./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound5.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730a09bc-b838-4ff2-a531-6e679c3e8dcc/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730a09bc-b838-4ff2-a531-6e679c3e8dcc/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730a09bc-b838-4ff2-a531-6e679c3e8dcc/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730a09bc-b838-4ff2-a531-6e679c3e8dcc/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound5.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730a09bc-b838-4ff2-a531-6e679c3e8dcc/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730a09bc-b838-4ff2-a531-6e679c3e8dcc/bin/uautomizer-tPACEb0tL8 --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 34f640e37bae156029b1a359a4abe58394472212f3f36aea9107706542ec544a --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 12:14:14,026 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:14:14,028 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:14:14,061 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:14:14,062 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:14:14,066 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:14:14,069 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:14:14,074 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:14:14,077 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:14:14,085 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:14:14,086 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:14:14,088 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:14:14,088 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:14:14,089 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:14:14,090 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:14:14,090 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:14:14,091 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:14:14,092 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:14:14,094 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:14:14,096 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:14:14,098 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:14:14,099 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:14:14,100 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:14:14,101 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:14:14,105 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:14:14,106 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:14:14,106 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:14:14,107 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:14:14,107 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:14:14,109 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:14:14,109 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:14:14,110 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:14:14,111 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:14:14,112 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:14:14,113 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:14:14,113 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:14:14,114 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:14:14,115 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:14:14,115 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:14:14,116 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:14:14,117 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:14:14,118 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730a09bc-b838-4ff2-a531-6e679c3e8dcc/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 12:14:14,147 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:14:14,147 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:14:14,148 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:14:14,148 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:14:14,149 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:14:14,149 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:14:14,150 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:14:14,150 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:14:14,150 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:14:14,151 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:14:14,151 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:14:14,151 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:14:14,151 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:14:14,151 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:14:14,152 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:14:14,152 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:14:14,152 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:14:14,152 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:14:14,153 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:14:14,153 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:14:14,153 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:14:14,153 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:14:14,154 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:14:14,154 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:14:14,154 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:14:14,154 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:14:14,154 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:14:14,155 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:14:14,155 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:14:14,155 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:14:14,155 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:14:14,156 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:14:14,156 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:14:14,156 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_730a09bc-b838-4ff2-a531-6e679c3e8dcc/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730a09bc-b838-4ff2-a531-6e679c3e8dcc/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 34f640e37bae156029b1a359a4abe58394472212f3f36aea9107706542ec544a [2022-11-16 12:14:14,490 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:14:14,518 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:14:14,521 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:14:14,523 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:14:14,524 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:14:14,526 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730a09bc-b838-4ff2-a531-6e679c3e8dcc/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound5.c [2022-11-16 12:14:14,624 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730a09bc-b838-4ff2-a531-6e679c3e8dcc/bin/uautomizer-tPACEb0tL8/data/5645619a8/ead2c0ef761e4af09901150f2259e8d9/FLAG62936d743 [2022-11-16 12:14:15,149 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:14:15,150 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730a09bc-b838-4ff2-a531-6e679c3e8dcc/sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound5.c [2022-11-16 12:14:15,156 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730a09bc-b838-4ff2-a531-6e679c3e8dcc/bin/uautomizer-tPACEb0tL8/data/5645619a8/ead2c0ef761e4af09901150f2259e8d9/FLAG62936d743 [2022-11-16 12:14:15,609 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730a09bc-b838-4ff2-a531-6e679c3e8dcc/bin/uautomizer-tPACEb0tL8/data/5645619a8/ead2c0ef761e4af09901150f2259e8d9 [2022-11-16 12:14:15,613 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:14:15,615 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:14:15,621 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:14:15,621 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:14:15,625 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:14:15,626 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:14:15" (1/1) ... [2022-11-16 12:14:15,628 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c860fa5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:14:15, skipping insertion in model container [2022-11-16 12:14:15,628 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:14:15" (1/1) ... [2022-11-16 12:14:15,636 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:14:15,659 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:14:15,959 WARN L229 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_730a09bc-b838-4ff2-a531-6e679c3e8dcc/sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound5.c[537,550] [2022-11-16 12:14:15,981 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:14:15,999 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:14:16,017 WARN L229 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_730a09bc-b838-4ff2-a531-6e679c3e8dcc/sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound5.c[537,550] [2022-11-16 12:14:16,045 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:14:16,065 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:14:16,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:14:16 WrapperNode [2022-11-16 12:14:16,066 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:14:16,067 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:14:16,067 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:14:16,067 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:14:16,077 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:14:16" (1/1) ... [2022-11-16 12:14:16,086 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:14:16" (1/1) ... [2022-11-16 12:14:16,109 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 42 [2022-11-16 12:14:16,110 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:14:16,111 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:14:16,111 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:14:16,111 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:14:16,122 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:14:16" (1/1) ... [2022-11-16 12:14:16,122 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:14:16" (1/1) ... [2022-11-16 12:14:16,134 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:14:16" (1/1) ... [2022-11-16 12:14:16,134 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:14:16" (1/1) ... [2022-11-16 12:14:16,137 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:14:16" (1/1) ... [2022-11-16 12:14:16,141 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:14:16" (1/1) ... [2022-11-16 12:14:16,142 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:14:16" (1/1) ... [2022-11-16 12:14:16,143 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:14:16" (1/1) ... [2022-11-16 12:14:16,145 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:14:16,146 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:14:16,146 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:14:16,146 