./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive-simple/id_o100.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96cd69c9-6614-4431-b5ea-e00d2990d144/bin/uautomizer-ZXIjhQolGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96cd69c9-6614-4431-b5ea-e00d2990d144/bin/uautomizer-ZXIjhQolGL/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96cd69c9-6614-4431-b5ea-e00d2990d144/bin/uautomizer-ZXIjhQolGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96cd69c9-6614-4431-b5ea-e00d2990d144/bin/uautomizer-ZXIjhQolGL/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive-simple/id_o100.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96cd69c9-6614-4431-b5ea-e00d2990d144/bin/uautomizer-ZXIjhQolGL/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96cd69c9-6614-4431-b5ea-e00d2990d144/bin/uautomizer-ZXIjhQolGL --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a9f3959f9eef72d5f7423aa1eb092ce144135b5ae33d5bb31037a0c7e99b1293 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 05:30:12,014 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 05:30:12,017 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 05:30:12,067 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 05:30:12,067 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 05:30:12,069 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 05:30:12,071 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 05:30:12,073 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 05:30:12,075 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 05:30:12,077 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 05:30:12,078 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 05:30:12,079 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 05:30:12,080 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 05:30:12,081 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 05:30:12,083 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 05:30:12,085 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 05:30:12,086 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 05:30:12,087 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 05:30:12,089 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 05:30:12,092 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 05:30:12,100 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 05:30:12,102 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 05:30:12,103 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 05:30:12,104 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 05:30:12,108 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 05:30:12,109 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 05:30:12,109 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 05:30:12,110 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 05:30:12,111 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 05:30:12,112 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 05:30:12,113 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 05:30:12,114 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 05:30:12,115 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 05:30:12,115 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 05:30:12,117 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 05:30:12,117 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 05:30:12,118 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 05:30:12,119 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 05:30:12,119 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 05:30:12,120 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 05:30:12,121 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 05:30:12,122 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96cd69c9-6614-4431-b5ea-e00d2990d144/bin/uautomizer-ZXIjhQolGL/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-19 05:30:12,153 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 05:30:12,153 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 05:30:12,153 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-19 05:30:12,153 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-19 05:30:12,154 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 05:30:12,154 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 05:30:12,155 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 05:30:12,155 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 05:30:12,155 INFO L138 SettingsManager]: * Use SBE=true [2021-11-19 05:30:12,156 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 05:30:12,156 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 05:30:12,156 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 05:30:12,156 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 05:30:12,157 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 05:30:12,157 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 05:30:12,157 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 05:30:12,157 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 05:30:12,157 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 05:30:12,158 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 05:30:12,158 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 05:30:12,158 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 05:30:12,158 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 05:30:12,158 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 05:30:12,159 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 05:30:12,159 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 05:30:12,159 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 05:30:12,159 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 05:30:12,160 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 05:30:12,160 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-19 05:30:12,160 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 05:30:12,160 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-19 05:30:12,160 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-19 05:30:12,161 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 05:30:12,161 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 05:30:12,161 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96cd69c9-6614-4431-b5ea-e00d2990d144/bin/uautomizer-ZXIjhQolGL/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96cd69c9-6614-4431-b5ea-e00d2990d144/bin/uautomizer-ZXIjhQolGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a9f3959f9eef72d5f7423aa1eb092ce144135b5ae33d5bb31037a0c7e99b1293 [2021-11-19 05:30:12,460 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 05:30:12,511 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 05:30:12,513 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 05:30:12,514 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 05:30:12,515 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 05:30:12,517 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96cd69c9-6614-4431-b5ea-e00d2990d144/bin/uautomizer-ZXIjhQolGL/../../sv-benchmarks/c/recursive-simple/id_o100.c [2021-11-19 05:30:12,595 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96cd69c9-6614-4431-b5ea-e00d2990d144/bin/uautomizer-ZXIjhQolGL/data/09195f6ac/a542fb5c164149f09dc42f9103865a72/FLAG686c71b45 [2021-11-19 05:30:13,021 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 05:30:13,021 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96cd69c9-6614-4431-b5ea-e00d2990d144/sv-benchmarks/c/recursive-simple/id_o100.c [2021-11-19 05:30:13,027 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96cd69c9-6614-4431-b5ea-e00d2990d144/bin/uautomizer-ZXIjhQolGL/data/09195f6ac/a542fb5c164149f09dc42f9103865a72/FLAG686c71b45 [2021-11-19 05:30:13,433 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96cd69c9-6614-4431-b5ea-e00d2990d144/bin/uautomizer-ZXIjhQolGL/data/09195f6ac/a542fb5c164149f09dc42f9103865a72 [2021-11-19 05:30:13,435 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 