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:33,367 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_dec_top_#t~post32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:33,368 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:33,368 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:33,368 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:33,368 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:33,369 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:33,369 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:33,370 WARN L315 ript$VariableManager]: TermVariabe Thread1_t2_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:33,370 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:33,371 WARN L315 ript$VariableManager]: TermVariabe Thread1_t2_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:33,371 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~mem40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:33,371 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~mem40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:33,380 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:33,381 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:33,382 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~mem40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:45:33,402 WARN L141 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-11-15 23:45:33,402 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-15 23:45:33,410 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-11-15 23:45:33,420 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-11-15 23:45:33,435 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-15 23:45:33,435 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-15 23:45:33,436 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-15 23:45:33,436 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 23:45:33,436 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 23:45:33,436 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-15 23:45:33,436 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 23:45:33,436 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-15 23:45:33,447 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 118 places, 126 transitions [2019-11-15 23:45:33,738 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 5064 states. [2019-11-15 23:45:33,741 INFO L276 IsEmpty]: Start isEmpty. Operand 5064 states. [2019-11-15 23:45:33,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2019-11-15 23:45:33,771 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:45:33,772 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:45:33,774 INFO L410 AbstractCegarLoop]: === Iteration 1 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:45:33,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:45:33,779 INFO L82 PathProgramCache]: Analyzing trace with hash -1328304509, now seen corresponding path program 1 times [2019-11-15 23:45:33,792 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 23:45:33,792 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [890364705] [2019-11-15 23:45:33,792 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8bdb0122-4966-485c-939a-fd69b106b96e/bin/uautomizer/cvc4 Starting monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 23:45:34,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:45:34,048 INFO L256 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-15 23:45:34,054 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:45:34,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:45:34,116 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 23:45:34,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:45:34,134 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [890364705] [2019-11-15 23:45:34,135 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:45:34,135 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-11-15 23:45:34,135 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50307545] [2019-11-15 23:45:34,142 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-15 23:45:34,142 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 23:45:34,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-15 23:45:34,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-15 23:45:34,157 INFO L87 Difference]: Start difference. First operand 5064 states. Second operand 4 states. [2019-11-15 23:45:34,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:45:34,391 INFO L93 Difference]: Finished difference Result 9651 states and 25698 transitions. [2019-11-15 23:45:34,392 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-15 23:45:34,393 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 42 [2019-11-15 23:45:34,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:45:34,481 INFO L225 Difference]: With dead ends: 9651 [2019-11-15 23:45:34,481 INFO L226 Difference]: Without dead ends: 9543 [2019-11-15 23:45:34,482 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-15 23:45:34,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9543 states. [2019-11-15 23:45:34,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9543 to 8187. [2019-11-15 23:45:34,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8187 states. [2019-11-15 23:45:34,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8187 states to 8187 states and 22093 transitions. [2019-11-15 23:45:34,960 INFO L78 Accepts]: Start accepts. Automaton has 8187 states and 22093 transitions. Word has length 42 [2019-11-15 23:45:34,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:45:34,961 INFO L462 AbstractCegarLoop]: Abstraction has 8187 states and 22093 transitions. [2019-11-15 23:45:34,962 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-15 23:45:34,962 INFO L276 IsEmpty]: Start isEmpty. Operand 8187 states and 22093 transitions. [2019-11-15 23:45:34,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2019-11-15 23:45:34,966 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:45:34,966 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:45:35,175 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 23:45:35,175 INFO L410 AbstractCegarLoop]: === Iteration 2 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:45:35,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:45:35,176 INFO L82 PathProgramCache]: Analyzing trace with hash -1148887482, now seen corresponding path program 1 times [2019-11-15 23:45:35,176 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 23:45:35,176 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1431602933] [2019-11-15 23:45:35,177 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8bdb0122-4966-485c-939a-fd69b106b96e/bin/uautomizer/cvc4 Starting monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 23:45:35,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:45:35,287 INFO L256 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-15 23:45:35,289 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:45:35,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:45:35,307 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 23:45:35,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:45:35,324 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1431602933] [2019-11-15 23:45:35,324 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:45:35,324 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-11-15 23:45:35,324 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932048367] [2019-11-15 23:45:35,331 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-15 23:45:35,333 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 23:45:35,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-15 23:45:35,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-15 23:45:35,334 INFO L87 Difference]: Start difference. First operand 8187 states and 22093 transitions. Second operand 4 states. [2019-11-15 23:45:35,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:45:35,508 INFO L93 Difference]: Finished difference Result 12888 states and 34483 transitions. [2019-11-15 23:45:35,509 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-15 23:45:35,509 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 43 [2019-11-15 23:45:35,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:45:35,593 INFO L225 Difference]: With dead ends: 12888 [2019-11-15 23:45:35,594 INFO L226 Difference]: Without dead ends: 12735 [2019-11-15 23:45:35,594 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-15 23:45:35,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12735 states. [2019-11-15 23:45:35,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12735 to 11028. [2019-11-15 23:45:35,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11028 states. [2019-11-15 23:45:35,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11028 states to 11028 states and 29887 transitions. [2019-11-15 23:45:35,975 INFO L78 Accepts]: Start accepts. Automaton has 11028 states and 29887 transitions. Word has length 43 [2019-11-15 23:45:35,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:45:35,976 INFO L462 AbstractCegarLoop]: Abstraction has 11028 states and 29887 transitions. [2019-11-15 23:45:35,976 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-15 23:45:35,976 INFO L276 IsEmpty]: Start isEmpty. Operand 11028 states and 29887 transitions. [2019-11-15 23:45:35,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-11-15 23:45:35,981 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:45:35,981 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:45:36,184 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 23:45:36,184 INFO L410 AbstractCegarLoop]: === Iteration 3 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:45:36,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:45:36,185 INFO L82 PathProgramCache]: Analyzing trace with hash 1561423665, now seen corresponding path program 1 times [2019-11-15 23:45:36,187 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 23:45:36,192 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1343137031] [2019-11-15 23:45:36,192 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8bdb0122-4966-485c-939a-fd69b106b96e/bin/uautomizer/cvc4 Starting monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 23:45:36,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:45:36,330 INFO L256 