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:14:16,156 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:14:16" (1/1) ... [2022-11-16 12:14:16,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:14:16,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730a09bc-b838-4ff2-a531-6e679c3e8dcc/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:14:16,206 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730a09bc-b838-4ff2-a531-6e679c3e8dcc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:14:16,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730a09bc-b838-4ff2-a531-6e679c3e8dcc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:14:16,258 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:14:16,258 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-16 12:14:16,258 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-16 12:14:16,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:14:16,259 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:14:16,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:14:16,259 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-16 12:14:16,259 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-16 12:14:16,334 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:14:16,336 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:14:16,485 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:14:16,492 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:14:16,492 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-16 12:14:16,494 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:14:16 BoogieIcfgContainer [2022-11-16 12:14:16,495 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:14:16,497 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:14:16,497 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:14:16,501 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:14:16,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:14:15" (1/3) ... [2022-11-16 12:14:16,502 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a1910ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:14:16, skipping insertion in model container [2022-11-16 12:14:16,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:14:16" (2/3) ... [2022-11-16 12:14:16,503 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a1910ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:14:16, skipping insertion in model container [2022-11-16 12:14:16,503 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:14:16" (3/3) ... [2022-11-16 12:14:16,504 INFO L112 eAbstractionObserver]: Analyzing ICFG prodbin-ll_valuebound5.c [2022-11-16 12:14:16,524 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:14:16,524 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 12:14:16,577 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:14:16,584 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@349eef23, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:14:16,585 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 12:14:16,589 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-16 12:14:16,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-16 12:14:16,599 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:14:16,600 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:14:16,601 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:14:16,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:14:16,608 INFO L85 PathProgramCache]: Analyzing trace with hash -861605892, now seen corresponding path program 1 times [2022-11-16 12:14:16,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:14:16,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125605805] [2022-11-16 12:14:16,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:14:16,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:14:16,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:14:16,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:14:16,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125605805] [2022-11-16 12:14:16,758 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-16 12:14:16,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [607074253] [2022-11-16 12:14:16,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:14:16,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:14:16,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730a09bc-b838-4ff2-a531-6e679c3e8dcc/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:14:16,763 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730a09bc-b838-4ff2-a531-6e679c3e8dcc/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:14:16,772 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730a09bc-b838-4ff2-a531-6e679c3e8dcc/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 12:14:16,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:14:16,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-16 12:14:16,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:14:16,955 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-16 12:14:16,957 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:14:16,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [607074253] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:14:16,967 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:14:16,968 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:14:16,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068865855] [2022-11-16 12:14:16,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:14:16,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 12:14:16,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:14:17,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 12:14:17,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 12:14:17,037 INFO L87 Difference]: Start difference. First operand has 27 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 12:14:17,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:14:17,063 INFO L93 Difference]: Finished difference Result 51 states and 71 transitions. [2022-11-16 12:14:17,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 12:14:17,070 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 24 [2022-11-16 12:14:17,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:14:17,082 INFO L225 Difference]: With dead ends: 51 [2022-11-16 12:14:17,082 INFO L226 Difference]: Without dead ends: 23 [2022-11-16 12:14:17,086 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 12:14:17,090 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:14:17,092 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:14:17,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-11-16 12:14:17,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-11-16 12:14:17,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-16 12:14:17,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2022-11-16 12:14:17,153 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 24 [2022-11-16 12:14:17,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:14:17,155 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2022-11-16 12:14:17,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 12:14:17,156 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2022-11-16 12:14:17,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-16 12:14:17,159 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:14:17,159 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:14:17,174 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730a09bc-b838-4ff2-a531-6e679c3e8dcc/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 12:14:17,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730a09bc-b838-4ff2-a531-6e679c3e8dcc/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-16 12:14:17,369 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:14:17,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:14:17,370 INFO L85 PathProgramCache]: Analyzing trace with hash -2010313222, now seen corresponding path program 1 times [2022-11-16 12:14:17,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:14:17,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182143465] [2022-11-16 12:14:17,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:14:17,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:14:17,400 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:14:17,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1279077915] [2022-11-16 12:14:17,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:14:17,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:14:17,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730a09bc-b838-4ff2-a531-6e679c3e8dcc/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:14:17,406 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730a09bc-b838-4ff2-a531-6e679c3e8dcc/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:14:17,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730a09bc-b838-4ff2-a531-6e679c3e8dcc/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 12:14:17,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:14:17,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-16 12:14:17,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:14:17,624 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 12:14:17,625 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:14:17,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:14:17,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182143465] [2022-11-16 12:14:17,625 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:14:17,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1279077915] [2022-11-16 12:14:17,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1279077915] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:14:17,626 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:14:17,626 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:14:17,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666399814] [2022-11-16 12:14:17,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:14:17,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:14:17,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:14:17,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:14:17,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:14:17,630 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 12:14:17,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:14:17,725 INFO L93 Difference]: Finished difference Result 35 states and 41 transitions. [2022-11-16 12:14:17,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:14:17,726 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 24 [2022-11-16 12:14:17,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:14:17,727 