./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-lopstr16/motivex.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4198370f-9cfe-4744-a1ca-e2b38eac64d3/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4198370f-9cfe-4744-a1ca-e2b38eac64d3/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4198370f-9cfe-4744-a1ca-e2b38eac64d3/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4198370f-9cfe-4744-a1ca-e2b38eac64d3/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-lopstr16/motivex.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4198370f-9cfe-4744-a1ca-e2b38eac64d3/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4198370f-9cfe-4744-a1ca-e2b38eac64d3/bin/uautomizer-J5u9QxTXDZ --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 849df4b411c63057254dcf3e90c1516f0bf7c8598b238d4e2298c0311f6d39f4 --- 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-dbf71c6-m [2022-10-17 10:10:49,007 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:10:49,010 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:10:49,064 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:10:49,065 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:10:49,071 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:10:49,074 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:10:49,078 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:10:49,084 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:10:49,090 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:10:49,091 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:10:49,094 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:10:49,094 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:10:49,097 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:10:49,098 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:10:49,100 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:10:49,103 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:10:49,104 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:10:49,106 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:10:49,116 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:10:49,118 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:10:49,123 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:10:49,127 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:10:49,129 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:10:49,139 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:10:49,139 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:10:49,140 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:10:49,142 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:10:49,143 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:10:49,145 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:10:49,146 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:10:49,147 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:10:49,149 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:10:49,151 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:10:49,152 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:10:49,152 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:10:49,153 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:10:49,153 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:10:49,153 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:10:49,154 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:10:49,155 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:10:49,156 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4198370f-9cfe-4744-a1ca-e2b38eac64d3/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 10:10:49,202 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:10:49,203 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:10:49,203 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:10:49,203 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:10:49,204 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:10:49,205 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:10:49,205 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:10:49,205 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:10:49,206 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:10:49,206 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:10:49,207 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:10:49,207 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:10:49,208 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:10:49,208 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:10:49,208 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:10:49,208 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:10:49,208 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:10:49,209 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:10:49,209 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:10:49,209 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:10:49,209 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:10:49,210 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:10:49,210 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:10:49,210 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:10:49,210 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:10:49,210 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:10:49,211 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:10:49,211 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:10:49,211 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:10:49,211 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:10:49,212 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:10:49,212 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:10:49,212 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:10:49,212 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_4198370f-9cfe-4744-a1ca-e2b38eac64d3/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4198370f-9cfe-4744-a1ca-e2b38eac64d3/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 849df4b411c63057254dcf3e90c1516f0bf7c8598b238d4e2298c0311f6d39f4 [2022-10-17 10:10:49,501 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:10:49,526 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:10:49,530 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:10:49,531 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:10:49,532 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:10:49,533 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4198370f-9cfe-4744-a1ca-e2b38eac64d3/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/array-lopstr16/motivex.i [2022-10-17 10:10:49,598 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4198370f-9cfe-4744-a1ca-e2b38eac64d3/bin/uautomizer-J5u9QxTXDZ/data/184dc043d/2b0180f7319448acb1b1860b1592c001/FLAGd6bc356c4 [2022-10-17 10:10:50,051 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:10:50,053 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4198370f-9cfe-4744-a1ca-e2b38eac64d3/sv-benchmarks/c/array-lopstr16/motivex.i [2022-10-17 10:10:50,073 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4198370f-9cfe-4744-a1ca-e2b38eac64d3/bin/uautomizer-J5u9QxTXDZ/data/184dc043d/2b0180f7319448acb1b1860b1592c001/FLAGd6bc356c4 [2022-10-17 10:10:50,436 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4198370f-9cfe-4744-a1ca-e2b38eac64d3/bin/uautomizer-J5u9QxTXDZ/data/184dc043d/2b0180f7319448acb1b1860b1592c001 [2022-10-17 10:10:50,439 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:10:50,442 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:10:50,445 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:10:50,445 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:10:50,448 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:10:50,449 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:10:50" (1/1) ... [2022-10-17 10:10:50,451 