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-15 23:45:36,332 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:45:36,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:45:36,352 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 23:45:36,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:45:36,374 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1343137031] [2019-11-15 23:45:36,374 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:45:36,374 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-15 23:45:36,374 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243434257] [2019-11-15 23:45:36,377 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-15 23:45:36,377 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 23:45:36,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-15 23:45:36,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-15 23:45:36,378 INFO L87 Difference]: Start difference. First operand 11028 states and 29887 transitions. Second operand 6 states. [2019-11-15 23:45:36,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:45:36,523 INFO L93 Difference]: Finished difference Result 13794 states and 37287 transitions. [2019-11-15 23:45:36,524 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-15 23:45:36,524 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 51 [2019-11-15 23:45:36,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:45:36,561 INFO L225 Difference]: With dead ends: 13794 [2019-11-15 23:45:36,561 INFO L226 Difference]: Without dead ends: 13794 [2019-11-15 23:45:36,562 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-15 23:45:36,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13794 states. [2019-11-15 23:45:36,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13794 to 11136. [2019-11-15 23:45:36,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11136 states. [2019-11-15 23:45:36,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11136 states to 11136 states and 30149 transitions. [2019-11-15 23:45:36,940 INFO L78 Accepts]: Start accepts. Automaton has 11136 states and 30149 transitions. Word has length 51 [2019-11-15 23:45:36,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:45:36,942 INFO L462 AbstractCegarLoop]: Abstraction has 11136 states and 30149 transitions. [2019-11-15 23:45:36,942 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-15 23:45:36,942 INFO L276 IsEmpty]: Start isEmpty. Operand 11136 states and 30149 transitions. [2019-11-15 23:45:36,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2019-11-15 23:45:36,955 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:45:36,955 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:45:37,162 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 23:45:37,163 INFO L410 AbstractCegarLoop]: === Iteration 4 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:45:37,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:45:37,163 INFO L82 PathProgramCache]: Analyzing trace with hash 190287178, now seen corresponding path program 1 times [2019-11-15 23:45:37,164 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 23:45:37,164 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1537238817] [2019-11-15 23:45:37,164 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8bdb0122-4966-485c-939a-fd69b106b96e/bin/uautomizer/cvc4 Starting monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 23:45:37,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:45:37,290 INFO L256 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-15 23:45:37,292 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:45:37,445 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:45:37,445 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 23:45:37,514 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:45:37,514 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1537238817] [2019-11-15 23:45:37,514 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 23:45:37,514 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2019-11-15 23:45:37,515 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925735676] [2019-11-15 23:45:37,515 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-15 23:45:37,515 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 23:45:37,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-15 23:45:37,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2019-11-15 23:45:37,516 INFO L87 Difference]: Start difference. First operand 11136 states and 30149 transitions. Second operand 8 states. [2019-11-15 23:45:37,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:45:37,974 INFO L93 Difference]: Finished difference Result 21591 states and 57325 transitions. [2019-11-15 23:45:37,974 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-11-15 23:45:37,975 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 72 [2019-11-15 23:45:37,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:45:38,030 INFO L225 Difference]: With dead ends: 21591 [2019-11-15 23:45:38,032 INFO L226 Difference]: Without dead ends: 21591 [2019-11-15 23:45:38,033 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=154, Unknown=0, NotChecked=0, Total=240 [2019-11-15 23:45:38,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21591 states. [2019-11-15 23:45:38,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21591 to 17220. [2019-11-15 23:45:38,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17220 states. [2019-11-15 23:45:38,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17220 states to 17220 states and 46398 transitions. [2019-11-15 23:45:38,460 INFO L78 Accepts]: Start accepts. Automaton has 17220 states and 46398 transitions. Word has length 72 [2019-11-15 23:45:38,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:45:38,462 INFO L462 AbstractCegarLoop]: Abstraction has 17220 states and 46398 transitions. [2019-11-15 23:45:38,462 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-15 23:45:38,462 INFO L276 IsEmpty]: Start isEmpty. Operand 17220 states and 46398 transitions. [2019-11-15 23:45:38,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2019-11-15 23:45:38,472 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:45:38,473 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:45:38,674 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 23:45:38,675 INFO L410 AbstractCegarLoop]: === Iteration 5 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:45:38,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:45:38,675 INFO L82 PathProgramCache]: Analyzing trace with hash 965711622, now seen corresponding path program 1 times [2019-11-15 23:45:38,676 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 23:45:38,676 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1820272967] [2019-11-15 23:45:38,677 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8bdb0122-4966-485c-939a-fd69b106b96e/bin/uautomizer/cvc4 Starting monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 23:45:38,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:45:38,881 INFO L256 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-15 23:45:38,884 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:45:38,937 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2019-11-15 23:45:38,941 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 23:45:38,947 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 23:45:38,948 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-15 23:45:38,948 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2019-11-15 23:45:38,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:45:38,967 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 23:45:38,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:45:38,984 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1820272967] [2019-11-15 23:45:38,985 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:45:38,985 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-11-15 23:45:38,985 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853011814] [2019-11-15 23:45:38,986 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-15 23:45:38,986 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 23:45:38,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-15 23:45:38,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 23:45:38,986 INFO L87 Difference]: Start difference. First operand 17220 states and 46398 transitions. Second operand 3 states. [2019-11-15 23:45:39,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:45:39,043 INFO L93 Difference]: Finished difference Result 6777 states and 17257 transitions. [2019-11-15 23:45:39,043 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-15 23:45:39,043 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 75 [2019-11-15 23:45:39,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:45:39,058 INFO L225 Difference]: With dead ends: 6777 [2019-11-15 23:45:39,059 INFO L226 Difference]: Without dead ends: 6777 [2019-11-15 23:45:39,059 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 146 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 23:45:39,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6777 states. [2019-11-15 23:45:39,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6777 to 6057. [2019-11-15 23:45:39,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6057 states. [2019-11-15 23:45:39,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6057 states to 6057 states and 15307 transitions. [2019-11-15 23:45:39,177 INFO L78 Accepts]: Start accepts. Automaton has 6057 states and 15307 transitions. Word has length 75 [2019-11-15 23:45:39,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:45:39,178 INFO L462 AbstractCegarLoop]: Abstraction has 6057 states and 15307 transitions. [2019-11-15 23:45:39,178 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-15 23:45:39,178 INFO L276 IsEmpty]: Start isEmpty. Operand 6057 states and 15307 transitions. [2019-11-15 23:45:39,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2019-11-15 23:45:39,185 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:45:39,185 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:45:39,388 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 23:45:39,388 INFO L410 AbstractCegarLoop]: === Iteration 6 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:45:39,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:45:39,389 