05:30:13,437 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 05:30:13,439 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 05:30:13,439 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 05:30:13,442 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 05:30:13,443 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:30:13" (1/1) ... [2021-11-19 05:30:13,444 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26972416 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:30:13, skipping insertion in model container [2021-11-19 05:30:13,444 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:30:13" (1/1) ... [2021-11-19 05:30:13,451 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 05:30:13,464 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 05:30:13,652 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96cd69c9-6614-4431-b5ea-e00d2990d144/sv-benchmarks/c/recursive-simple/id_o100.c[518,531] [2021-11-19 05:30:13,655 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 05:30:13,663 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 05:30:13,681 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96cd69c9-6614-4431-b5ea-e00d2990d144/sv-benchmarks/c/recursive-simple/id_o100.c[518,531] [2021-11-19 05:30:13,682 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 05:30:13,699 INFO L208 MainTranslator]: Completed translation [2021-11-19 05:30:13,699 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:30:13 WrapperNode [2021-11-19 05:30:13,700 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 05:30:13,702 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 05:30:13,702 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 05:30:13,702 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 05:30:13,711 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:30:13" (1/1) ... [2021-11-19 05:30:13,722 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:30:13" (1/1) ... [2021-11-19 05:30:13,742 INFO L137 Inliner]: procedures = 13, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 19 [2021-11-19 05:30:13,742 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 05:30:13,743 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 05:30:13,744 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 05:30:13,744 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 05:30:13,760 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:30:13" (1/1) ... [2021-11-19 05:30:13,760 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:30:13" (1/1) ... [2021-11-19 05:30:13,762 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:30:13" (1/1) ... [2021-11-19 05:30:13,763 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:30:13" (1/1) ... [2021-11-19 05:30:13,767 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:30:13" (1/1) ... [2021-11-19 05:30:13,768 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:30:13" (1/1) ... [2021-11-19 05:30:13,770 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:30:13" (1/1) ... [2021-11-19 05:30:13,777 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 05:30:13,778 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 05:30:13,778 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 05:30:13,778 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 05:30:13,779 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:30:13" (1/1) ... [2021-11-19 05:30:13,786 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 05:30:13,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96cd69c9-6614-4431-b5ea-e00d2990d144/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:30:13,809 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96cd69c9-6614-4431-b5ea-e00d2990d144/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 05:30:13,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96cd69c9-6614-4431-b5ea-e00d2990d144/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 05:30:13,847 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 05:30:13,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 05:30:13,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 05:30:13,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-19 05:30:13,848 INFO L130 BoogieDeclarations]: Found specification of procedure id [2021-11-19 05:30:13,848 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2021-11-19 05:30:13,906 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 05:30:13,908 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 05:30:14,009 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 05:30:14,016 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 05:30:14,016 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-19 05:30:14,018 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:30:14 BoogieIcfgContainer [2021-11-19 05:30:14,018 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 05:30:14,020 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 05:30:14,020 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 05:30:14,024 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 05:30:14,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:30:13" (1/3) ... [2021-11-19 05:30:14,025 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@668a32a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:30:14, skipping insertion in model container [2021-11-19 05:30:14,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:30:13" (2/3) ... [2021-11-19 05:30:14,026 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@668a32a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:30:14, skipping insertion in model container [2021-11-19 05:30:14,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:30:14" (3/3) ... [2021-11-19 05:30:14,028 INFO L111 eAbstractionObserver]: Analyzing ICFG id_o100.c [2021-11-19 05:30:14,034 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 05:30:14,034 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 05:30:14,096 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 05:30:14,105 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-19 05:30:14,106 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 05:30:14,137 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-19 05:30:14,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-19 05:30:14,143 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:30:14,143 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:30:14,144 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:30:14,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:30:14,149 INFO L85 PathProgramCache]: Analyzing trace with hash -358017204, now seen corresponding path program 1 times [2021-11-19 05:30:14,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:30:14,160 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185843066] [2021-11-19 05:30:14,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:30:14,161 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:30:14,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:30:14,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 05:30:14,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:30:14,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:30:14,393 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:30:14,394 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185843066] [2021-11-19 05:30:14,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185843066] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:30:14,395 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:30:14,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-19 05:30:14,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720923182] [2021-11-19 05:30:14,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:30:14,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 05:30:14,403 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:30:14,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 05:30:14,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 