INFO L225 Difference]: With dead ends: 35 [2022-11-16 12:14:17,727 INFO L226 Difference]: Without dead ends: 33 [2022-11-16 12:14:17,728 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:14:17,729 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 8 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:14:17,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 71 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:14:17,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-11-16 12:14:17,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 29. [2022-11-16 12:14:17,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 21 states have internal predecessors, (22), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-16 12:14:17,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2022-11-16 12:14:17,747 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 24 [2022-11-16 12:14:17,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:14:17,750 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2022-11-16 12:14:17,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 12:14:17,751 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2022-11-16 12:14:17,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-16 12:14:17,754 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:14:17,755 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:14:17,768 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730a09bc-b838-4ff2-a531-6e679c3e8dcc/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 12:14:17,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730a09bc-b838-4ff2-a531-6e679c3e8dcc/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:14:17,962 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:14:17,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:14:17,963 INFO L85 PathProgramCache]: Analyzing trace with hash -895979555, now seen corresponding path program 1 times [2022-11-16 12:14:17,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:14:17,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813708388] [2022-11-16 12:14:17,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:14:17,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:14:17,983 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:14:17,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [861293956] [2022-11-16 12:14:17,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:14:17,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:14:17,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730a09bc-b838-4ff2-a531-6e679c3e8dcc/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:14:17,985 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730a09bc-b838-4ff2-a531-6e679c3e8dcc/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:14:17,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730a09bc-b838-4ff2-a531-6e679c3e8dcc/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 12:14:18,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:14:18,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 12:14:18,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:14:18,207 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 12:14:18,215 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:14:18,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:14:18,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813708388] [2022-11-16 12:14:18,216 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:14:18,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [861293956] [2022-11-16 12:14:18,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [861293956] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:14:18,217 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:14:18,217 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:14:18,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994811838] [2022-11-16 12:14:18,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:14:18,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:14:18,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:14:18,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:14:18,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:14:18,219 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-16 12:14:18,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:14:18,333 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2022-11-16 12:14:18,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:14:18,334 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 30 [2022-11-16 12:14:18,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:14:18,335 INFO L225 Difference]: With dead ends: 39 [2022-11-16 12:14:18,336 INFO L226 Difference]: Without dead ends: 32 [2022-11-16 12:14:18,336 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:14:18,338 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 15 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:14:18,338 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 69 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:14:18,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-11-16 12:14:18,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2022-11-16 12:14:18,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 20 states have (on average 1.15) internal successors, (23), 21 states have internal predecessors, (23), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-16 12:14:18,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2022-11-16 12:14:18,347 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 30 [2022-11-16 12:14:18,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:14:18,347 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2022-11-16 12:14:18,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-16 12:14:18,348 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2022-11-16 12:14:18,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-16 12:14:18,349 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:14:18,349 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:14:18,364 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730a09bc-b838-4ff2-a531-6e679c3e8dcc/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 12:14:18,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730a09bc-b838-4ff2-a531-6e679c3e8dcc/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:14:18,556 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:14:18,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:14:18,557 INFO L85 PathProgramCache]: Analyzing trace with hash -1371702355, now seen corresponding path program 1 times [2022-11-16 12:14:18,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:14:18,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753120092] [2022-11-16 12:14:18,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:14:18,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:14:18,585 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:14:18,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1816063925] [2022-11-16 12:14:18,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:14:18,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:14:18,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730a09bc-b838-4ff2-a531-6e679c3e8dcc/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:14:18,599 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730a09bc-b838-4ff2-a531-6e679c3e8dcc/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:14:18,623 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730a09bc-b838-4ff2-a531-6e679c3e8dcc/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 12:14:18,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:14:18,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-16 12:14:18,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:14:19,268 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 12:14:19,268 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:14:25,858 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 12:14:25,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:14:25,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753120092] [2022-11-16 12:14:25,859 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:14:25,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1816063925] [2022-11-16 12:14:25,860 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1816063925] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-16 12:14:25,860 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:14:25,860 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2022-11-16 12:14:25,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225803957] [2022-11-16 12:14:25,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:14:25,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:14:25,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:14:25,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:14:25,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=120, Unknown=1, NotChecked=0, Total=156 [2022-11-16 12:14:25,862 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-16 12:14:28,416 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-16 12:14:28,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:14:28,826 INFO L93 Difference]: Finished difference Result 43 states and 49 transitions. [2022-11-16 12:14:28,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 12:14:28,827 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 33 [2022-11-16 12:14:28,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:14:28,829 INFO L225 Difference]: With dead ends: 43 [2022-11-16 12:14:28,829 INFO L226 Difference]: Without dead ends: 41 [2022-11-16 12:14:28,830 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=45, Invalid=164, Unknown=1, NotChecked=0, Total=210 [2022-11-16 12:14:28,831 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 11 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-16 12:14:28,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 79 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 57 Invalid, 1 Unknown, 0 Unchecked, 2.7s Time] [2022-11-16 12:14:28,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-11-16 12:14:28,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2022-11-16 12:14:28,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 28 states have internal predecessors, (32), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-16 12:14:28,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 45 transitions. [2022-11-16 12:14:28,863 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 45 transitions. Word has length 33 [2022-11-16 12:14:28,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:14:28,864 