INFO L82 PathProgramCache]: Analyzing trace with hash -720461378, now seen corresponding path program 1 times [2019-11-15 23:45:39,389 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 23:45:39,390 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [471733693] [2019-11-15 23:45:39,390 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8bdb0122-4966-485c-939a-fd69b106b96e/bin/uautomizer/cvc4 Starting monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 23:45:39,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:45:39,715 INFO L256 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 29 conjunts are in the unsatisfiable core [2019-11-15 23:45:39,720 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:45:40,105 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2019-11-15 23:45:40,106 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 23:45:40,126 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 23:45:40,127 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-15 23:45:40,127 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:28, output treesize:21 [2019-11-15 23:45:40,336 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 23:45:40,337 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 34 [2019-11-15 23:45:40,337 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 23:45:40,340 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 23:45:40,373 INFO L567 ElimStorePlain]: treesize reduction 16, result has 56.8 percent of original size [2019-11-15 23:45:40,374 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-15 23:45:40,374 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:25, output treesize:21 [2019-11-15 23:45:41,224 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 23:45:41,224 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 18 [2019-11-15 23:45:41,225 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 23:45:41,233 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 23:45:41,234 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-15 23:45:41,234 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:22, output treesize:3 [2019-11-15 23:45:41,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:45:41,410 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 23:45:42,719 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 42 [2019-11-15 23:45:42,720 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 3 xjuncts. [2019-11-15 23:45:42,770 INFO L567 ElimStorePlain]: treesize reduction 17, result has 52.8 percent of original size [2019-11-15 23:45:42,770 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 3 xjuncts. [2019-11-15 23:45:42,771 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:24, output treesize:19 [2019-11-15 23:45:43,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:45:43,429 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [471733693] [2019-11-15 23:45:43,429 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:45:43,429 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [24, 20] imperfect sequences [] total 42 [2019-11-15 23:45:43,429 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133016556] [2019-11-15 23:45:43,431 INFO L442 AbstractCegarLoop]: Interpolant automaton has 42 states [2019-11-15 23:45:43,431 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 23:45:43,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2019-11-15 23:45:43,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=1593, Unknown=0, NotChecked=0, Total=1722 [2019-11-15 23:45:43,432 INFO L87 Difference]: Start difference. First operand 6057 states and 15307 transitions. Second operand 42 states. [2019-11-15 23:45:46,736 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 42 [2019-11-15 23:46:03,356 WARN L191 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 53 [2019-11-15 23:46:05,871 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2019-11-15 23:46:10,503 WARN L191 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2019-11-15 23:46:10,860 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2019-11-15 23:46:14,258 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2019-11-15 23:46:14,806 WARN L191 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2019-11-15 23:46:15,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:46:15,873 INFO L93 Difference]: Finished difference Result 22241 states and 56157 transitions. [2019-11-15 23:46:15,874 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2019-11-15 23:46:15,874 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 81 [2019-11-15 23:46:15,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:46:15,912 INFO L225 Difference]: With dead ends: 22241 [2019-11-15 23:46:15,912 INFO L226 Difference]: Without dead ends: 21824 [2019-11-15 23:46:15,921 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 195 SyntacticMatches, 1 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10428 ImplicationChecksByTransitivity, 25.0s TimeCoverageRelationStatistics Valid=3428, Invalid=27022, Unknown=0, NotChecked=0, Total=30450 [2019-11-15 23:46:15,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21824 states. [2019-11-15 23:46:16,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21824 to 8459. [2019-11-15 23:46:16,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8459 states. [2019-11-15 23:46:16,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8459 states to 8459 states and 21688 transitions. [2019-11-15 23:46:16,167 INFO L78 Accepts]: Start accepts. Automaton has 8459 states and 21688 transitions. Word has length 81 [2019-11-15 23:46:16,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:46:16,169 INFO L462 AbstractCegarLoop]: Abstraction has 8459 states and 21688 transitions. [2019-11-15 23:46:16,169 INFO L463 AbstractCegarLoop]: Interpolant automaton has 42 states. [2019-11-15 23:46:16,169 INFO L276 IsEmpty]: Start isEmpty. Operand 8459 states and 21688 transitions. [2019-11-15 23:46:16,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2019-11-15 23:46:16,189 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:46:16,189 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:46:16,395 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 23:46:16,395 INFO L410 AbstractCegarLoop]: === Iteration 7 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:46:16,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:46:16,395 INFO L82 PathProgramCache]: Analyzing trace with hash 1856622174, now seen corresponding path program 1 times [2019-11-15 23:46:16,396 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 23:46:16,396 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1951780209] [2019-11-15 23:46:16,396 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8bdb0122-4966-485c-939a-fd69b106b96e/bin/uautomizer/cvc4 Starting monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 23:46:16,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:46:16,510 INFO L256 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-15 23:46:16,513 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:46:16,549 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-11-15 23:46:16,550 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 23:46:16,643 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-11-15 23:46:16,644 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1951780209] [2019-11-15 23:46:16,644 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 23:46:16,647 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2019-11-15 23:46:16,647 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583380081] [2019-11-15 23:46:16,648 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-15 23:46:16,648 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 23:46:16,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-15 23:46:16,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-11-15 23:46:16,649 INFO L87 Difference]: Start difference. First operand 8459 states and 21688 transitions. Second operand 10 states. [2019-11-15 23:46:16,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:46:16,922 INFO L93 Difference]: Finished difference Result 15053 states and 38146 transitions. [2019-11-15 23:46:16,922 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-11-15 23:46:16,922 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 102 [2019-11-15 23:46:16,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:46:16,943 INFO L225 Difference]: With dead ends: 15053 [2019-11-15 23:46:16,943 INFO L226 Difference]: Without dead ends: 14522 [2019-11-15 23:46:16,944 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=116, Invalid=346, Unknown=0, NotChecked=0, Total=462 [2019-11-15 23:46:16,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14522 states. [2019-11-15 23:46:17,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14522 to 8688. [2019-11-15 23:46:17,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8688 states. [2019-11-15 23:46:17,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8688 states to 8688 states and 22311 transitions. [2019-11-15 23:46:17,136 INFO L78 Accepts]: Start accepts. Automaton has 8688 states and 22311 transitions. Word has length 102 [2019-11-15 23:46:17,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:46:17,136 INFO L462 AbstractCegarLoop]: Abstraction has 8688 states and 22311 transitions. [2019-11-15 23:46:17,136 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-15 23:46:17,136 INFO L276 IsEmpty]: Start isEmpty. Operand 8688 states and 22311 transitions. [2019-11-15 23:46:17,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2019-11-15 23:46:17,152 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:46:17,152 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:46:17,367 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 23:46:17,368 INFO L410 AbstractCegarLoop]: === Iteration 8 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:46:17,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:46:17,368 INFO L82 PathProgramCache]: Analyzing trace with hash -1011151158, now seen corresponding path program 2 times [2019-11-15 23:46:17,368 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 23:46:17,368 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [125113667] [2019-11-15 23:46:17,368 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8bdb0122-4966-485c-939a-fd69b106b96e/bin/uautomizer/cvc4 Starting monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 23:46:17,601 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-15 23:46:17,601 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 23:46:17,605 INFO L256 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-15 23:46:17,607 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:46:17,683 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 6 proven. 