05:30:14,435 INFO L87 Difference]: Start difference. First operand has 16 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:30:14,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:30:14,473 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2021-11-19 05:30:14,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 05:30:14,476 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2021-11-19 05:30:14,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:30:14,519 INFO L225 Difference]: With dead ends: 28 [2021-11-19 05:30:14,519 INFO L226 Difference]: Without dead ends: 15 [2021-11-19 05:30:14,559 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 05:30:14,566 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 3 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 05:30:14,567 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 55 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 05:30:14,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-11-19 05:30:14,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-11-19 05:30:14,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.1) internal successors, (11), 11 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-19 05:30:14,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2021-11-19 05:30:14,604 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 10 [2021-11-19 05:30:14,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:30:14,605 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2021-11-19 05:30:14,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:30:14,605 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2021-11-19 05:30:14,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-19 05:30:14,607 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:30:14,607 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:30:14,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-19 05:30:14,608 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:30:14,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:30:14,609 INFO L85 PathProgramCache]: Analyzing trace with hash 679465686, now seen corresponding path program 1 times [2021-11-19 05:30:14,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:30:14,609 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211286470] [2021-11-19 05:30:14,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:30:14,610 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:30:14,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:30:14,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 05:30:14,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:30:14,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 05:30:14,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:30:14,851 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 05:30:14,852 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:30:14,852 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211286470] [2021-11-19 05:30:14,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211286470] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 05:30:14,852 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [949684364] [2021-11-19 05:30:14,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:30:14,853 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:30:14,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96cd69c9-6614-4431-b5ea-e00d2990d144/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:30:14,863 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96cd69c9-6614-4431-b5ea-e00d2990d144/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 05:30:14,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96cd69c9-6614-4431-b5ea-e00d2990d144/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-19 05:30:14,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:30:14,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-19 05:30:14,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:30:15,093 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 05:30:15,093 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:30:15,240 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 05:30:15,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [949684364] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 05:30:15,240 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 05:30:15,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2021-11-19 05:30:15,241 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447795516] [2021-11-19 05:30:15,242 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 05:30:15,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-19 05:30:15,243 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:30:15,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-19 05:30:15,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-11-19 05:30:15,244 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand has 13 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 9 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-19 05:30:15,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:30:15,308 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2021-11-19 05:30:15,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-19 05:30:15,310 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 9 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) Word has length 16 [2021-11-19 05:30:15,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:30:15,311 INFO L225 Difference]: With dead ends: 27 [2021-11-19 05:30:15,311 INFO L226 Difference]: Without dead ends: 21 [2021-11-19 05:30:15,312 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-11-19 05:30:15,313 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 05:30:15,314 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 101 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 05:30:15,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-11-19 05:30:15,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-11-19 05:30:15,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 15 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-19 05:30:15,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2021-11-19 05:30:15,328 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 16 [2021-11-19 05:30:15,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:30:15,329 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2021-11-19 05:30:15,330 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 9 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-19 05:30:15,330 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2021-11-19 05:30:15,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-19 05:30:15,331 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:30:15,332 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:30:15,367 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96cd69c9-6614-4431-b5ea-e00d2990d144/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-19 05:30:15,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96cd69c9-6614-4431-b5ea-e00d2990d144/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:30:15,554 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:30:15,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:30:15,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1769866774, now seen corresponding path program 2 times [2021-11-19 05:30:15,555 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:30:15,555 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026475612] [2021-11-19 05:30:15,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:30:15,555 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:30:15,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:30:15,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 05:30:15,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:30:15,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 05:30:15,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:30:15,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 