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 45 transitions. [2022-11-16 12:14:28,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-16 12:14:28,872 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 45 transitions. [2022-11-16 12:14:28,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-16 12:14:28,874 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:14:28,874 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:14:28,881 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730a09bc-b838-4ff2-a531-6e679c3e8dcc/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 12:14:29,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730a09bc-b838-4ff2-a531-6e679c3e8dcc/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:14:29,075 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:14:29,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:14:29,075 INFO L85 PathProgramCache]: Analyzing trace with hash 403305007, now seen corresponding path program 1 times [2022-11-16 12:14:29,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:14:29,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041984961] [2022-11-16 12:14:29,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:14:29,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:14:29,092 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:14:29,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1246759498] [2022-11-16 12:14:29,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:14:29,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:14:29,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730a09bc-b838-4ff2-a531-6e679c3e8dcc/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:14:29,094 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730a09bc-b838-4ff2-a531-6e679c3e8dcc/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:14:29,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730a09bc-b838-4ff2-a531-6e679c3e8dcc/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 12:14:29,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:14:29,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-16 12:14:29,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:14:29,501 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 12:14:29,501 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:14:30,499 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 12:14:30,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:14:30,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041984961] [2022-11-16 12:14:30,500 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:14:30,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1246759498] [2022-11-16 12:14:30,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1246759498] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:14:30,500 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:14:30,501 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2022-11-16 12:14:30,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605608655] [2022-11-16 12:14:30,502 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:14:30,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-16 12:14:30,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:14:30,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-16 12:14:30,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2022-11-16 12:14:30,505 INFO L87 Difference]: Start difference. First operand 39 states and 45 transitions. Second operand has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 13 states have internal predecessors, (31), 5 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-16 12:14:32,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:14:32,323 INFO L93 Difference]: Finished difference Result 68 states and 83 transitions. [2022-11-16 12:14:32,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-16 12:14:32,326 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 13 states have internal predecessors, (31), 5 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) Word has length 33 [2022-11-16 12:14:32,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:14:32,328 INFO L225 Difference]: With dead ends: 68 [2022-11-16 12:14:32,328 INFO L226 Difference]: Without dead ends: 61 [2022-11-16 12:14:32,329 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=101, Invalid=405, Unknown=0, NotChecked=0, Total=506 [2022-11-16 12:14:32,330 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 37 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:14:32,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 120 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-16 12:14:32,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-11-16 12:14:32,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 59. [2022-11-16 12:14:32,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 43 states have (on average 1.255813953488372) internal successors, (54), 44 states have internal predecessors, (54), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-16 12:14:32,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 73 transitions. [2022-11-16 12:14:32,360 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 73 transitions. Word has length 33 [2022-11-16 12:14:32,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:14:32,362 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 73 transitions. [2022-11-16 12:14:32,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 13 states have internal predecessors, (31), 5 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-16 12:14:32,364 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 73 transitions. [2022-11-16 12:14:32,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-16 12:14:32,369 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:14:32,369 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:14:32,382 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730a09bc-b838-4ff2-a531-6e679c3e8dcc/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 12:14:32,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730a09bc-b838-4ff2-a531-6e679c3e8dcc/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:14:32,575 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:14:32,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:14:32,576 INFO L85 PathProgramCache]: Analyzing trace with hash 685673296, now seen corresponding path program 1 times [2022-11-16 12:14:32,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:14:32,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372135557] [2022-11-16 12:14:32,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:14:32,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:14:32,592 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:14:32,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1562779276] [2022-11-16 12:14:32,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:14:32,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:14:32,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730a09bc-b838-4ff2-a531-6e679c3e8dcc/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:14:32,604 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730a09bc-b838-4ff2-a531-6e679c3e8dcc/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:14:32,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730a09bc-b838-4ff2-a531-6e679c3e8dcc/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 12:14:32,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:14:32,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-16 12:14:32,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:14:32,787 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-16 12:14:32,788 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:14:32,914 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-16 12:14:32,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:14:32,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372135557] [2022-11-16 12:14:32,914 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:14:32,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1562779276] [2022-11-16 12:14:32,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1562779276] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:14:32,915 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:14:32,915 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 11 [2022-11-16 12:14:32,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124605495] [2022-11-16 12:14:32,916 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:14:32,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 12:14:32,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:14:32,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 12:14:32,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:14:32,919 INFO L87 Difference]: Start difference. First operand 59 states and 73 transitions. Second operand has 11 states, 10 states have (on average 2.6) internal successors, (26), 8 states have internal predecessors, (26), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-16 12:14:34,945 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-16 12:14:37,021 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-16 12:14:37,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:14:37,080 INFO L93 Difference]: Finished difference Result 67 states and 80 transitions. [2022-11-16 12:14:37,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:14:37,081 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.6) internal successors, (26), 8 states have internal predecessors, (26), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) Word has length 39 [2022-11-16 12:14:37,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:14:37,082 INFO L225 Difference]: With dead ends: 67 [2022-11-16 12:14:37,082 INFO L226 Difference]: Without dead ends: 60 [2022-11-16 12:14:37,083 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2022-11-16 12:14:37,084 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 14 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:14:37,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 110 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 85 Invalid, 2 Unknown, 0 Unchecked, 4.1s Time] [2022-11-16 12:14:37,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-11-16 12:14:37,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 58. [2022-11-16 12:14:37,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 43 states have (on average 1.1627906976744187) internal successors, (50), 43 states have internal predecessors, (50), 9 states have call successors, (9), 5 states have call predecessors, (9), 5 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-16 