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b30cc54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:10:50, skipping insertion in model container [2022-10-17 10:10:50,451 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:10:50" (1/1) ... [2022-10-17 10:10:50,458 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:10:50,475 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:10:50,663 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4198370f-9cfe-4744-a1ca-e2b38eac64d3/sv-benchmarks/c/array-lopstr16/motivex.i[800,813] [2022-10-17 10:10:50,684 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:10:51,052 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:10:51,066 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4198370f-9cfe-4744-a1ca-e2b38eac64d3/sv-benchmarks/c/array-lopstr16/motivex.i[800,813] [2022-10-17 10:10:51,085 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:10:51,100 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:10:51,100 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:10:51 WrapperNode [2022-10-17 10:10:51,100 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:10:51,102 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:10:51,102 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:10:51,102 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:10:51,110 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:10:51" (1/1) ... [2022-10-17 10:10:51,126 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:10:51" (1/1) ... [2022-10-17 10:10:51,157 INFO L138 Inliner]: procedures = 15, calls = 17, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 71 [2022-10-17 10:10:51,157 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:10:51,158 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:10:51,158 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:10:51,158 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:10:51,168 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:10:51" (1/1) ... [2022-10-17 10:10:51,168 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:10:51" (1/1) ... [2022-10-17 10:10:51,172 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:10:51" (1/1) ... [2022-10-17 10:10:51,173 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:10:51" (1/1) ... [2022-10-17 10:10:51,188 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:10:51" (1/1) ... [2022-10-17 10:10:51,194 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:10:51" (1/1) ... [2022-10-17 10:10:51,200 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:10:51" (1/1) ... [2022-10-17 10:10:51,201 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:10:51" (1/1) ... [2022-10-17 10:10:51,203 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:10:51,204 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:10:51,204 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:10:51,205 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:10:51,208 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:10:51" (1/1) ... [2022-10-17 10:10:51,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:10:51,230 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4198370f-9cfe-4744-a1ca-e2b38eac64d3/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:10:51,247 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4198370f-9cfe-4744-a1ca-e2b38eac64d3/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:10:51,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4198370f-9cfe-4744-a1ca-e2b38eac64d3/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:10:51,304 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:10:51,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:10:51,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 10:10:51,305 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:10:51,305 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:10:51,305 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 10:10:51,380 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:10:51,382 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:10:51,581 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:10:51,588 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:10:51,592 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-10-17 10:10:51,594 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:10:51 BoogieIcfgContainer [2022-10-17 10:10:51,594 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:10:51,597 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:10:51,600 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:10:51,603 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:10:51,603 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:10:50" (1/3) ... [2022-10-17 10:10:51,604 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@149a81db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:10:51, skipping insertion in model container [2022-10-17 10:10:51,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:10:51" (2/3) ... [2022-10-17 10:10:51,606 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@149a81db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:10:51, skipping insertion in model container [2022-10-17 10:10:51,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:10:51" (3/3) ... [2022-10-17 10:10:51,611 INFO L112 eAbstractionObserver]: Analyzing ICFG motivex.i [2022-10-17 10:10:51,642 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:10:51,642 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 10:10:51,689 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:10:51,697 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;@497421ad, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:10:51,697 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 10:10:51,701 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 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) [2022-10-17 10:10:51,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-10-17 10:10:51,708 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:10:51,708 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:10:51,709 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:10:51,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:10:51,714 INFO L85 PathProgramCache]: Analyzing trace with hash 542545282, now seen corresponding path program 1 times [2022-10-17 10:10:51,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:10:51,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922593437] [2022-10-17 10:10:51,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:10:51,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:10:51,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:10:51,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:10:51,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922593437] [2022-10-17 10:10:51,856 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-10-17 10:10:51,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [67795832] [2022-10-17 10:10:51,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:10:51,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:10:51,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4198370f-9cfe-4744-a1ca-e2b38eac64d3/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:10:51,858 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4198370f-9cfe-4744-a1ca-e2b38eac64d3/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:10:51,862 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4198370f-9cfe-4744-a1ca-e2b38eac64d3/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-17 10:10:51,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:10:51,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 1 conjunts are in the unsatisfiable core [2022-10-17 10:10:51,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:10:51,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:10:51,951 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:10:51,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [67795832] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:10:51,952 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:10:51,952 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:10:51,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796108286] [2022-10-17 10:10:51,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:10:51,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-17 10:10:51,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:10:51,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-17 10:10:51,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 10:10:51,990 INFO L87 Difference]: Start difference. First operand has 21 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 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) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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) [2022-10-17 10:10:52,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:10:52,005 INFO L93 Difference]: Finished difference Result 38 states and 52 transitions. [2022-10-17 10:10:52,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-17 10:10:52,007 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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) Word has length 11 [2022-10-17 10:10:52,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:10:52,015 INFO L225 Difference]: With dead ends: 38 [2022-10-17 10:10:52,015 INFO L226 Difference]: Without dead ends: 17 [2022-10-17 10:10:52,018 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 10:10:52,022 INFO L413 NwaCegarLoop]: 25 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, 25 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 [2022-10-17 10:10:52,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:10:52,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-10-17 10:10:52,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-10-17 10:10:52,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 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) [2022-10-17 10:10:52,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2022-10-17 10:10:52,055 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 11 [2022-10-17 10:10:52,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:10:52,055 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2022-10-17 10:10:52,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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) [2022-10-17 10:10:52,056 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2022-10-17 10:10:52,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-10-17 10:10:52,057 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:10:52,057 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:10:52,096 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4198370f-9cfe-4744-a1ca-e2b38eac64d3/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-17 10:10:52,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4198370f-9cfe-4744-a1ca-e2b38eac64d3/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-10-17 10:10:52,278 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:10:52,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:10:52,279 INFO L85 PathProgramCache]: Analyzing trace with hash -630060617, now seen corresponding path program 1 times [2022-10-17 10:10:52,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:10:52,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305226366] [2022-10-17 10:10:52,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:10:52,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:10:52,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:10:52,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:10:52,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305226366] [2022-10-17 10:10:52,314 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-10-17 10:10:52,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1189002271] [2022-10-17 10:10:52,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:10:52,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:10:52,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4198370f-9cfe-4744-a1ca-e2b38eac64d3/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:10:52,316 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4198370f-9cfe-4744-a1ca-e2b38eac64d3/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:10:52,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4198370f-9cfe-4744-a1ca-e2b38eac64d3/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-17 10:10:52,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:10:52,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 2 conjunts are in the unsatisfiable core [2022-10-17 10:10:52,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:10:52,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:10:52,414 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:10:52,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1189002271] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:10:52,415 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:10:52,415 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:10:52,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914415380] [2022-10-17 10:10:52,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:10:52,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:10:52,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:10:52,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:10:52,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:10:52,417 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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) [2022-10-17 10:10:52,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:10:52,463 INFO L93 Difference]: Finished difference Result 43 states and 54 transitions. [2022-10-17 10:10:52,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:10:52,471 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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) Word has length 11 [2022-10-17 10:10:52,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:10:52,472 INFO L225 Difference]: With dead ends: 43 [2022-10-17 10:10:52,472 INFO L226 Difference]: Without dead ends: 30 [2022-10-17 10:10:52,473 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:10:52,474 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 12 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:10:52,475 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 21 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:10:52,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-10-17 10:10:52,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 19. [2022-10-17 10:10:52,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 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) [2022-10-17 10:10:52,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2022-10-17 10:10:52,484 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 11 [2022-10-17 10:10:52,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:10:52,484 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2022-10-17 10:10:52,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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) [2022-10-17 10:10:52,485 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2022-10-17 10:10:52,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-10-17 10:10:52,485 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:10:52,485 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:10:52,509 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4198370f-9cfe-4744-a1ca-e2b38eac64d3/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-17 10:10:52,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4198370f-9cfe-4744-a1ca-e2b38eac64d3/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:10:52,686 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:10:52,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:10:52,687 INFO L85 PathProgramCache]: Analyzing trace with hash 2036151027, now seen corresponding path program 1 times [2022-10-17 10:10:52,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:10:52,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731574441] [2022-10-17 10:10:52,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:10:52,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:10:52,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:10:52,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:10:52,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731574441] [2022-10-17 10:10:52,745 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-10-17 10:10:52,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [958470623] [2022-10-17 10:10:52,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:10:52,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:10:52,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4198370f-9cfe-4744-a1ca-e2b38eac64d3/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:10:52,753 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4198370f-9cfe-4744-a1ca-e2b38eac64d3/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:10:52,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4198370f-9cfe-4744-a1ca-e2b38eac64d3/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-17 10:10:52,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:10:52,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-17 10:10:52,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:10:52,848 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-17 10:10:52,848 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:10:52,874 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-17 10:10:52,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [958470623] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:10:52,875 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-17 10:10:52,875 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-10-17 10:10:52,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243988695] [2022-10-17 10:10:52,875 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-17 10:10:52,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:10:52,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:10:52,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:10:52,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:10:52,878 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 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) [2022-10-17 10:10:53,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:10:53,034 INFO L93 Difference]: Finished difference Result 73 states and 92 transitions. [2022-10-17 10:10:53,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-17 10:10:53,035 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 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) Word has length 16 [2022-10-17 10:10:53,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:10:53,036 INFO L225 Difference]: With dead ends: 73 [2022-10-17 10:10:53,036 INFO L226 Difference]: Without dead ends: 59 [2022-10-17 10:10:53,037 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:10:53,039 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 94 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:10:53,039 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 35 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:10:53,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-10-17 10:10:53,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 34. [2022-10-17 10:10:53,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.2424242424242424) internal successors, (41), 33 states have internal predecessors, (41), 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) [2022-10-17 10:10:53,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 41 transitions. [2022-10-17 10:10:53,052 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 41 transitions. Word has length 16 [2022-10-17 10:10:53,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:10:53,053 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 41 transitions. [2022-10-17 10:10:53,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 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) [2022-10-17 10:10:53,054 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 41 transitions. [2022-10-17 10:10:53,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-10-17 10:10:53,055 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:10:53,056 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:10:53,085 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4198370f-9cfe-4744-a1ca-e2b38eac64d3/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-10-17 10:10:53,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4198370f-9cfe-4744-a1ca-e2b38eac64d3/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:10:53,266 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:10:53,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:10:53,267 INFO L85 PathProgramCache]: Analyzing trace with hash -1366955217, now seen corresponding path program 2 times [2022-10-17 10:10:53,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:10:53,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705195332] [2022-10-17 10:10:53,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:10:53,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:10:53,311 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:10:53,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [482626628] [2022-10-17 10:10:53,317 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-17 10:10:53,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:10:53,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4198370f-9cfe-4744-a1ca-e2b38eac64d3/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:10:53,319 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4198370f-9cfe-4744-a1ca-e2b38eac64d3/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:10:53,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4198370f-9cfe-4744-a1ca-e2b38eac64d3/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-10-17 10:10:53,420 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-17 10:10:53,420 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-17 10:10:53,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 6 conjunts are in the unsatisfiable core [2022-10-17 10:10:53,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:10:53,475 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-10-17 10:10:53,475 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:10:53,548 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-10-17 10:10:53,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:10:53,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705195332] [2022-10-17 10:10:53,549 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 10:10:53,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [482626628] [2022-10-17 10:10:53,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [482626628] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:10:53,549 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-17 10:10:53,550 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-10-17 10:10:53,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640639773] [2022-10-17 10:10:53,550 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-17 10:10:53,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-10-17 10:10:53,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:10:53,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-10-17 10:10:53,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-10-17 10:10:53,552 INFO L87 Difference]: Start difference. First operand 34 states and 41 transitions. Second operand has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 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) [2022-10-17 10:10:53,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:10:53,773 INFO L93 Difference]: Finished difference Result 160 states and 200 transitions. [2022-10-17 10:10:53,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-10-17 10:10:53,774 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 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) Word has length 31 [2022-10-17 10:10:53,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:10:53,781 INFO L225 Difference]: With dead ends: 160 [2022-10-17 10:10:53,781 INFO L226 Difference]: Without dead ends: 137 [2022-10-17 10:10:53,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-10-17 10:10:53,788 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 219 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-17 10:10:53,789 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 80 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-17 10:10:53,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2022-10-17 10:10:53,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 64. [2022-10-17 10:10:53,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.2222222222222223) internal successors, (77), 63 states have internal predecessors, (77), 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) [2022-10-17 10:10:53,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 77 transitions. [2022-10-17 10:10:53,806 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 77 transitions. Word has length 31 [2022-10-17 10:10:53,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:10:53,806 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 77 transitions. [2022-10-17 10:10:53,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 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) [2022-10-17 10:10:53,807 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 77 transitions. [2022-10-17 10:10:53,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-10-17 10:10:53,809 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:10:53,809 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:10:53,846 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4198370f-9cfe-4744-a1ca-e2b38eac64d3/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-10-17 10:10:54,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4198370f-9cfe-4744-a1ca-e2b38eac64d3/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-10-17 10:10:54,034 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:10:54,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:10:54,035 INFO L85 PathProgramCache]: Analyzing trace with hash 67273059, now seen corresponding path program 3 times [2022-10-17 10:10:54,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:10:54,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480807569] [2022-10-17 10:10:54,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:10:54,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:10:54,115 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:10:54,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1781890968] [2022-10-17 10:10:54,116 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-17 10:10:54,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:10:54,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4198370f-9cfe-4744-a1ca-e2b38eac64d3/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:10:54,117 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4198370f-9cfe-4744-a1ca-e2b38eac64d3/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:10:54,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4198370f-9cfe-4744-a1ca-e2b38eac64d3/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-10-17 10:10:59,319 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2022-10-17 10:10:59,319 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-17 10:10:59,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 12 conjunts are in the unsatisfiable core [2022-10-17 10:10:59,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:10:59,498 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-10-17 10:10:59,498 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:10:59,768 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-10-17 10:10:59,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:10:59,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480807569] [2022-10-17 10:10:59,768 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 10:10:59,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1781890968] [2022-10-17 10:10:59,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1781890968] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:10:59,769 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-17 10:10:59,769 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2022-10-17 10:10:59,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585680367] [2022-10-17 10:10:59,770 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-17 10:10:59,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-10-17 10:10:59,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:10:59,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-10-17 10:10:59,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2022-10-17 10:10:59,774 INFO L87 Difference]: Start difference. First operand 64 states and 77 transitions. Second operand has 24 states, 24 states have (on average 3.125) internal successors, (75), 24 states have internal predecessors, (75), 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) [2022-10-17 10:11:00,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:11:00,231 INFO L93 Difference]: Finished difference Result 334 states and 416 transitions. [2022-10-17 10:11:00,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-10-17 10:11:00,232 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.125) internal successors, (75), 24 states have internal predecessors, (75), 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) Word has length 61 [2022-10-17 10:11:00,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:11:00,234 INFO L225 Difference]: With dead ends: 334 [2022-10-17 10:11:00,234 INFO L226 Difference]: Without dead ends: 293 [2022-10-17 10:11:00,235 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2022-10-17 10:11:00,236 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 764 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 764 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-17 10:11:00,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [764 Valid, 163 Invalid, 360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-10-17 10:11:00,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2022-10-17 10:11:00,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 124. [2022-10-17 10:11:00,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 123 states have (on average 1.2113821138211383) internal successors, (149), 123 states have internal predecessors, (149), 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) [2022-10-17 10:11:00,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 149 transitions. [2022-10-17 10:11:00,254 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 149 transitions. Word has length 61 [2022-10-17 10:11:00,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:11:00,254 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 149 transitions. [2022-10-17 10:11:00,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 3.125) internal successors, (75), 24 states have internal predecessors, (75), 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) [2022-10-17 10:11:00,255 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 149 transitions. [2022-10-17 10:11:00,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-10-17 10:11:00,257 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:11:00,257 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:11:00,305 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4198370f-9cfe-4744-a1ca-e2b38eac64d3/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-10-17 10:11:00,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4198370f-9cfe-4744-a1ca-e2b38eac64d3/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:11:00,482 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:11:00,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:11:00,483 INFO L85 PathProgramCache]: Analyzing trace with hash 1367348683, now seen corresponding path program 4 times [2022-10-17 10:11:00,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:11:00,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889765381] [2022-10-17 10:11:00,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:11:00,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:11:00,610 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:11:00,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [191941296] [2022-10-17 10:11:00,612 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-10-17 10:11:00,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:11:00,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4198370f-9cfe-4744-a1ca-e2b38eac64d3/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:11:00,626 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4198370f-9cfe-4744-a1ca-e2b38eac64d3/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:11:00,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4198370f-9cfe-4744-a1ca-e2b38eac64d3/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-10-17 10:11:00,838 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-10-17 10:11:00,838 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-17 10:11:00,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 610 conjuncts, 24 conjunts are in the unsatisfiable core [2022-10-17 10:11:00,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:11:01,191 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2022-10-17 10:11:01,191 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:11:02,004 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2022-10-17 10:11:02,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:11:02,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889765381] [2022-10-17 10:11:02,005 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 10:11:02,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [191941296] [2022-10-17 10:11:02,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [191941296] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:11:02,006 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-17 10:11:02,006 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 48 [2022-10-17 10:11:02,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555102466] [2022-10-17 10:11:02,007 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-17 10:11:02,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-10-17 10:11:02,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:11:02,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-10-17 10:11:02,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2022-10-17 10:11:02,011 INFO L87 Difference]: Start difference. First operand 124 states and 149 transitions. Second operand has 48 states, 48 states have (on average 2.1666666666666665) internal successors, (104), 48 states have internal predecessors, (104), 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) [2022-10-17 10:11:03,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:11:03,219 INFO L93 Difference]: Finished difference Result 682 states and 848 transitions. [2022-10-17 10:11:03,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-10-17 10:11:03,220 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 2.1666666666666665) internal successors, (104), 48 states have internal predecessors, (104), 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) Word has length 121 [2022-10-17 10:11:03,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:11:03,224 INFO L225 Difference]: With dead ends: 682 [2022-10-17 10:11:03,224 INFO L226 Difference]: Without dead ends: 605 [2022-10-17 10:11:03,226 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2022-10-17 10:11:03,227 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 1608 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 337 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1608 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 337 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-10-17 10:11:03,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1608 Valid, 332 Invalid, 716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [337 Valid, 379 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-10-17 10:11:03,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2022-10-17 10:11:03,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 244. [2022-10-17 10:11:03,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 243 states have (on average 1.205761316872428) internal successors, (293), 243 states have internal predecessors, (293), 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) [2022-10-17 10:11:03,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 293 transitions. [2022-10-17 10:11:03,251 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 293 transitions. Word has length 121 [2022-10-17 10:11:03,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:11:03,251 INFO L495 AbstractCegarLoop]: Abstraction has 244 states and 293 transitions. [2022-10-17 10:11:03,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 2.1666666666666665) internal successors, (104), 48 states have internal predecessors, (104), 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) [2022-10-17 10:11:03,252 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 293 transitions. [2022-10-17 10:11:03,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2022-10-17 10:11:03,257 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:11:03,257 INFO L195 NwaCegarLoop]: trace histogram [46, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:11:03,284 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4198370f-9cfe-4744-a1ca-e2b38eac64d3/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-10-17 10:11:03,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4198370f-9cfe-4744-a1ca-e2b38eac64d3/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:11:03,466 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:11:03,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:11:03,467 INFO L85 PathProgramCache]: Analyzing trace with hash 1689247387, now seen corresponding path program 5 times [2022-10-17 10:11:03,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:11:03,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062783081] [2022-10-17 10:11:03,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:11:03,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:11:03,627 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:11:03,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [368704997] [2022-10-17 10:11:03,628 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-10-17 10:11:03,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:11:03,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4198370f-9cfe-4744-a1ca-e2b38eac64d3/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:11:03,629 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4198370f-9cfe-4744-a1ca-e2b38eac64d3/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:11:03,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4198370f-9cfe-4744-a1ca-e2b38eac64d3/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process