05:30:15,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:30:15,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 05:30:15,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:30:15,910 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-19 05:30:15,911 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:30:15,911 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026475612] [2021-11-19 05:30:15,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026475612] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 05:30:15,914 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1125934969] [2021-11-19 05:30:15,916 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 05:30:15,916 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:30:15,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96cd69c9-6614-4431-b5ea-e00d2990d144/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:30:15,922 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96cd69c9-6614-4431-b5ea-e00d2990d144/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 05:30:15,937 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96cd69c9-6614-4431-b5ea-e00d2990d144/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-19 05:30:15,974 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 05:30:15,974 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 05:30:15,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-19 05:30:15,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:30:16,204 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-19 05:30:16,204 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:30:16,628 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-19 05:30:16,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1125934969] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 05:30:16,628 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 05:30:16,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 21 [2021-11-19 05:30:16,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114855777] [2021-11-19 05:30:16,630 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 05:30:16,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-19 05:30:16,631 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:30:16,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-19 05:30:16,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=352, Unknown=0, NotChecked=0, Total=420 [2021-11-19 05:30:16,633 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand has 21 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 13 states have internal predecessors, (27), 1 states have call successors, (2), 1 states have call predecessors, (2), 8 states have return successors, (8), 8 states have call predecessors, (8), 1 states have call successors, (8) [2021-11-19 05:30:16,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:30:16,911 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2021-11-19 05:30:16,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-19 05:30:16,913 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 13 states have internal predecessors, (27), 1 states have call successors, (2), 1 states have call predecessors, (2), 8 states have return successors, (8), 8 states have call predecessors, (8), 1 states have call successors, (8) Word has length 28 [2021-11-19 05:30:16,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:30:16,914 INFO L225 Difference]: With dead ends: 39 [2021-11-19 05:30:16,914 INFO L226 Difference]: Without dead ends: 33 [2021-11-19 05:30:16,915 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 53 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=102, Invalid=498, Unknown=0, NotChecked=0, Total=600 [2021-11-19 05:30:16,917 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 05:30:16,917 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 203 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 05:30:16,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-11-19 05:30:16,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2021-11-19 05:30:16,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 22 states have (on average 1.0454545454545454) internal successors, (23), 23 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 8 states have return successors, (9), 8 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-19 05:30:16,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2021-11-19 05:30:16,925 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 28 [2021-11-19 05:30:16,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:30:16,926 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2021-11-19 05:30:16,926 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 13 states have internal predecessors, (27), 1 states have call successors, (2), 1 states have call predecessors, (2), 8 states have return successors, (8), 8 states have call predecessors, (8), 1 states have call successors, (8) [2021-11-19 05:30:16,926 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2021-11-19 05:30:16,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-19 05:30:16,928 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:30:16,928 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:30:16,969 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96cd69c9-6614-4431-b5ea-e00d2990d144/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-19 05:30:17,153 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96cd69c9-6614-4431-b5ea-e00d2990d144/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:30:17,154 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:30:17,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:30:17,155 INFO L85 PathProgramCache]: Analyzing trace with hash -626238314, now seen corresponding path program 3 times [2021-11-19 05:30:17,155 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:30:17,155 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441864341] [2021-11-19 05:30:17,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:30:17,155 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:30:17,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:30:17,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 05:30:17,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:30:17,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 05:30:17,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:30:17,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 05:30:17,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:30:17,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 05:30:17,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:30:17,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 05:30:17,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:30:17,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 05:30:17,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:30:17,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 05:30:17,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:30:17,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 05:30:17,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:30:17,731 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2021-11-19 05:30:17,732 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:30:17,733 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441864341] [2021-11-19 05:30:17,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441864341] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 05:30:17,735 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1325969169] [2021-11-19 05:30:17,735 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 05:30:17,735 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:30:17,735 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96cd69c9-6614-4431-b5ea-e00d2990d144/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:30:17,738 