12:14:37,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 68 transitions. [2022-11-16 12:14:37,099 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 68 transitions. Word has length 39 [2022-11-16 12:14:37,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:14:37,100 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 68 transitions. [2022-11-16 12:14:37,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.6) internal successors, (26), 8 states have internal predecessors, (26), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-16 12:14:37,101 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 68 transitions. [2022-11-16 12:14:37,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-16 12:14:37,102 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:14:37,102 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:14:37,123 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730a09bc-b838-4ff2-a531-6e679c3e8dcc/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-16 12:14:37,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730a09bc-b838-4ff2-a531-6e679c3e8dcc/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:14:37,310 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:14:37,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:14:37,310 INFO L85 PathProgramCache]: Analyzing trace with hash -662815268, now seen corresponding path program 1 times [2022-11-16 12:14:37,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:14:37,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116354860] [2022-11-16 12:14:37,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:14:37,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:14:37,325 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:14:37,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1979685062] [2022-11-16 12:14:37,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:14:37,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:14:37,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730a09bc-b838-4ff2-a531-6e679c3e8dcc/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:14:37,333 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730a09bc-b838-4ff2-a531-6e679c3e8dcc/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:14:37,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730a09bc-b838-4ff2-a531-6e679c3e8dcc/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 12:14:37,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:14:37,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-16 12:14:37,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:14:42,792 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-16 12:14:42,792 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:14:55,449 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-16 12:14:55,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:14:55,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116354860] [2022-11-16 12:14:55,450 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:14:55,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1979685062] [2022-11-16 12:14:55,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1979685062] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:14:55,450 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:14:55,451 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 19 [2022-11-16 12:14:55,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633858473] [2022-11-16 12:14:55,451 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:14:55,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 12:14:55,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:14:55,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 12:14:55,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=277, Unknown=3, NotChecked=0, Total=342 [2022-11-16 12:14:55,453 INFO L87 Difference]: Start difference. First operand 58 states and 68 transitions. Second operand has 19 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 18 states have internal predecessors, (39), 6 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-16 12:15:00,399 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-16 12:15:01,917 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-16 12:15:13,650 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-16 12:15:18,598 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-16 12:15:18,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:15:18,920 INFO L93 Difference]: Finished difference Result 93 states and 108 transitions. [2022-11-16 12:15:18,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-16 12:15:18,920 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 18 states have internal predecessors, (39), 6 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 42 [2022-11-16 12:15:18,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:15:18,923 INFO L225 Difference]: With dead ends: 93 [2022-11-16 12:15:18,923 INFO L226 Difference]: Without dead ends: 91 [2022-11-16 12:15:18,924 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 66 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 26.3s TimeCoverageRelationStatistics Valid=124, Invalid=522, Unknown=4, NotChecked=0, Total=650 [2022-11-16 12:15:18,925 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 36 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 28 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 30 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2022-11-16 12:15:18,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 170 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 228 Invalid, 2 Unknown, 30 Unchecked, 9.9s Time] [2022-11-16 12:15:18,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2022-11-16 12:15:18,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 79. [2022-11-16 12:15:18,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 59 states have (on average 1.152542372881356) internal successors, (68), 60 states have internal predecessors, (68), 12 states have call successors, (12), 7 states have call predecessors, (12), 7 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-16 12:15:18,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 92 transitions. [2022-11-16 12:15:18,944 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 92 transitions. Word has length 42 [2022-11-16 12:15:18,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:15:18,945 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 92 transitions. [2022-11-16 12:15:18,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 18 states have internal predecessors, (39), 6 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-16 12:15:18,945 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 92 transitions. [2022-11-16 12:15:18,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-16 12:15:18,947 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:15:18,947 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:15:18,955 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730a09bc-b838-4ff2-a531-6e679c3e8dcc/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-16 12:15:19,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730a09bc-b838-4ff2-a531-6e679c3e8dcc/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:15:19,154 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:15:19,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:15:19,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1448142086, now seen corresponding path program 2 times [2022-11-16 12:15:19,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:15:19,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935225032] [2022-11-16 12:15:19,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:15:19,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:15:19,169 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:15:19,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1905274275] [2022-11-16 12:15:19,183 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:15:19,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:15:19,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730a09bc-b838-4ff2-a531-6e679c3e8dcc/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:15:19,192 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730a09bc-b838-4ff2-a531-6e679c3e8dcc/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:15:19,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730a09bc-b838-4ff2-a531-6e679c3e8dcc/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-16 12:15:19,255 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:15:19,255 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:15:19,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-16 12:15:19,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:15:19,636 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 55 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-16 12:15:19,636 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:15:20,259 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 45 proven. 3 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-16 12:15:20,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:15:20,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935225032] [2022-11-16 12:15:20,260 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:15:20,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1905274275] [2022-11-16 12:15:20,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1905274275] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:15:20,260 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:15:20,260 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 16 [2022-11-16 12:15:20,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294894426] [2022-11-16 12:15:20,261 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:15:20,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 12:15:20,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:15:20,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 12:15:20,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2022-11-16 12:15:20,262 INFO L87 Difference]: Start difference. First operand 79 states and 92 transitions. Second operand has 16 states, 16 states have (on average 2.6875) internal successors, (43), 14 states have internal predecessors, (43), 9 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2022-11-16 12:15:20,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:15:20,687 INFO L93 Difference]: Finished difference Result 114 states and 131 transitions. [2022-11-16 12:15:20,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 12:15:20,688 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 14 states have internal