123 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:46:17,683 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 23:46:17,805 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 6 proven. 123 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:46:17,805 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [125113667] [2019-11-15 23:46:17,806 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 23:46:17,806 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2019-11-15 23:46:17,806 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551371302] [2019-11-15 23:46:17,806 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-11-15 23:46:17,807 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 23:46:17,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-11-15 23:46:17,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2019-11-15 23:46:17,807 INFO L87 Difference]: Start difference. First operand 8688 states and 22311 transitions. Second operand 16 states. [2019-11-15 23:46:18,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:46:18,367 INFO L93 Difference]: Finished difference Result 19035 states and 48154 transitions. [2019-11-15 23:46:18,367 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-11-15 23:46:18,367 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 130 [2019-11-15 23:46:18,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:46:18,398 INFO L225 Difference]: With dead ends: 19035 [2019-11-15 23:46:18,399 INFO L226 Difference]: Without dead ends: 19035 [2019-11-15 23:46:18,399 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=305, Invalid=751, Unknown=0, NotChecked=0, Total=1056 [2019-11-15 23:46:18,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19035 states. [2019-11-15 23:46:18,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19035 to 13737. [2019-11-15 23:46:18,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13737 states. [2019-11-15 23:46:18,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13737 states to 13737 states and 35158 transitions. [2019-11-15 23:46:18,710 INFO L78 Accepts]: Start accepts. Automaton has 13737 states and 35158 transitions. Word has length 130 [2019-11-15 23:46:18,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:46:18,711 INFO L462 AbstractCegarLoop]: Abstraction has 13737 states and 35158 transitions. [2019-11-15 23:46:18,711 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-11-15 23:46:18,711 INFO L276 IsEmpty]: Start isEmpty. Operand 13737 states and 35158 transitions. [2019-11-15 23:46:18,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2019-11-15 23:46:18,732 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:46:18,732 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2019-11-15 23:46:18,944 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 23:46:18,944 INFO L410 AbstractCegarLoop]: === Iteration 9 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:46:18,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:46:18,945 INFO L82 PathProgramCache]: Analyzing trace with hash -2428414, now seen corresponding path program 1 times [2019-11-15 23:46:18,945 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 23:46:18,946 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1102242990] [2019-11-15 23:46:18,946 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8bdb0122-4966-485c-939a-fd69b106b96e/bin/uautomizer/cvc4 Starting monitored process 10 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 23:46:19,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:46:19,334 INFO L256 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 40 conjunts are in the unsatisfiable core [2019-11-15 23:46:19,339 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:46:19,686 WARN L191 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2019-11-15 23:46:19,695 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2019-11-15 23:46:19,695 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 23:46:19,713 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 23:46:19,713 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-15 23:46:19,714 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:28, output treesize:21 [2019-11-15 23:46:19,822 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 23:46:19,822 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 34 [2019-11-15 23:46:19,823 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 23:46:19,829 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 23:46:19,863 INFO L567 ElimStorePlain]: treesize reduction 16, result has 56.8 percent of original size [2019-11-15 23:46:19,863 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-15 23:46:19,863 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:25, output treesize:21 [2019-11-15 23:46:20,177 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-15 23:46:20,183 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 23:46:20,183 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 40 [2019-11-15 23:46:20,183 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 23:46:20,214 INFO L567 ElimStorePlain]: treesize reduction 16, result has 66.7 percent of original size [2019-11-15 23:46:20,214 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-15 23:46:20,215 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:36, output treesize:21 [2019-11-15 23:46:20,873 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 23:46:20,873 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 18 [2019-11-15 23:46:20,873 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 23:46:20,882 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 23:46:20,882 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-15 23:46:20,882 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:22, output treesize:3 [2019-11-15 23:46:21,149 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-15 23:46:21,150 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 23:46:23,972 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 46 [2019-11-15 23:46:23,972 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 3 xjuncts. [2019-11-15 23:46:24,013 INFO L567 ElimStorePlain]: treesize reduction 17, result has 55.3 percent of original size [2019-11-15 23:46:24,013 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 3 xjuncts. [2019-11-15 23:46:24,013 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:26, output treesize:21 [2019-11-15 23:46:24,816 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 6 proven. 41 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-15 23:46:24,817 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1102242990] [2019-11-15 23:46:24,817 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 23:46:24,817 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 27] total 56 [2019-11-15 23:46:24,817 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576553042] [2019-11-15 23:46:24,818 INFO L442 AbstractCegarLoop]: Interpolant automaton has 56 states [2019-11-15 23:46:24,818 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 23:46:24,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2019-11-15 23:46:24,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=2900, Unknown=0, NotChecked=0, Total=3080 [2019-11-15 23:46:24,819 INFO L87 Difference]: Start difference. First operand 13737 states and 35158 transitions. Second operand 56 states. [2019-11-15 23:46:27,616 WARN L191 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2019-11-15 23:46:28,226 WARN L191 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 70 [2019-11-15 23:46:28,971 WARN L191 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 72 [2019-11-15 23:46:29,499 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 74 [2019-11-15 23:46:30,215 WARN L191 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 73 [2019-11-15 23:46:30,729 WARN L191 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 71 [2019-11-15 23:46:31,122 WARN L191 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 59 [2019-11-15 23:46:31,591 WARN L191 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 56 [2019-11-15 23:46:32,013 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 54 [2019-11-15 23:46:32,694 WARN L191 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 59 [2019-11-15 23:46:33,596 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 46 [2019-11-15 23:46:34,431 WARN L191 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 58 [2019-11-15 23:46:35,853 WARN L191 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 66 [2019-11-15 23:46:36,730 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 59 [2019-11-15 23:46:37,084 WARN L191 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2019-11-15 23:46:37,464 WARN L191 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 71 [2019-11-15 23:46:37,752 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 56 [2019-11-15 23:46:38,049 WARN L191 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 59 [2019-11-15 23:46:42,806 WARN L191 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 60 [2019-11-15 23:46:43,076 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 57 [2019-11-15 23:46:43,384 WARN L191 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 61 [2019-11-15 23:46:43,700 WARN L191 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2019-11-15 23:46:46,058 WARN L191 SmtUtils]: Spent 2.16 s on a formula simplification. DAG size of input: 58 DAG size of output: 48 [2019-11-15 23:46:46,636 WARN L191 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 64 [2019-11-15 23:46:46,930 WARN L191 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 59 [2019-11-15 23:46:47,329 WARN L191 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 65 [2019-11-15 23:46:47,771 WARN L191 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 60 [2019-11-15 23:46:48,176 WARN L191 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2019-11-15 23:46:48,521 WARN L191 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 69 [2019-11-15 23:46:48,819 WARN L191 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2019-11-15 23:46:51,182 WARN L191 SmtUtils]: Spent 2.19 s on a formula simplification. DAG size of input: 65 DAG size of output: 55 [2019-11-15 23:46:51,491 WARN L191 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 61 [2019-11-15 23:46:51,789 WARN L191 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 65 [2019-11-15 23:46:52,085 WARN L191 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2019-11-15 23:46:54,738 WARN L191 SmtUtils]: Spent 2.23 s on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2019-11-15 23:46:55,099 WARN L191 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 73 [2019-11-15 23:46:55,506 WARN L191 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 68 [2019-11-15 23:46:55,914 WARN L191 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2019-11-15 23:47:00,719 WARN L191 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2019-11-15 23:47:01,252 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2019-11-15 23:47:01,591 WARN L191 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 69 [2019-11-15 23:47:02,078 WARN L191 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 70 [2019-11-15 23:47:02,579 WARN L191 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2019-11-15 23:47:05,005 WARN L191 SmtUtils]: Spent 2.20 s on a formula simplification. DAG size of input: 64 DAG size of output: 54 [2019-11-15 23:47:05,547 WARN L191 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 56 [2019-11-15 23:47:10,208 WARN L191 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 68 [2019-11-15 23:47:10,672 WARN L191 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2019-11-15 23:47:10,933 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 61 [2019-11-15 23:47:11,264 WARN L191 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2019-11-15 23:47:13,668 WARN L191 SmtUtils]: Spent 2.20 s on a formula simplification. DAG size of input: 68 DAG size of output: 58 [2019-11-15 23:47:14,061 WARN L191 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 68 [2019-11-15 23:47:14,421 WARN L191 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2019-11-15 23:47:17,254 WARN L191 SmtUtils]: Spent 2.20 s on a formula simplification. DAG size of input: 60 DAG size of output: 50 [2019-11-15 23:47:17,559 WARN L191 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2019-11-15 23:47:19,964 WARN L191 SmtUtils]: Spent 2.20 s on a formula simplification. DAG size of input: 64 DAG size of output: 54 [2019-11-15 23:47:20,227 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 57 [2019-11-15 23:47:20,578 WARN L191 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2019-11-15 23:47:21,011 WARN L191 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2019-11-15 23:47:21,403 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 68 [2019-11-15 23:47:23,896 WARN L191 SmtUtils]: Spent 2.27 s on a formula simplification. DAG size of input: 71 DAG size of output: 61 [2019-11-15 23:47:27,317 WARN L191 SmtUtils]: Spent 2.16 s on a formula simplification. DAG size of input: 62 DAG size of output: 52 [2019-11-15 23:47:27,616 WARN L191 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 59 [2019-11-15 23:47:27,980 WARN L191 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 76 [2019-11-15 23:47:28,646 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2019-11-15 23:47:31,034 WARN L191 SmtUtils]: Spent 2.20 s on a formula simplification. DAG size of input: 66 DAG size of output: 56 [2019-11-15 23:47:31,387 WARN L191 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 60 [2019-11-15 23:47:31,705 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 58 [2019-11-15 23:47:32,110 WARN L191 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 68 [2019-11-15 23:47:34,627 WARN L191 SmtUtils]: Spent 2.24 s on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2019-11-15 23:47:37,071 WARN L191 SmtUtils]: Spent 2.23 s on a formula simplification. DAG size of input: 86 DAG size of output: 71 [2019-11-15 23:47:39,736 WARN L191 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2019-11-15 23:47:40,121 WARN L191 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 60 [2019-11-15 23:47:40,492 WARN L191 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 62 [2019-11-15 23:47:40,767 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2019-11-15 23:47:45,299 WARN L191 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 64 [2019-11-15 23:47:45,700 WARN L191 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 64 [2019-11-15 23:47:46,135 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 64 [2019-11-15 23:47:46,640 WARN L191 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 67 [2019-11-15 23:47:47,145 WARN L191 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 68 [2019-11-15 23:47:47,601 WARN L191 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 68 [2019-11-15 23:47:48,099 WARN L191 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 65 [2019-11-15 23:47:48,479 WARN L191 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 71 [2019-11-15 23:47:48,911 WARN L191 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 73 [2019-11-15 23:47:49,265 WARN L191 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 64 [2019-11-15 23:47:49,692 WARN L191 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 63 [2019-11-15 23:47:50,373 WARN L191 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 75 [2019-11-15 23:47:50,778 WARN L191 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 69 [2019-11-15 23:47:51,561 WARN L191 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 71 [2019-11-15 23:47:52,002 WARN L191 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 76 [2019-11-15 23:47:52,452 WARN L191 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 60 [2019-11-15 23:47:53,213 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 81 [2019-11-15 23:47:59,731 WARN L191 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 58 [2019-11-15 23:48:00,415 WARN L191 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 83 [2019-11-15 23:48:05,133 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 55 [2019-11-15 23:48:09,903 WARN L191 SmtUtils]: Spent 2.19 s on a formula simplification. DAG size of input: 70 DAG size of output: 60 [2019-11-15 23:48:11,932 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 51 [2019-11-15 23:48:14,485 WARN L191 SmtUtils]: Spent 2.16 s on a formula simplification. DAG size of input: 66 DAG size of output: 56 [2019-11-15 23:48:14,844 WARN L191 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 63 [2019-11-15 23:48:15,471 WARN L191 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 65 [2019-11-15 23:48:15,848 WARN L191 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2019-11-15 23:48:16,110 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 61 [2019-11-15 23:48:18,716 WARN L191 SmtUtils]: Spent 2.22 s on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2019-11-15 23:48:21,127 WARN L191 SmtUtils]: Spent 2.21 s on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2019-11-15 23:48:24,033 WARN L191 SmtUtils]: Spent 2.16 s on a formula simplification. DAG size of input: 58 DAG size of output: 48 [2019-11-15 23:48:26,406 WARN L191 SmtUtils]: Spent 2.18 s on a formula simplification. DAG size of input: 64 DAG size of output: 54 [2019-11-15 23:48:29,044 WARN L191 SmtUtils]: Spent 2.19 s on a formula simplification. DAG size of input: 66 DAG size of output: 56 [2019-11-15 23:48:29,312 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 48 [2019-11-15 23:48:30,093 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 52 [2019-11-15 23:48:32,709 WARN L191 SmtUtils]: Spent 2.21 s on a formula simplification. DAG size of input: 68 DAG size of output: 58 [2019-11-15 23:48:35,495 WARN L191 SmtUtils]: Spent 2.26 s on a formula simplification. DAG size of input: 73 DAG size of output: 63 [2019-11-15 23:48:36,536 WARN L191 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 61 [2019-11-15 23:48:36,842 WARN L191 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 64 [2019-11-15 23:48:37,184 WARN L191 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 66 [2019-11-15 23:48:37,533 WARN L191 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 65 [2019-11-15 23:48:37,871 WARN L191 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2019-11-15 23:48:38,549 WARN L191 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 70 [2019-11-15 23:48:39,149 WARN L191 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 69 [2019-11-15 23:48:40,100 WARN L191 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 74 [2019-11-15 23:48:40,549 WARN L191 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 65 [2019-11-15 23:48:41,426 WARN L191 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 70 [2019-11-15 23:48:42,387 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 78 [2019-11-15 23:48:42,767 WARN L191 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 68 [2019-11-15 23:48:43,626 WARN L191 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 82 [2019-11-15 23:48:48,074 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2019-11-15 23:48:50,443 WARN L191 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 61 [2019-11-15 23:48:57,455 WARN L191 SmtUtils]: Spent 2.24 s on a formula simplification. DAG size of input: 70 DAG size of output: 60 [2019-11-15 23:48:57,950 WARN L191 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2019-11-15 23:49:01,983 WARN L191 SmtUtils]: Spent 2.22 s on a formula simplification. DAG size of input: 66 DAG size of output: 56 [2019-11-15 23:49:02,327 WARN L191 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2019-11-15 23:49:02,843 WARN L191 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2019-11-15 23:49:03,271 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2019-11-15 23:49:03,741 WARN L191 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 70 [2019-11-15 23:49:04,193 WARN L191 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 60 [2019-11-15 23:49:07,867 WARN L191 SmtUtils]: Spent 2.21 s on a formula simplification. DAG size of input: 68 DAG size of output: 58 [2019-11-15 23:49:08,183 WARN L191 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2019-11-15 23:49:09,598 WARN L191 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 66 [2019-11-15 23:49:09,959 WARN L191 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 72 [2019-11-15 23:49:10,884 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 70 [2019-11-15 23:49:11,326 WARN L191 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 76 [2019-11-15 23:49:12,403 WARN L191 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 74 [2019-11-15 23:49:12,918 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 80 [2019-11-15 23:49:13,388 WARN L191 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 70 [2019-11-15 23:49:13,732 WARN L191 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 76 [2019-11-15 23:49:19,403 WARN L191 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 82 [2019-11-15 23:49:19,856 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 88 [2019-11-15 23:49:22,196 WARN L191 SmtUtils]: Spent 2.17 s on a formula simplification. DAG size of input: 64 DAG size of output: 54 [2019-11-15 23:49:24,739 WARN L191 SmtUtils]: Spent 2.18 s on a formula simplification. DAG size of input: 64 DAG size of output: 54 [2019-11-15 23:49:37,615 WARN L191 SmtUtils]: Spent 2.18 s on a formula simplification. DAG size of input: 60 DAG size of output: 50 [2019-11-15 23:49:40,015 WARN L191 SmtUtils]: Spent 2.17 s on a formula simplification. DAG size of input: 60 DAG size of output: 50 [2019-11-15 23:49:42,509 WARN L191 SmtUtils]: Spent 2.29 s on a formula simplification. DAG size of input: 71 DAG size of output: 61 [2019-11-15 23:49:45,012 WARN L191 SmtUtils]: Spent 2.26 s on a formula simplification. DAG size of input: 71 DAG size of output: 61 [2019-11-15 23:49:47,507 WARN L191 SmtUtils]: Spent 2.24 s on a formula simplification. DAG size of input: 68 DAG size of output: 58 [2019-11-15 23:49:50,712 WARN L191 SmtUtils]: Spent 2.17 s on a formula simplification. DAG size of input: 61 DAG size of output: 51 [2019-11-15 23:49:53,116 WARN L191 SmtUtils]: Spent 2.20 s on a formula simplification. DAG size of input: 62 DAG size of output: 52 [2019-11-15 23:49:53,804 WARN L191 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 60 [2019-11-15 23:49:54,167 WARN L191 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 60 [2019-11-15 23:49:54,760 WARN L191 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 64 [2019-11-15 23:49:55,157 WARN L191 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 64 [2019-11-15 23:49:55,777 WARN L191 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 69 [2019-11-15 23:49:56,220 WARN L191 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 69 [2019-11-15 23:49:56,630 WARN L191 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 65 [2019-11-15 23:49:57,034 WARN L191 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 65 [2019-11-15 23:49:57,994 WARN L191 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 77 [2019-11-15 23:49:58,475 WARN L191 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 77 [2019-11-15 23:50:00,803 WARN L191 SmtUtils]: Spent 2.13 s on a formula simplification. DAG size of input: 51 DAG size of output: 41 [2019-11-15 23:50:07,390 WARN L191 SmtUtils]: Spent 2.10 s on a formula simplification. DAG size of input: 47 DAG size of output: 37 [2019-11-15 23:50:09,993 WARN L191 SmtUtils]: Spent 2.14 s on a formula simplification. DAG size of input: 48 DAG size of output: 38 [2019-11-15 23:50:12,382 WARN L191 SmtUtils]: Spent 2.21 s on a formula simplification. DAG size of input: 67 DAG size of output: 48 [2019-11-15 23:50:12,689 WARN L191 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 51 [2019-11-15 23:50:13,025 WARN L191 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 56 [2019-11-15 23:50:15,403 WARN L191 SmtUtils]: Spent 2.18 s on a formula simplification. DAG size of input: 72 DAG size of output: 53 [2019-11-15 23:50:15,803 WARN L191 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 64 [2019-11-15 23:50:18,468 WARN L191 SmtUtils]: Spent 2.18 s on a formula simplification. DAG size of input: 57 DAG size of output: 47 [2019-11-15 23:50:21,043 WARN L191 SmtUtils]: Spent 2.14 s on a formula simplification. DAG size of input: 53 DAG size of output: 43 [2019-11-15 23:50:23,622 WARN L191 SmtUtils]: Spent 2.14 s on a formula simplification. DAG size of input: 55 DAG size of output: 45 [2019-11-15 23:50:26,006 WARN L191 SmtUtils]: Spent 2.19 s on a formula simplification. DAG size of input: 73 DAG size of output: 54 [2019-11-15 23:50:26,347 WARN L191 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 57 [2019-11-15 23:50:26,755 WARN L191 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 61 [2019-11-15 23:50:27,108 WARN L191 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 57 [2019-11-15 23:50:27,550 WARN L191 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 69 [2019-11-15 23:50:27,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:50:27,565 INFO L93 Difference]: Finished difference Result 53780 states and 136053 transitions. [2019-11-15 23:50:27,565 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 277 states. [2019-11-15 23:50:27,566 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 137 [2019-11-15 23:50:27,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:50:27,622 INFO L225 Difference]: With dead ends: 53780 [2019-11-15 23:50:27,622 INFO L226 Difference]: Without dead ends: 52889 [2019-11-15 23:50:27,635 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 696 GetRequests, 357 SyntacticMatches, 12 SemanticMatches, 327 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45454 ImplicationChecksByTransitivity, 175.2s TimeCoverageRelationStatistics Valid=9811, Invalid=98100, Unknown=1, NotChecked=0, Total=107912 [2019-11-15 23:50:27,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52889 states. [2019-11-15 23:50:28,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52889 to 18310. [2019-11-15 23:50:28,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18310 states. [2019-11-15 23:50:28,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18310 states to 18310 states and 47342 transitions. [2019-11-15 23:50:28,435 INFO L78 Accepts]: Start accepts. Automaton has 18310 states and 47342 transitions. Word has length 137 [2019-11-15 23:50:28,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:50:28,436 INFO L462 AbstractCegarLoop]: Abstraction has 18310 states and 47342 transitions. [2019-11-15 23:50:28,436 INFO L463 AbstractCegarLoop]: Interpolant automaton has 56 states. [2019-11-15 23:50:28,436 INFO L276 IsEmpty]: Start isEmpty. Operand 18310 states and 47342 transitions. [2019-11-15 23:50:28,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2019-11-15 23:50:28,467 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:50:28,468 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:50:28,674 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 23:50:28,675 INFO L410 AbstractCegarLoop]: === Iteration 10 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:50:28,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:50:28,675 INFO L82 PathProgramCache]: Analyzing trace with hash -1901793298, now seen corresponding path program 1 times [2019-11-15 23:50:28,676 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 23:50:28,676 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1111387708] [2019-11-15 23:50:28,676 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8bdb0122-4966-485c-939a-fd69b106b96e/bin/uautomizer/cvc4 Starting monitored process 11 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 23:50:28,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:50:28,817 INFO L256 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-15 23:50:28,819 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:50:28,884 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 4 proven. 66 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-11-15 23:50:28,885 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 23:50:29,032 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 4 proven. 66 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-11-15 23:50:29,032 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1111387708] [2019-11-15 23:50:29,032 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 23:50:29,032 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2019-11-15 23:50:29,032 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755975832] [2019-11-15 23:50:29,033 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-11-15 23:50:29,033 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 23:50:29,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-11-15 23:50:29,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2019-11-15 23:50:29,033 INFO L87 Difference]: Start difference. First operand 18310 states and 47342 transitions. Second operand 16 states. [2019-11-15 23:50:29,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:50:29,676 INFO L93 Difference]: Finished difference Result 32305 states and 82151 transitions. [2019-11-15 23:50:29,677 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2019-11-15 23:50:29,677 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 158 [2019-11-15 23:50:29,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:50:29,710 INFO L225 Difference]: With dead ends: 32305 [2019-11-15 23:50:29,710 INFO L226 Difference]: Without dead ends: 31444 [2019-11-15 23:50:29,711 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 300 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 288 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=315, Invalid=1167, Unknown=0, NotChecked=0, Total=1482 [2019-11-15 23:50:29,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31444 states. [2019-11-15 23:50:30,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31444 to 18345. [2019-11-15 23:50:30,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18345 states. [2019-11-15 23:50:30,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18345 states to 18345 states and 47540 transitions. [2019-11-15 23:50:30,056 INFO L78 Accepts]: Start accepts. Automaton has 18345 states and 47540 transitions. Word has length 158 [2019-11-15 23:50:30,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:50:30,056 INFO L462 AbstractCegarLoop]: Abstraction has 18345 states and 47540 transitions. [2019-11-15 23:50:30,056 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-11-15 23:50:30,056 INFO L276 IsEmpty]: Start isEmpty. Operand 18345 states and 47540 transitions. [2019-11-15 23:50:30,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2019-11-15 23:50:30,080 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:50:30,080 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:50:30,282 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 23:50:30,283 INFO L410 AbstractCegarLoop]: === Iteration 11 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:50:30,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:50:30,283 INFO L82 PathProgramCache]: Analyzing trace with hash -715346116, now seen corresponding path program 2 times [2019-11-15 23:50:30,283 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 23:50:30,284 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [96138299] [2019-11-15 23:50:30,284 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8bdb0122-4966-485c-939a-fd69b106b96e/bin/uautomizer/cvc4 Starting monitored process 12 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 23:50:30,546 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-15 23:50:30,547 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 23:50:30,551 INFO L256 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-15 23:50:30,553 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:50:30,640 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 8 proven. 196 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-11-15 23:50:30,640 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 23:50:30,820 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 8 proven. 196 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-11-15 23:50:30,820 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [96138299] [2019-11-15 23:50:30,820 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 23:50:30,820 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2019-11-15 23:50:30,821 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591448881] [2019-11-15 23:50:30,821 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-11-15 23:50:30,821 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 23:50:30,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-11-15 23:50:30,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2019-11-15 23:50:30,822 INFO L87 Difference]: Start difference. First operand 18345 states and 47540 transitions. Second operand 18 states. [2019-11-15 23:50:31,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:50:31,743 INFO L93 Difference]: Finished difference Result 40470 states and 102587 transitions. [2019-11-15 23:50:31,744 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2019-11-15 23:50:31,744 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 189 [2019-11-15 23:50:31,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:50:31,786 INFO L225 Difference]: With dead ends: 40470 [2019-11-15 23:50:31,786 INFO L226 Difference]: Without dead ends: 40470 [2019-11-15 23:50:31,786 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 360 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 564 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=527, Invalid=1923, Unknown=0, NotChecked=0, Total=2450 [2019-11-15 23:50:31,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40470 states. [2019-11-15 23:50:32,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40470 to 23052. [2019-11-15 23:50:32,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23052 states. [2019-11-15 23:50:32,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23052 states to 23052 states and 59513 transitions. [2019-11-15 23:50:32,533 INFO L78 Accepts]: Start accepts. Automaton has 23052 states and 59513 transitions. Word has length 189 [2019-11-15 23:50:32,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:50:32,534 INFO L462 AbstractCegarLoop]: Abstraction has 23052 states and 59513 transitions. [2019-11-15 23:50:32,534 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-11-15 23:50:32,534 INFO L276 IsEmpty]: Start isEmpty. Operand 23052 states and 59513 transitions. [2019-11-15 23:50:32,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2019-11-15 23:50:32,553 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:50:32,553 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:50:32,758 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 23:50:32,759 INFO L410 AbstractCegarLoop]: === Iteration 12 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:50:32,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:50:32,759 INFO L82 PathProgramCache]: Analyzing trace with hash -2003379504, now seen corresponding path program 3 times [2019-11-15 23:50:32,759 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 23:50:32,759 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1338332568] [2019-11-15 23:50:32,759 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8bdb0122-4966-485c-939a-fd69b106b96e/bin/uautomizer/cvc4 Starting monitored process 13 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 23:50:33,163 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2019-11-15 23:50:33,163 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 23:50:33,168 INFO L256 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-15 23:50:33,171 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:50:33,255 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 8 proven. 196 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-11-15 23:50:33,255 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 23:50:33,420 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 8 proven. 196 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-11-15 23:50:33,420 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1338332568] [2019-11-15 23:50:33,421 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 23:50:33,421 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2019-11-15 23:50:33,421 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024714893] [2019-11-15 23:50:33,421 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-11-15 23:50:33,421 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 23:50:33,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-11-15 23:50:33,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2019-11-15 23:50:33,422 INFO L87 Difference]: Start difference. First operand 23052 states and 59513 transitions. Second operand 18 states. [2019-11-15 23:50:34,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:50:34,332 INFO L93 Difference]: Finished difference Result 53670 states and 136199 transitions. [2019-11-15 23:50:34,333 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2019-11-15 23:50:34,333 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 189 [2019-11-15 23:50:34,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:50:34,394 INFO L225 Difference]: With dead ends: 53670 [2019-11-15 23:50:34,395 INFO L226 Difference]: Without dead ends: 53670 [2019-11-15 23:50:34,396 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 360 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 452 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=493, Invalid=1763, Unknown=0, NotChecked=0, Total=2256 [2019-11-15 23:50:34,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53670 states. [2019-11-15 23:50:34,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53670 to 32568. [2019-11-15 23:50:34,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32568 states. [2019-11-15 23:50:34,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32568 states to 32568 states and 84984 transitions. [2019-11-15 23:50:34,998 INFO L78 Accepts]: Start accepts. Automaton has 32568 states and 84984 transitions. Word has length 189 [2019-11-15 23:50:34,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:50:34,998 INFO L462 AbstractCegarLoop]: Abstraction has 32568 states and 84984 transitions. [2019-11-15 23:50:34,998 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-11-15 23:50:34,999 INFO L276 IsEmpty]: Start isEmpty. Operand 32568 states and 84984 transitions. [2019-11-15 23:50:35,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2019-11-15 23:50:35,019 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:50:35,019 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:50:35,223 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 23:50:35,223 INFO L410 AbstractCegarLoop]: === Iteration 13 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:50:35,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:50:35,223 INFO L82 PathProgramCache]: Analyzing trace with hash 2146363160, now seen corresponding path program 4 times [2019-11-15 23:50:35,224 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 23:50:35,224 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1275116161] [2019-11-15 23:50:35,224 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8bdb0122-4966-485c-939a-fd69b106b96e/bin/uautomizer/cvc4 Starting monitored process 14 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 23:50:35,412 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-15 23:50:35,412 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 23:50:35,415 INFO L256 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-15 23:50:35,417 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:50:35,500 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 8 proven. 196 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-11-15 23:50:35,501 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 23:50:35,690 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 8 proven. 196 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-11-15 23:50:35,690 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1275116161] [2019-11-15 23:50:35,690 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 23:50:35,691 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2019-11-15 23:50:35,691 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701702234] [2019-11-15 23:50:35,691 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-11-15 23:50:35,692 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 23:50:35,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-11-15 23:50:35,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2019-11-15 23:50:35,692 INFO L87 Difference]: Start difference. First operand 32568 states and 84984 transitions. Second operand 18 states. [2019-11-15 23:50:36,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:50:36,833 INFO L93 Difference]: Finished difference Result 58623 states and 150084 transitions. [2019-11-15 23:50:36,833 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2019-11-15 23:50:36,833 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 189 [2019-11-15 23:50:36,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:50:36,902 INFO L225 Difference]: With dead ends: 58623 [2019-11-15 23:50:36,903 INFO L226 Difference]: Without dead ends: 58623 [2019-11-15 23:50:36,903 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 359 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 339 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=423, Invalid=1469, Unknown=0, NotChecked=0, Total=1892 [2019-11-15 23:50:36,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58623 states. [2019-11-15 23:50:37,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58623 to 41322. [2019-11-15 23:50:37,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41322 states. [2019-11-15 23:50:37,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41322 states to 41322 states and 108829 transitions. [2019-11-15 23:50:37,586 INFO L78 Accepts]: Start accepts. Automaton has 41322 states and 108829 transitions. Word has length 189 [2019-11-15 23:50:37,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:50:37,587 INFO L462 AbstractCegarLoop]: Abstraction has 41322 states and 108829 transitions. [2019-11-15 23:50:37,587 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-11-15 23:50:37,587 INFO L276 IsEmpty]: Start isEmpty. Operand 41322 states and 108829 transitions. [2019-11-15 23:50:37,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2019-11-15 23:50:37,616 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:50:37,616 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:50:37,819 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 23:50:37,820 INFO L410 AbstractCegarLoop]: === Iteration 14 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:50:37,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:50:37,820 INFO L82 PathProgramCache]: Analyzing trace with hash -1499211482, now seen corresponding path program 2 times [2019-11-15 23:50:37,820 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 23:50:37,820 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1050981993] [2019-11-15 23:50:37,821 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8bdb0122-4966-485c-939a-fd69b106b96e/bin/uautomizer/cvc4 Starting monitored process 15 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 23:50:38,212 ERROR L273 tionRefinementEngine]: Caught known exception: Array theory solver does not yet support write-chains connecting two different constant arrays [2019-11-15 23:50:38,213 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2088969474] [2019-11-15 23:50:38,213 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8bdb0122-4966-485c-939a-fd69b106b96e/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 [2019-11-15 23:50:38,402 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-15 23:50:38,402 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 23:50:38,406 INFO L256 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 51 conjunts are in the unsatisfiable core [2019-11-15 23:50:38,411 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:50:38,690 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2019-11-15 23:50:38,691 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 23:50:38,719 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 23:50:38,719 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-15 23:50:38,720 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:28, output treesize:21 [2019-11-15 23:50:38,934 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 23:50:38,934 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 34 [2019-11-15 23:50:38,935 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 23:50:38,939 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 23:50:38,989 INFO L567 ElimStorePlain]: treesize reduction 16, result has 56.8 percent of original size [2019-11-15 23:50:38,989 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-15 23:50:38,989 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:25, output treesize:21 [2019-11-15 23:50:39,308 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-15 23:50:39,314 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 23:50:39,314 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 40 [2019-11-15 23:50:39,315 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 23:50:39,349 INFO L567 ElimStorePlain]: treesize reduction 16, result has 66.7 percent of original size [2019-11-15 23:50:39,349 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-15 23:50:39,350 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:36, output treesize:21 [2019-11-15 23:50:39,730 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-15 23:50:39,735 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 23:50:39,736 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 40 [2019-11-15 23:50:39,736 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 23:50:39,768 INFO L567 ElimStorePlain]: treesize reduction 12, result has 72.7 percent of original size [2019-11-15 23:50:39,768 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-15 23:50:39,768 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:36, output treesize:21 [2019-11-15 23:50:40,708 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 23:50:40,708 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 18 [2019-11-15 23:50:40,708 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 23:50:40,717 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 23:50:40,718 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-15 23:50:40,718 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:22, output treesize:3 [2019-11-15 23:50:41,137 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 151 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-15 23:50:41,138 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 23:50:46,720 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 46 [2019-11-15 23:50:46,721 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 3 xjuncts. [2019-11-15 23:50:46,775 INFO L567 ElimStorePlain]: treesize reduction 17, result has 55.3 percent of original size [2019-11-15 23:50:46,775 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 3 xjuncts. [2019-11-15 23:50:46,775 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:26, output treesize:21 [2019-11-15 23:50:47,842 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 12 proven. 139 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-15 23:50:47,843 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1050981993] [2019-11-15 23:50:48,043 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:50:48,044 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalStateException: Do not try to interpolate when trace is feasible at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:328) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.generateProof(TraceAbstractionRefinementEngine.java:184) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:128) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-11-15 23:50:48,048 INFO L168 Benchmark]: Toolchain (without parser) took 316456.97 ms. Allocated memory was 1.0 GB in the beginning and 2.5 GB in the end (delta: 1.5 GB). Free memory was 945.6 MB in the beginning and 1.6 GB in the end (delta: -656.1 MB). Peak memory consumption was 830.2 MB. Max. memory is 11.5 GB. [2019-11-15 23:50:48,049 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 977.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 23:50:48,049 INFO L168 Benchmark]: CACSL2BoogieTranslator took 885.80 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 166.7 MB). Free memory was 945.6 MB in the beginning and 1.1 GB in the end (delta: -158.7 MB). Peak memory consumption was 23.9 MB. Max. memory is 11.5 GB. [2019-11-15 23:50:48,049 INFO L168 Benchmark]: Boogie Procedure Inliner took 83.68 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. [2019-11-15 23:50:48,050 INFO L168 Benchmark]: Boogie Preprocessor took 83.69 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: 6.4 MB). Peak memory consumption was 6.4 MB. Max. memory is 11.5 GB. [2019-11-15 23:50:48,050 INFO L168 Benchmark]: RCFGBuilder took 618.69 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: 30.1 MB). Peak memory consumption was 30.1 MB. Max. memory is 11.5 GB. [2019-11-15 23:50:48,051 INFO L168 Benchmark]: TraceAbstraction took 314780.48 ms. Allocated memory was 1.2 GB in the beginning and 2.5 GB in the end (delta: 1.3 GB). Free memory was 1.1 GB in the beginning and 1.6 GB in the end (delta: -534.0 MB). Peak memory consumption was 785.6 MB. Max. memory is 11.5 GB. [2019-11-15 23:50:48,052 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 977.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 885.80 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 166.7 MB). Free memory was 945.6 MB in the beginning and 1.1 GB in the end (delta: -158.7 MB). Peak memory consumption was 23.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 83.68 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. * Boogie Preprocessor took 83.69 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: 6.4 MB). Peak memory consumption was 6.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 618.69 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: 30.1 MB). Peak memory consumption was 30.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 314780.48 ms. Allocated memory was 1.2 GB in the beginning and 2.5 GB in the end (delta: 1.3 GB). Free memory was 1.1 GB in the beginning and 1.6 GB in the end (delta: -534.0 MB). Peak memory consumption was 785.6 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: IllegalStateException: Do not try to interpolate when trace is feasible de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalStateException: Do not try to interpolate when trace is feasible : de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:328) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...