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96cd69c9-6614-4431-b5ea-e00d2990d144/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 05:30:17,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96cd69c9-6614-4431-b5ea-e00d2990d144/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-19 05:30:17,830 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-19 05:30:17,830 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 05:30:17,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 36 conjunts are in the unsatisfiable core [2021-11-19 05:30:17,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:30:18,101 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2021-11-19 05:30:18,102 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:30:19,204 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2021-11-19 05:30:19,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1325969169] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 05:30:19,205 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 05:30:19,205 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 37 [2021-11-19 05:30:19,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011464760] [2021-11-19 05:30:19,205 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 05:30:19,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2021-11-19 05:30:19,206 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:30:19,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-11-19 05:30:19,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=1144, Unknown=0, NotChecked=0, Total=1332 [2021-11-19 05:30:19,209 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand has 37 states, 37 states have (on average 1.162162162162162) internal successors, (43), 21 states have internal predecessors, (43), 1 states have call successors, (2), 1 states have call predecessors, (2), 16 states have return successors, (16), 16 states have call predecessors, (16), 1 states have call successors, (16) [2021-11-19 05:30:22,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:30:22,748 INFO L93 Difference]: Finished difference Result 63 states and 71 transitions. [2021-11-19 05:30:22,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-19 05:30:22,749 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.162162162162162) internal successors, (43), 21 states have internal predecessors, (43), 1 states have call successors, (2), 1 states have call predecessors, (2), 16 states have return successors, (16), 16 states have call predecessors, (16), 1 states have call successors, (16) Word has length 52 [2021-11-19 05:30:22,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:30:22,751 INFO L225 Difference]: With dead ends: 63 [2021-11-19 05:30:22,751 INFO L226 Difference]: Without dead ends: 57 [2021-11-19 05:30:22,753 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 101 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=386, Invalid=1966, Unknown=0, NotChecked=0, Total=2352 [2021-11-19 05:30:22,754 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 05:30:22,755 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 425 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 05:30:22,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-11-19 05:30:22,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2021-11-19 05:30:22,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 38 states have (on average 1.0263157894736843) internal successors, (39), 39 states have internal predecessors, (39), 2 states have call successors, (2), 1 states have call predecessors, (2), 16 states have return successors, (17), 16 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-19 05:30:22,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 58 transitions. [2021-11-19 05:30:22,776 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 58 transitions. Word has length 52 [2021-11-19 05:30:22,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:30:22,777 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 58 transitions. [2021-11-19 05:30:22,777 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 1.162162162162162) internal successors, (43), 21 states have internal predecessors, (43), 1 states have call successors, (2), 1 states have call predecessors, (2), 16 states have return successors, (16), 16 states have call predecessors, (16), 1 states have call successors, (16) [2021-11-19 05:30:22,777 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 58 transitions. [2021-11-19 05:30:22,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-19 05:30:22,781 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:30:22,781 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:30:22,809 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96cd69c9-6614-4431-b5ea-e00d2990d144/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-19 05:30:23,005 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96cd69c9-6614-4431-b5ea-e00d2990d144/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:30:23,006 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:30:23,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:30:23,006 INFO L85 PathProgramCache]: Analyzing trace with hash 415287702, now seen corresponding path program 4 times [2021-11-19 05:30:23,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:30:23,007 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594573001] [2021-11-19 05:30:23,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:30:23,007 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:30:23,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:30:23,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 05:30:23,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:30:23,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 05:30:23,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:30:23,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 05:30:23,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:30:23,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 05:30:23,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:30:23,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 05:30:23,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:30:23,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 05:30:23,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:30:23,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 05:30:23,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:30:23,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 05:30:23,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:30:23,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 05:30:23,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:30:23,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 05:30:24,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:30:24,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 05:30:24,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:30:24,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 05:30:24,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:30:24,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 05:30:24,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:30:24,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 05:30:24,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:30:24,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 05:30:24,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:30:24,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 05:30:24,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:30:24,486 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2021-11-19 05:30:24,486 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:30:24,486 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594573001] [2021-11-19 05:30:24,487 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594573001] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 05:30:24,487 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1208156513] [2021-11-19 05:30:24,487 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-19 05:30:24,487 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:30:24,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96cd69c9-6614-4431-b5ea-e00d2990d144/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:30:24,490 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96cd69c9-6614-4431-b5ea-e00d2990d144/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 05:30:24,513 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96cd69c9-6614-4431-b5ea-e00d2990d144/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-19 05:30:24,561 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-19 05:30:24,562 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 05:30:24,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 68 conjunts are in the unsatisfiable core [2021-11-19 05:30:24,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:30:25,028 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2021-11-19 05:30:25,028 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:30:28,605 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2021-11-19 05:30:28,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1208156513] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 05:30:28,606 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 05:30:28,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 69 [2021-11-19 05:30:28,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632776276] [2021-11-19 05:30:28,606 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 05:30:28,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2021-11-19 05:30:28,608 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:30:28,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2021-11-19 05:30:28,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=620, Invalid=4072, Unknown=0, NotChecked=0, Total=4692 [2021-11-19 05:30:28,613 INFO L87 Difference]: Start difference. First operand 57 states and 58 transitions. Second operand has 69 states, 69 states have (on average 1.0869565217391304) internal successors, (75), 37 states have internal predecessors, (75), 1 states have call successors, (2), 1 states have call predecessors, (2), 32 states have return successors, (32), 32 states have call predecessors, (32), 1 states have call successors, (32) [2021-11-19 05:30:49,636 WARN L227 SmtUtils]: Spent 11.63s on a formula simplification that was a NOOP. DAG size: 79 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-19 05:31:16,410 WARN L227 SmtUtils]: Spent 19.37s on a formula simplification that was a NOOP. DAG size: 77 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-19 05:31:36,637 WARN L227 SmtUtils]: Spent 13.13s on a formula simplification that was a NOOP. DAG size: 74 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-19 05:31:58,025 WARN L227 SmtUtils]: Spent 12.34s on a formula simplification that was a NOOP. DAG size: 72 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-19 05:32:13,251 WARN L227 SmtUtils]: Spent 8.65s on a formula simplification that was a NOOP. DAG size: 69 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-19 05:32:30,821 WARN L227 SmtUtils]: Spent 13.66s on a formula simplification that was a NOOP. DAG size: 67 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-19 05:32:40,386 WARN L227 SmtUtils]: Spent 7.46s on a formula simplification that was a NOOP. DAG size: 64 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-19 05:32:53,396 WARN L227 SmtUtils]: Spent 11.32s on a formula simplification that was a NOOP. DAG size: 62 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-19 05:33:01,113 WARN L227 SmtUtils]: Spent 5.22s on a formula simplification that was a NOOP. DAG size: 59 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-19 05:33:29,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:33:29,308 INFO L93 Difference]: Finished difference Result 111 states and 127 transitions. [2021-11-19 05:33:29,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-11-19 05:33:29,309 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 1.0869565217391304) internal successors, (75), 37 states have internal predecessors, (75), 1 states have call successors, (2), 1 states have call predecessors, (2), 32 states have return successors, (32), 32 states have call predecessors, (32), 1 states have call successors, (32) Word has length 100 [2021-11-19 05:33:29,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:33:29,312 INFO L225 Difference]: With dead ends: 111 [2021-11-19 05:33:29,312 INFO L226 Difference]: Without dead ends: 105 [2021-11-19 05:33:29,317 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 197 SyntacticMatches, 1 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 745 ImplicationChecksByTransitivity, 182.3s TimeCoverageRelationStatistics Valid=1530, Invalid=7781, Unknown=1, NotChecked=0, Total=9312 [2021-11-19 05:33:29,318 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 0 mSDsluCounter, 1232 mSDsCounter, 0 mSdLazyCounter, 840 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1274 SdHoareTripleChecker+Invalid, 870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 840 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-19 05:33:29,319 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1274 Invalid, 870 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 840 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-19 05:33:29,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2021-11-19 05:33:29,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2021-11-19 05:33:29,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 70 states have (on average 1.0142857142857142) internal successors, (71), 71 states have internal predecessors, (71), 2 states have call successors, (2), 1 states have call predecessors, (2), 32 states have return successors, (33), 32 states have call predecessors, (33), 2 states have call successors, (33) [2021-11-19 05:33:29,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 106 transitions. [2021-11-19 05:33:29,337 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 106 transitions. Word has length 100 [2021-11-19 05:33:29,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:33:29,338 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 106 transitions. [2021-11-19 05:33:29,338 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 1.0869565217391304) internal successors, (75), 37 states have internal predecessors, (75), 1 states have call successors, (2), 1 states have call predecessors, (2), 32 states have return successors, (32), 32 states have call predecessors, (32), 1 states have call successors, (32) [2021-11-19 05:33:29,338 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 106 transitions. [2021-11-19 05:33:29,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2021-11-19 05:33:29,343 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:33:29,343 INFO L514 BasicCegarLoop]: trace histogram [32, 32, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:33:29,365 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96cd69c9-6614-4431-b5ea-e00d2990d144/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-19 05:33:29,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96cd69c9-6614-4431-b5ea-e00d2990d144/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:33:29,547 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:33:29,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:33:29,547 INFO L85 PathProgramCache]: Analyzing trace with hash 1665704854, now seen corresponding path program 5 times [2021-11-19 05:33:29,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:33:29,547 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570305580] [2021-11-19 05:33:29,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:33:29,548 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:33:29,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:33:29,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 05:33:29,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:33:30,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 05:33:30,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:33:30,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 05:33:30,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:33:30,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 05:33:30,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:33:30,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 05:33:30,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:33:30,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 05:33:30,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:33:30,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 05:33:31,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:33:31,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 05:33:31,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:33:31,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 05:33:31,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:33:31,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 05:33:31,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:33:31,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 05:33:31,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:33:31,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 05:33:31,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:33:31,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 05:33:31,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:33:32,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 05:33:32,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:33:32,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 05:33:32,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:33:32,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 05:33:32,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:33:32,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 05:33:32,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:33:32,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 05:33:32,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:33:32,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 05:33:32,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:33:32,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 05:33:32,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:33:33,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 05:33:33,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:33:33,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 05:33:33,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:33:33,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 05:33:33,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:33:33,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 05:33:33,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:33:33,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 05:33:33,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:33:33,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 05:33:33,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:33:33,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 05:33:33,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:33:33,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 05:33:33,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:33:34,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 05:33:34,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:33:34,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 05:33:34,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:33:34,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 05:33:34,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:33:34,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 05:33:34,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:33:34,649 INFO L134 CoverageAnalysis]: Checked inductivity of 2914 backedges. 0 proven. 1457 refuted. 0 times theorem prover too weak. 1457 trivial. 0 not checked. [2021-11-19 05:33:34,650 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:33:34,650 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570305580] [2021-11-19 05:33:34,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570305580] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 05:33:34,650 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2024732846] [2021-11-19 05:33:34,650 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-19 05:33:34,650 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:33:34,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96cd69c9-6614-4431-b5ea-e00d2990d144/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:33:34,654 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96cd69c9-6614-4431-b5ea-e00d2990d144/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 05:33:34,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96cd69c9-6614-4431-b5ea-e00d2990d144/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-19 05:33:57,533 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 32 check-sat command(s) [2021-11-19 05:33:57,533 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 05:33:57,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 132 conjunts are in the unsatisfiable core [2021-11-19 05:33:57,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:33:58,401 INFO L134 CoverageAnalysis]: Checked inductivity of 2914 backedges. 0 proven. 1457 refuted. 0 times theorem prover too weak. 1457 trivial. 0 not checked. [2021-11-19 05:33:58,402 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:34:10,894 INFO L134 CoverageAnalysis]: Checked inductivity of 2914 backedges. 0 proven. 1457 refuted. 0 times theorem prover too weak. 1457 trivial. 0 not checked. [2021-11-19 05:34:10,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2024732846] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 05:34:10,894 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 05:34:10,895 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67, 67] total 133 [2021-11-19 05:34:10,895 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89753564] [2021-11-19 05:34:10,895 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 05:34:10,896 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 133 states [2021-11-19 05:34:10,897 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:34:10,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 133 interpolants. [2021-11-19 05:34:10,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2252, Invalid=15304, Unknown=0, NotChecked=0, Total=17556 [2021-11-19 05:34:10,907 INFO L87 Difference]: Start difference. First operand 105 states and 106 transitions. Second operand has 133 states, 133 states have (on average 1.0451127819548873) internal successors, (139), 69 states have internal predecessors, (139), 1 states have call successors, (2), 1 states have call predecessors, (2), 64 states have return successors, (64), 64 states have call predecessors, (64), 1 states have call successors, (64) [2021-11-19 05:34:14,560 WARN L838 $PredicateComparison]: unable to prove that (and (not (= (mod (+ |c_id_#t~ret4| 9) 4294967296) 100)) (not (= (mod (+ |c_id_#t~ret4| 27) 4294967296) 100)) (not (= (mod (+ |c_id_#t~ret4| 11) 4294967296) 100)) (not (= (mod (+ |c_id_#t~ret4| 16) 4294967296) 100)) (not (= (mod (+ |c_id_#t~ret4| 29) 4294967296) 100)) (not (= (mod (+ 19 |c_id_#t~ret4|) 4294967296) 100)) (not (= (mod (+ |c_id_#t~ret4| 22) 4294967296) 100)) (not (= (mod (+ |c_id_#t~ret4| 2) 4294967296) 100)) (not (= 100 (mod (+ |c_id_#t~ret4| 26) 4294967296))) (not (= (mod (+ |c_id_#t~ret4| 7) 4294967296) 100)) (not (= (mod (+ 23 |c_id_#t~ret4|) 4294967296) 100)) (not (= (mod (+ |c_id_#t~ret4| 31) 4294967296) 100)) (not (= (mod (+ |c_id_#t~ret4| 15) 4294967296) 100)) (not (= 100 (mod (+ |c_id_#t~ret4| 13) 4294967296))) (not (= (mod (+ |c_id_#t~ret4| 25) 4294967296) 100)) (not (= 100 (mod (+ |c_id_#t~ret4| 12) 4294967296))) (not (= (mod (+ |c_id_#t~ret4| 24) 4294967296) 100)) (not (= 100 (mod (+ |c_id_#t~ret4| 30) 4294967296))) (not (= (mod (+ |c_id_#t~ret4| 14) 4294967296) 100)) (not (= (mod (+ |c_id_#t~ret4| 6) 4294967296) 100)) (not (= (mod (+ |c_id_#t~ret4| 20) 4294967296) 100)) (not (= (mod (+ |c_id_#t~ret4| 17) 4294967296) 100)) (not (= (mod (+ |c_id_#t~ret4| 3) 4294967296) 100)) (not (= (mod (+ |c_id_#t~ret4| 5) 4294967296) 100)) (not (= (mod (+ |c_id_#t~ret4| 10) 4294967296) 100)) (not (= (mod (+ |c_id_#t~ret4| 1) 4294967296) 100)) (not (= (mod (+ |c_id_#t~ret4| 8) 4294967296) 100)) (not (= (mod (+ |c_id_#t~ret4| 21) 4294967296) 100)) (not (= 100 (mod (+ |c_id_#t~ret4| 18) 4294967296))) (not (= (mod (+ |c_id_#t~ret4| 4) 4294967296) 100)) (not (= (mod (+ |c_id_#t~ret4| 28) 4294967296) 100))) is different from false [2021-11-19 05:37:52,937 WARN L227 SmtUtils]: Spent 1.63m on a formula simplification that was a NOOP. DAG size: 157 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-19 05:37:55,465 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 05:37:57,488 WARN L838 $PredicateComparison]: unable to prove that (and (not (= (mod (+ |c_id_#t~ret4| 9) 4294967296) 100)) (not (= (mod (+ |c_id_#t~ret4| 27) 4294967296) 100)) (not (= (mod (+ |c_id_#t~ret4| 11) 4294967296) 100)) (not (= (mod (+ |c_id_#t~ret4| 16) 4294967296) 100)) (not (= (mod (+ |c_id_#t~ret4| 29) 4294967296) 100)) (not (= (mod (+ 19 |c_id_#t~ret4|) 4294967296) 100)) (not (= (mod (+ |c_id_#t~ret4| 22) 4294967296) 100)) (not (= (mod (+ |c_id_#t~ret4| 2) 4294967296) 100)) (not (= 100 (mod (+ |c_id_#t~ret4| 26) 4294967296))) (not (= (mod (+ |c_id_#t~ret4| 7) 4294967296) 100)) (not (= (mod (+ 23 |c_id_#t~ret4|) 4294967296) 100)) (not (= (mod (+ |c_id_#t~ret4| 15) 4294967296) 100)) (not (= 100 (mod (+ |c_id_#t~ret4| 13) 4294967296))) (not (= (mod (+ |c_id_#t~ret4| 25) 4294967296) 100)) (not (= 100 (mod (+ |c_id_#t~ret4| 12) 4294967296))) (not (= (mod (+ |c_id_#t~ret4| 24) 4294967296) 100)) (not (= 100 (mod (+ |c_id_#t~ret4| 30) 4294967296))) (not (= (mod (+ |c_id_#t~ret4| 14) 4294967296) 100)) (not (= (mod (+ |c_id_#t~ret4| 6) 4294967296) 100)) (not (= (mod (+ |c_id_#t~ret4| 20) 4294967296) 100)) (not (= (mod (+ |c_id_#t~ret4| 17) 4294967296) 100)) (not (= (mod (+ |c_id_#t~ret4| 3) 4294967296) 100)) (not (= (mod (+ |c_id_#t~ret4| 5) 4294967296) 100)) (not (= (mod (+ |c_id_#t~ret4| 10) 4294967296) 100)) (not (= (mod (+ |c_id_#t~ret4| 1) 4294967296) 100)) (not (= (mod (+ |c_id_#t~ret4| 8) 4294967296) 100)) (not (= (mod (+ |c_id_#t~ret4| 21) 4294967296) 100)) (not (= 100 (mod (+ |c_id_#t~ret4| 18) 4294967296))) (not (= (mod (+ |c_id_#t~ret4| 4) 4294967296) 100)) (not (= (mod (+ |c_id_#t~ret4| 28) 4294967296) 100))) is different from false [2021-11-19 05:37:59,502 WARN L838 $PredicateComparison]: unable to prove that (and (not (= 100 (mod (+ |c_id_#res| 24) 4294967296))) (not (= 100 (mod (+ 10 |c_id_#res|) 4294967296))) (not (= (mod (+ 3 |c_id_#res|) 4294967296) 100)) (not (= (mod |c_id_#res| 4294967296) 100)) (not (= 100 (mod (+ |c_id_#res| 27) 4294967296))) (not (= (mod (+ 13 |c_id_#res|) 4294967296) 100)) (not (= (mod (+ 21 |c_id_#res|) 4294967296) 100)) (not (= (mod (+ 26 |c_id_#res|) 4294967296) 100)) (not (= (mod (+ 19 |c_id_#res|) 4294967296) 100)) (not (= 100 (mod (+ 4 |c_id_#res|) 4294967296))) (not (= (mod (+ 9 |c_id_#res|) 4294967296) 100)) (not (= (mod (+ 15 |c_id_#res|) 4294967296) 100)) (not (= (mod (+ 18 |c_id_#res|) 4294967296) 100)) (not (= (mod (+ 2 |c_id_#res|) 4294967296) 100)) (not (= (mod (+ |c_id_#res| 1) 4294967296) 100)) (not (= (mod (+ 29 |c_id_#res|) 4294967296) 100)) (not (= (mod (+ 17 |c_id_#res|) 4294967296) 100)) (not (= (mod (+ 28 |c_id_#res|) 4294967296) 100)) (not (= 100 (mod (+ 20 |c_id_#res|) 4294967296))) (not (= (mod (+ 23 |c_id_#res|) 4294967296) 100)) (not (= (mod (+ 8 |c_id_#res|) 4294967296) 100)) (not (= (mod (+ 25 |c_id_#res|) 4294967296) 100)) (not (= (mod (+ 6 |c_id_#res|) 4294967296) 100)) (not (= (mod (+ 7 |c_id_#res|) 4294967296) 100)) (not (= (mod (+ 22 |c_id_#res|) 4294967296) 100)) (not (= (mod (+ 5 |c_id_#res|) 4294967296) 100)) (not (= 100 (mod (+ 14 |c_id_#res|) 4294967296))) (not (= (mod (+ 16 |c_id_#res|) 4294967296) 100)) (not (= (mod (+ 11 |c_id_#res|) 4294967296) 100)) (not (= (mod (+ 12 |c_id_#res|) 4294967296) 100))) is different from false [2021-11-19 05:38:01,514 WARN L838 $PredicateComparison]: unable to prove that (and (not (= (mod (+ |c_id_#t~ret4| 9) 4294967296) 100)) (not (= (mod (+ |c_id_#t~ret4| 27) 4294967296) 100)) (not (= (mod (+ |c_id_#t~ret4| 11) 4294967296) 100)) (not (= (mod (+ |c_id_#t~ret4| 16) 4294967296) 100)) (not (= (mod (+ |c_id_#t~ret4| 29) 4294967296) 100)) (not (= (mod (+ 19 |c_id_#t~ret4|) 4294967296) 100)) (not (= (mod (+ |c_id_#t~ret4| 22) 4294967296) 100)) (not (= (mod (+ |c_id_#t~ret4| 2) 4294967296) 100)) (not (= 100 (mod (+ |c_id_#t~ret4| 26) 4294967296))) (not (= (mod (+ |c_id_#t~ret4| 7) 4294967296) 100)) (not (= (mod (+ 23 |c_id_#t~ret4|) 4294967296) 100)) (not (= (mod (+ |c_id_#t~ret4| 15) 4294967296) 100)) (not (= 100 (mod (+ |c_id_#t~ret4| 13) 4294967296))) (not (= (mod (+ |c_id_#t~ret4| 25) 4294967296) 100)) (not (= 100 (mod (+ |c_id_#t~ret4| 12) 4294967296))) (not (= (mod (+ |c_id_#t~ret4| 24) 4294967296) 100)) (not (= (mod (+ |c_id_#t~ret4| 14) 4294967296) 100)) (not (= (mod (+ |c_id_#t~ret4| 6) 4294967296) 100)) (not (= (mod (+ |c_id_#t~ret4| 20) 4294967296) 100)) (not (= (mod (+ |c_id_#t~ret4| 17) 4294967296) 100)) (not (= (mod (+ |c_id_#t~ret4| 3) 4294967296) 100)) (not (= (mod (+ |c_id_#t~ret4| 5) 4294967296) 100)) (not (= (mod (+ |c_id_#t~ret4| 10) 4294967296) 100)) (not (= (mod (+ |c_id_#t~ret4| 1) 4294967296) 100)) (not (= (mod (+ |c_id_#t~ret4| 8) 4294967296) 100)) (not (= (mod (+ |c_id_#t~ret4| 21) 4294967296) 100)) (not (= 100 (mod (+ |c_id_#t~ret4| 18) 4294967296))) (not (= (mod (+ |c_id_#t~ret4| 4) 4294967296) 100)) (not (= (mod (+ |c_id_#t~ret4| 28) 4294967296) 100))) is different from false [2021-11-19 05:41:20,138 WARN L227 SmtUtils]: Spent 1.37m on a formula simplification that was a NOOP. DAG size: 147 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-19 05:41:23,692 WARN L838 $PredicateComparison]: unable to prove that (and (not (= (mod (+ |c_id_#t~ret4| 9) 4294967296) 100)) (not (= (mod (+ |c_id_#t~ret4| 27) 4294967296) 100)) (not (= (mod (+ |c_id_#t~ret4| 11) 4294967296) 100)) (not (= (mod (+ |c_id_#t~ret4| 16) 4294967296) 100)) (not (= (mod (+ 19 |c_id_#t~ret4|) 4294967296) 100)) (not (= (mod (+ |c_id_#t~ret4| 22) 4294967296) 100)) (not (= (mod (+ |c_id_#t~ret4| 2) 4294967296) 100)) (not (= 100 (mod (+ |c_id_#t~ret4| 26) 4294967296))) (not (= (mod (+ |c_id_#t~ret4| 7) 4294967296) 100)) (not (= (mod (+ 23 |c_id_#t~ret4|) 4294967296) 100)) (not (= (mod (+ |c_id_#t~ret4| 15) 4294967296) 100)) (not (= 100 (mod (+ |c_id_#t~ret4| 13) 4294967296))) (not (= (mod (+ |c_id_#t~ret4| 25) 4294967296) 100)) (not (= 100 (mod (+ |c_id_#t~ret4| 12) 4294967296))) (not (= (mod (+ |c_id_#t~ret4| 24) 4294967296) 100)) (not (= (mod (+ |c_id_#t~ret4| 14) 4294967296) 100)) (not (= (mod (+ |c_id_#t~ret4| 6) 4294967296) 100)) (not (= (mod (+ |c_id_#t~ret4| 20) 4294967296) 100)) (not (= (mod (+ |c_id_#t~ret4| 17) 4294967296) 100)) (not (= (mod (+ |c_id_#t~ret4| 3) 4294967296) 100)) (not (= (mod (+ |c_id_#t~ret4| 5) 4294967296) 100)) (not (= (mod (+ |c_id_#t~ret4| 10) 4294967296) 100)) (not (= (mod (+ |c_id_#t~ret4| 1) 4294967296) 100)) (not (= (mod (+ |c_id_#t~ret4| 8) 4294967296) 100)) (not (= (mod (+ |c_id_#t~ret4| 21) 4294967296) 100)) (not (= 100 (mod (+ |c_id_#t~ret4| 18) 4294967296))) (not (= (mod (+ |c_id_#t~ret4| 4) 4294967296) 100)) (not (= (mod (+ |c_id_#t~ret4| 28) 4294967296) 100))) is different from false [2021-11-19 05:44:07,145 WARN L227 SmtUtils]: Spent 1.36m on a formula simplification that was a NOOP. DAG size: 142 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)