predecessors, (43), 9 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) Word has length 60 [2022-11-16 12:15:20,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:15:20,689 INFO L225 Difference]: With dead ends: 114 [2022-11-16 12:15:20,689 INFO L226 Difference]: Without dead ends: 70 [2022-11-16 12:15:20,690 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 101 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=132, Invalid=420, Unknown=0, NotChecked=0, Total=552 [2022-11-16 12:15:20,691 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 16 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:15:20,692 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 145 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 12:15:20,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-11-16 12:15:20,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 68. [2022-11-16 12:15:20,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 50 states have (on average 1.04) internal successors, (52), 52 states have internal predecessors, (52), 11 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (11), 9 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-16 12:15:20,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 74 transitions. [2022-11-16 12:15:20,706 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 74 transitions. Word has length 60 [2022-11-16 12:15:20,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:15:20,706 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 74 transitions. [2022-11-16 12:15:20,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 14 states have internal predecessors, (43), 9 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2022-11-16 12:15:20,707 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 74 transitions. [2022-11-16 12:15:20,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-16 12:15:20,708 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:15:20,708 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:15:20,723 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730a09bc-b838-4ff2-a531-6e679c3e8dcc/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-16 12:15:20,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730a09bc-b838-4ff2-a531-6e679c3e8dcc/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-16 12:15:20,915 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:15:20,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:15:20,915 INFO L85 PathProgramCache]: Analyzing trace with hash -1307593476, now seen corresponding path program 3 times [2022-11-16 12:15:20,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:15:20,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528054562] [2022-11-16 12:15:20,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:15:20,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:15:20,931 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:15:20,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [830724375] [2022-11-16 12:15:20,931 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 12:15:20,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:15:20,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730a09bc-b838-4ff2-a531-6e679c3e8dcc/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:15:20,933 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730a09bc-b838-4ff2-a531-6e679c3e8dcc/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:15:20,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730a09bc-b838-4ff2-a531-6e679c3e8dcc/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-16 12:15:21,022 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-16 12:15:21,022 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:15:21,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-16 12:15:21,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:15:22,133 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 24 proven. 37 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-16 12:15:22,134 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:15:23,411 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 37 proven. 24 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-16 12:15:23,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:15:23,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528054562] [2022-11-16 12:15:23,412 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:15:23,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [830724375] [2022-11-16 12:15:23,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [830724375] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:15:23,413 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:15:23,413 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 16] total 32 [2022-11-16 12:15:23,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242938344] [2022-11-16 12:15:23,413 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:15:23,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-16 12:15:23,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:15:23,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-16 12:15:23,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=806, Unknown=0, NotChecked=0, Total=992 [2022-11-16 12:15:23,415 INFO L87 Difference]: Start difference. First operand 68 states and 74 transitions. Second operand has 32 states, 31 states have (on average 1.935483870967742) internal successors, (60), 28 states have internal predecessors, (60), 12 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 12 states have call predecessors, (13), 10 states have call successors, (13) [2022-11-16 12:15:24,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:15:24,947 INFO L93 Difference]: Finished difference Result 68 states and 74 transitions. [2022-11-16 12:15:24,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-16 12:15:24,948 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 1.935483870967742) internal successors, (60), 28 states have internal predecessors, (60), 12 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 12 states have call predecessors, (13), 10 states have call successors, (13) Word has length 60 [2022-11-16 12:15:24,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:15:24,948 INFO L225 Difference]: With dead ends: 68 [2022-11-16 12:15:24,948 INFO L226 Difference]: Without dead ends: 0 [2022-11-16 12:15:24,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 89 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 465 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=397, Invalid=1495, Unknown=0, NotChecked=0, Total=1892 [2022-11-16 12:15:24,951 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 62 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 43 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-16 12:15:24,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 121 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 205 Invalid, 0 Unknown, 43 Unchecked, 0.6s Time] [2022-11-16 12:15:24,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-16 12:15:24,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-16 12:15:24,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:15:24,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-16 12:15:24,952 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 60 [2022-11-16 12:15:24,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:15:24,953 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-16 12:15:24,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 1.935483870967742) internal successors, (60), 28 states have internal predecessors, (60), 12 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 12 states have call predecessors, (13), 10 states have call successors, (13) [2022-11-16 12:15:24,953 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-16 12:15:24,953 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-16 12:15:24,956 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-16 12:15:24,969 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730a09bc-b838-4ff2-a531-6e679c3e8dcc/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-16 12:15:25,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730a09bc-b838-4ff2-a531-6e679c3e8dcc/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:15:25,159 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-16 12:15:30,739 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-16 12:15:30,739 INFO L902 garLoopResultBuilder]: At program point L27(line 27) the Hoare annotation is: true [2022-11-16 12:15:30,739 INFO L895 garLoopResultBuilder]: At program point L27-1(line 27) the Hoare annotation is: (and (<= 0 |ULTIMATE.start_main_~b~0#1|) (<= |ULTIMATE.start_main_~b~0#1| 5)) [2022-11-16 12:15:30,740 INFO L902 garLoopResultBuilder]: At program point L25(line 25) the Hoare annotation is: true [2022-11-16 12:15:30,740 INFO L899 garLoopResultBuilder]: For program point L25-1(line 25) no Hoare annotation was computed. [2022-11-16 12:15:30,740 INFO L902 garLoopResultBuilder]: At program point L48(lines 20 49) the Hoare annotation is: true [2022-11-16 12:15:30,740 INFO L899 garLoopResultBuilder]: For program point L46(line 46) no Hoare annotation was computed. [2022-11-16 12:15:30,740 INFO L895 garLoopResultBuilder]: At program point L34-2(lines 34 45) the Hoare annotation is: (let ((.cse3 (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|)) (.cse1 (<= |ULTIMATE.start_main_~b~0#1| 5)) (.cse2 (<= 1 |ULTIMATE.start_main_~b~0#1|))) (or (let ((.cse0 (+ |ULTIMATE.start_main_~y~0#1| 1))) (and (<= 1 (mod .cse0 2)) .cse1 .cse2 (= (+ |ULTIMATE.start_main_~z~0#1| (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)) .cse3) (<= |ULTIMATE.start_main_~y~0#1| 1) (<= 0 .cse0))) (and (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) .cse1 .cse2 (= |ULTIMATE.start_main_~z~0#1| 0) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|)) (and (<= |ULTIMATE.start_main_~y~0#1| 2) (exists ((|aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63| Int) (|aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63| Int) (|aux_div_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52| Int)) (let ((.cse7 (* |aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63| 2))) (let ((.cse4 (+ .cse7 |aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63|)) (.cse5 (+ .cse7 |aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63| (* |aux_div_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52| 2)))) (and (<= 0 .cse4) (<= 0 .cse5) (< .cse4 2) (<= 0 |aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63|) (= (let ((.cse6 (div |ULTIMATE.start_main_~x~0#1| 2))) (+ |ULTIMATE.start_main_~z~0#1| (* 2 (* .cse6 |ULTIMATE.start_main_~y~0#1|)) (* .cse6 |aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63|) (* (* |aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63| .cse6) 2))) .cse3) (not (= .cse5 1)) (<= 0 (+ (* 2 |ULTIMATE.start_main_~y~0#1|) |aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63|)) (< |aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63| 2) (< .cse5 2))))) .cse1 .cse2 (= (mod |ULTIMATE.start_main_~x~0#1| 2) 0)))) [2022-11-16 12:15:30,740 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-11-16 12:15:30,741 INFO L895 garLoopResultBuilder]: At program point L34-3(lines 34 45) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|))) (and (<= 1 |ULTIMATE.start_main_~b~0#1|) (= |ULTIMATE.start_main_~z~0#1| .cse0) (or (not (<= 1 (mod |ULTIMATE.start_main_~y~0#1| 2))) (< |ULTIMATE.start_main_~y~0#1| 0) (= (+ (* 2 (* (div (+ (- 1) |ULTIMATE.start_main_~y~0#1|) 2) |ULTIMATE.start_main_~x~0#1|)) |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|) .cse0)))) [2022-11-16 12:15:30,741 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-16 12:15:30,741 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-11-16 12:15:30,741 INFO L899 garLoopResultBuilder]: For program point L28(line 28) no Hoare annotation was computed. [2022-11-16 12:15:30,741 INFO L899 garLoopResultBuilder]: For program point L39(lines 39 42) no Hoare annotation was computed. [2022-11-16 12:15:30,741 INFO L899 garLoopResultBuilder]: For program point L39-2(lines 39 42) no Hoare annotation was computed. [2022-11-16 12:15:30,742 INFO L895 garLoopResultBuilder]: At program point L35(line 35) the Hoare annotation is: (let ((.cse3 (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|)) (.cse1 (<= |ULTIMATE.start_main_~b~0#1| 5)) (.cse2 (<= 1 |ULTIMATE.start_main_~b~0#1|))) (or (let ((.cse0 (+ |ULTIMATE.start_main_~y~0#1| 1))) (and (<= 1 (mod .cse0 2)) .cse1 .cse2 (= (+ |ULTIMATE.start_main_~z~0#1| (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)) .cse3) (<= |ULTIMATE.start_main_~y~0#1| 1) (<= 0 .cse0))) (and (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) .cse1 .cse2 (= |ULTIMATE.start_main_~z~0#1| 0) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|)) (and (<= |ULTIMATE.start_main_~y~0#1| 2) (exists ((|aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63| Int) (|aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63| Int) (|aux_div_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52| Int)) (let ((.cse7 (* |aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63| 2))) (let ((.cse4 (+ .cse7 |aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63|)) (.cse5 (+ .cse7 |aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63| (* |aux_div_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52| 2)))) (and (<= 0 .cse4) (<= 0 .cse5) (< .cse4 2) (<= 0 |aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63|) (= (let ((.cse6 (div |ULTIMATE.start_main_~x~0#1| 2))) (+ |ULTIMATE.start_main_~z~0#1| (* 2 (* .cse6 |ULTIMATE.start_main_~y~0#1|)) (* .cse6 |aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63|) (* (* |aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63| .cse6) 2))) .cse3) (not (= .cse5 1)) (<= 0 (+ (* 2 |ULTIMATE.start_main_~y~0#1|) |aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63|)) (< |aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63| 2) (< .cse5 2))))) .cse1 .cse2 (= (mod |ULTIMATE.start_main_~x~0#1| 2) 0)))) [2022-11-16 12:15:30,742 INFO L899 garLoopResultBuilder]: For program point L35-1(lines 34 45) no Hoare annotation was computed. [2022-11-16 12:15:30,742 INFO L902 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 9 11) the Hoare annotation is: true [2022-11-16 12:15:30,742 INFO L899 garLoopResultBuilder]: For program point L10(line 10) no Hoare annotation was computed. [2022-11-16 12:15:30,742 INFO L899 garLoopResultBuilder]: For program point L10-2(lines 9 11) no Hoare annotation was computed. [2022-11-16 12:15:30,742 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 9 11) no Hoare annotation was computed. [2022-11-16 12:15:30,742 INFO L902 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 12 18) the Hoare annotation is: true [2022-11-16 12:15:30,742 INFO L899 garLoopResultBuilder]: For program point L14(lines 14 15) no Hoare annotation was computed. [2022-11-16 12:15:30,742 INFO L899 garLoopResultBuilder]: For program point L13(lines 13 16) no Hoare annotation was computed. [2022-11-16 12:15:30,742 INFO L899 garLoopResultBuilder]: For program point L13-2(lines 12 18) no Hoare annotation was computed. [2022-11-16 12:15:30,742 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 12 18) no Hoare annotation was computed. [2022-11-16 12:15:30,743 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 15) no Hoare annotation was computed. [2022-11-16 12:15:30,748 INFO L444 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1, 1] [2022-11-16 12:15:30,750 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 12:15:30,769 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63,QUANTIFIED] [2022-11-16 12:15:30,774 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63,QUANTIFIED] [2022-11-16 12:15:30,774 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63,QUANTIFIED] [2022-11-16 12:15:30,774 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63,QUANTIFIED] [2022-11-16 12:15:30,775 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52,QUANTIFIED] [2022-11-16 12:15:30,775 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63,QUANTIFIED] [2022-11-16 12:15:30,775 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63,QUANTIFIED] [2022-11-16 12:15:30,775 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63,QUANTIFIED] [2022-11-16 12:15:30,776 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63,QUANTIFIED] [2022-11-16 12:15:30,776 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63,QUANTIFIED] [2022-11-16 12:15:30,776 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63,QUANTIFIED] [2022-11-16 12:15:30,776 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63,QUANTIFIED] [2022-11-16 12:15:30,777 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52,QUANTIFIED] [2022-11-16 12:15:30,777 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63,QUANTIFIED] [2022-11-16 12:15:30,777 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63,QUANTIFIED] [2022-11-16 12:15:30,777 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63,QUANTIFIED] [2022-11-16 12:15:30,777 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63,QUANTIFIED] [2022-11-16 12:15:30,778 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52,QUANTIFIED] [2022-11-16 12:15:30,786 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63,QUANTIFIED] [2022-11-16 12:15:30,787 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63,QUANTIFIED] [2022-11-16 12:15:30,787 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63,QUANTIFIED] [2022-11-16 12:15:30,787 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63,QUANTIFIED] [2022-11-16 12:15:30,787 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52,QUANTIFIED] [2022-11-16 12:15:30,788 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63,QUANTIFIED] [2022-11-16 12:15:30,788 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63,QUANTIFIED] [2022-11-16 12:15:30,788 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63,QUANTIFIED] [2022-11-16 12:15:30,788 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63,QUANTIFIED] [2022-11-16 12:15:30,788 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63,QUANTIFIED] [2022-11-16 12:15:30,789 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63,QUANTIFIED] [2022-11-16 12:15:30,789 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63,QUANTIFIED] [2022-11-16 12:15:30,789 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52,QUANTIFIED] [2022-11-16 12:15:30,789 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63,QUANTIFIED] [2022-11-16 12:15:30,790 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63,QUANTIFIED] [2022-11-16 12:15:30,790 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63,QUANTIFIED] [2022-11-16 12:15:30,790 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63,QUANTIFIED] [2022-11-16 12:15:30,790 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52,QUANTIFIED] [2022-11-16 12:15:30,792 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 12:15:30 BoogieIcfgContainer [2022-11-16 12:15:30,792 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 12:15:30,793 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 12:15:30,793 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 12:15:30,793 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 12:15:30,793 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:14:16" (3/4) ... [2022-11-16 12:15:30,797 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-16 12:15:30,803 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2022-11-16 12:15:30,803 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2022-11-16 12:15:30,806 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2022-11-16 12:15:30,806 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-16 12:15:30,807 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-16 12:15:30,807 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-16 12:15:30,827 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((1 <= (y + 1) % 2 && b <= 5) && 1 <= b) && z + x * y == a * b) && y <= 1) && 0 <= y + 1) || ((((b == y && b <= 5) && 1 <= b) && z == 0) && a == x)) || ((((y <= 2 && (\exists aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63 : int, aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63 : int, aux_div_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52 : int :: (((((((0 <= aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63 * 2 + aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63 && 0 <= aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63 * 2 + aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63 + aux_div_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52 * 2) && aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63 * 2 + aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63 < 2) && 0 <= aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63) && z + 2 * (x / 2 * y) + x / 2 * aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63 + aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63 * (x / 2) * 2 == a * b) && !(aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63 * 2 + aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63 + aux_div_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52 * 2 == 1)) && 0 <= 2 * y + aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63) && aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63 < 2) && aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63 * 2 + aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63 + aux_div_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52 * 2 < 2)) && b <= 5) && 1 <= b) && x % 2 == 0) [2022-11-16 12:15:30,838 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730a09bc-b838-4ff2-a531-6e679c3e8dcc/bin/uautomizer-tPACEb0tL8/witness.graphml [2022-11-16 12:15:30,838 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 12:15:30,839 INFO L158 Benchmark]: Toolchain (without parser) took 75223.70ms. Allocated memory is still 155.2MB. Free memory was 121.3MB in the beginning and 65.8MB in the end (delta: 55.5MB). Peak memory consumption was 55.5MB. Max. memory is 16.1GB. [2022-11-16 12:15:30,847 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 86.0MB. Free memory was 57.2MB in the beginning and 57.2MB in the end (delta: 27.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 12:15:30,848 INFO L158 Benchmark]: CACSL2BoogieTranslator took 445.37ms. Allocated memory is still 155.2MB. Free memory was 121.3MB in the beginning and 132.0MB in the end (delta: -10.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-16 12:15:30,848 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.98ms. Allocated memory is still 155.2MB. Free memory was 131.7MB in the beginning and 129.9MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 12:15:30,848 INFO L158 Benchmark]: Boogie Preprocessor took 34.86ms. Allocated memory is still 155.2MB. Free memory was 129.9MB in the beginning and 128.7MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 12:15:30,849 INFO L158 Benchmark]: RCFGBuilder took 348.56ms. Allocated memory is still 155.2MB. Free memory was 128.7MB in the beginning and 118.2MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-16 12:15:30,849 INFO L158 Benchmark]: TraceAbstraction took 74295.38ms. Allocated memory is still 155.2MB. Free memory was 117.3MB in the beginning and 68.9MB in the end (delta: 48.4MB). Peak memory consumption was 50.2MB. Max. memory is 16.1GB. [2022-11-16 12:15:30,850 INFO L158 Benchmark]: Witness Printer took 45.47ms. Allocated memory is still 155.2MB. Free memory was 68.9MB in the beginning and 65.8MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-16 12:15:30,852 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 86.0MB. Free memory was 57.2MB in the beginning and 57.2MB in the end (delta: 27.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 445.37ms. Allocated memory is still 155.2MB. Free memory was 121.3MB in the beginning and 132.0MB in the end (delta: -10.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.98ms. Allocated memory is still 155.2MB. Free memory was 131.7MB in the beginning and 129.9MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 34.86ms. Allocated memory is still 155.2MB. Free memory was 129.9MB in the beginning and 128.7MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 348.56ms. Allocated memory is still 155.2MB. Free memory was 128.7MB in the beginning and 118.2MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 74295.38ms. Allocated memory is still 155.2MB. Free memory was 117.3MB in the beginning and 68.9MB in the end (delta: 48.4MB). Peak memory consumption was 50.2MB. Max. memory is 16.1GB. * Witness Printer took 45.47ms. Allocated memory is still 155.2MB. Free memory was 68.9MB in the beginning and 65.8MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 15]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 74.2s, OverallIterations: 9, TraceHistogramMax: 5, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 34.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 5.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 5 mSolverCounterUnknown, 206 SdHoareTripleChecker+Valid, 18.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 199 mSDsluCounter, 916 SdHoareTripleChecker+Invalid, 18.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 73 IncrementalHoareTripleChecker+Unchecked, 728 mSDsCounter, 107 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1133 IncrementalHoareTripleChecker+Invalid, 1318 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 107 mSolverCounterUnsat, 188 mSDtfsCounter, 1133 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 642 GetRequests, 493 SyntacticMatches, 6 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 769 ImplicationChecksByTransitivity, 36.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=79occurred in iteration=7, InterpolantAutomatonStates: 93, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 26 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 31 PreInvPairs, 53 NumberOfFragments, 343 HoareAnnotationTreeSize, 31 FomulaSimplifications, 388 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 1516 FormulaSimplificationTreeSizeReductionInter, 5.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 30.5s InterpolantComputationTime, 369 NumberOfCodeBlocks, 369 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 597 ConstructedInterpolants, 3 QuantifiedInterpolants, 3447 SizeOfPredicates, 29 NumberOfNonLiveVariables, 926 ConjunctsInSsa, 170 ConjunctsInUnsatCore, 15 InterpolantComputations, 4 PerfectInterpolantSequences, 445/534 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 34]: Loop Invariant [2022-11-16 12:15:30,878 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63,QUANTIFIED] [2022-11-16 12:15:30,878 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63,QUANTIFIED] [2022-11-16 12:15:30,879 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63,QUANTIFIED] [2022-11-16 12:15:30,879 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63,QUANTIFIED] [2022-11-16 12:15:30,880 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52,QUANTIFIED] [2022-11-16 12:15:30,880 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63,QUANTIFIED] [2022-11-16 12:15:30,880 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63,QUANTIFIED] [2022-11-16 12:15:30,881 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63,QUANTIFIED] [2022-11-16 12:15:30,881 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63,QUANTIFIED] [2022-11-16 12:15:30,881 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63,QUANTIFIED] [2022-11-16 12:15:30,881 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63,QUANTIFIED] [2022-11-16 12:15:30,882 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63,QUANTIFIED] [2022-11-16 12:15:30,883 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52,QUANTIFIED] [2022-11-16 12:15:30,883 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63,QUANTIFIED] [2022-11-16 12:15:30,884 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63,QUANTIFIED] [2022-11-16 12:15:30,884 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63,QUANTIFIED] [2022-11-16 12:15:30,884 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63,QUANTIFIED] [2022-11-16 12:15:30,884 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52,QUANTIFIED] [2022-11-16 12:15:30,885 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63,QUANTIFIED] [2022-11-16 12:15:30,885 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63,QUANTIFIED] [2022-11-16 12:15:30,885 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63,QUANTIFIED] [2022-11-16 12:15:30,885 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63,QUANTIFIED] [2022-11-16 12:15:30,885 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52,QUANTIFIED] [2022-11-16 12:15:30,885 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63,QUANTIFIED] [2022-11-16 12:15:30,885 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63,QUANTIFIED] [2022-11-16 12:15:30,886 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63,QUANTIFIED] [2022-11-16 12:15:30,886 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63,QUANTIFIED] [2022-11-16 12:15:30,886 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63,QUANTIFIED] [2022-11-16 12:15:30,886 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63,QUANTIFIED] [2022-11-16 12:15:30,886 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63,QUANTIFIED] [2022-11-16 12:15:30,886 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52,QUANTIFIED] [2022-11-16 12:15:30,886 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63,QUANTIFIED] [2022-11-16 12:15:30,886 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63,QUANTIFIED] [2022-11-16 12:15:30,887 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63,QUANTIFIED] [2022-11-16 12:15:30,887 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63,QUANTIFIED] [2022-11-16 12:15:30,887 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52,QUANTIFIED] Derived loop invariant: ((((((1 <= (y + 1) % 2 && b <= 5) && 1 <= b) && z + x * y == a * b) && y <= 1) && 0 <= y + 1) || ((((b == y && b <= 5) && 1 <= b) && z == 0) && a == x)) || ((((y <= 2 && (\exists aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63 : int, aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63 : int, aux_div_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52 : int :: (((((((0 <= aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63 * 2 + aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63 && 0 <= aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63 * 2 + aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63 + aux_div_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52 * 2) && aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63 * 2 + aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63 < 2) && 0 <= aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63) && z + 2 * (x / 2 * y) + x / 2 * aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63 + aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63 * (x / 2) * 2 == a * b) && !(aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63 * 2 + aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63 + aux_div_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52 * 2 == 1)) && 0 <= 2 * y + aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63) && aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63 < 2) && aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63 * 2 + aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52_63 + aux_div_aux_mod_v_ULTIMATE.start_main_~y~0#1_47_41_52 * 2 < 2)) && b <= 5) && 1 <= b) && x % 2 == 0) - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-11-16 12:15:30,928 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730a09bc-b838-4ff2-a531-6e679c3e8dcc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE