./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-ext/47_ticket_lock_hc_backoff_vs.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5241b76-a4dd-4093-9360-7a569b3ee8e3/bin/ugemcutter-C1kR7RIaUi/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5241b76-a4dd-4093-9360-7a569b3ee8e3/bin/ugemcutter-C1kR7RIaUi/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5241b76-a4dd-4093-9360-7a569b3ee8e3/bin/ugemcutter-C1kR7RIaUi/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5241b76-a4dd-4093-9360-7a569b3ee8e3/bin/ugemcutter-C1kR7RIaUi/config/GemCutterReach.xml -i ../../sv-benchmarks/c/pthread-ext/47_ticket_lock_hc_backoff_vs.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5241b76-a4dd-4093-9360-7a569b3ee8e3/bin/ugemcutter-C1kR7RIaUi/config/svcomp-Reach-32bit-GemCutter_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5241b76-a4dd-4093-9360-7a569b3ee8e3/bin/ugemcutter-C1kR7RIaUi --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 GemCutter --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 22ccde2ce516925ebfe813d783d47f1167b5115e5910734aa9e1bf526ce8c733 --- 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-5e519f3 [2022-11-04 12:05:27,042 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-04 12:05:27,045 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-04 12:05:27,096 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-04 12:05:27,096 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-04 12:05:27,100 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-04 12:05:27,103 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-04 12:05:27,107 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-04 12:05:27,110 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-04 12:05:27,115 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-04 12:05:27,117 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-04 12:05:27,119 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-04 12:05:27,120 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-04 12:05:27,123 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-04 12:05:27,125 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-04 12:05:27,127 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-04 12:05:27,129 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-04 12:05:27,130 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-04 12:05:27,131 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-04 12:05:27,140 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-04 12:05:27,142 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-04 12:05:27,144 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-04 12:05:27,147 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-04 12:05:27,148 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-04 12:05:27,157 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-04 12:05:27,157 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-04 12:05:27,158 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-04 12:05:27,159 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-04 12:05:27,160 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-04 12:05:27,161 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-04 12:05:27,162 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-04 12:05:27,163 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-04 12:05:27,165 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-04 12:05:27,167 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-04 12:05:27,169 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-04 12:05:27,169 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-04 12:05:27,170 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-04 12:05:27,171 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-04 12:05:27,171 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-04 12:05:27,172 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-04 12:05:27,173 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-04 12:05:27,174 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5241b76-a4dd-4093-9360-7a569b3ee8e3/bin/ugemcutter-C1kR7RIaUi/config/svcomp-Reach-32bit-GemCutter_Default.epf [2022-11-04 12:05:27,211 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-04 12:05:27,211 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-04 12:05:27,212 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-04 12:05:27,212 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-04 12:05:27,213 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-04 12:05:27,214 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-04 12:05:27,215 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-04 12:05:27,215 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-04 12:05:27,215 INFO L138 SettingsManager]: * Use SBE=true [2022-11-04 12:05:27,216 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-04 12:05:27,217 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-04 12:05:27,217 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-04 12:05:27,218 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-04 12:05:27,218 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-04 12:05:27,218 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-04 12:05:27,218 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-04 12:05:27,219 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-04 12:05:27,219 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-04 12:05:27,219 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-04 12:05:27,220 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-04 12:05:27,220 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-04 12:05:27,220 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-04 12:05:27,221 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-04 12:05:27,221 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-11-04 12:05:27,221 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-04 12:05:27,221 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-04 12:05:27,222 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-04 12:05:27,222 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-04 12:05:27,222 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-04 12:05:27,223 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-04 12:05:27,223 INFO L138 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2022-11-04 12:05:27,223 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-04 12:05:27,224 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-04 12:05:27,224 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-11-04 12:05:27,224 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-04 12:05:27,225 INFO L138 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2022-11-04 12:05:27,225 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2022-11-04 12:05:27,225 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_e5241b76-a4dd-4093-9360-7a569b3ee8e3/bin/ugemcutter-C1kR7RIaUi/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5241b76-a4dd-4093-9360-7a569b3ee8e3/bin/ugemcutter-C1kR7RIaUi Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> GemCutter Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 22ccde2ce516925ebfe813d783d47f1167b5115e5910734aa9e1bf526ce8c733 [2022-11-04 12:05:27,603 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-04 12:05:27,638 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-04 12:05:27,642 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-04 12:05:27,643 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-04 12:05:27,644 INFO L275 PluginConnector]: CDTParser initialized [2022-11-04 12:05:27,646 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5241b76-a4dd-4093-9360-7a569b3ee8e3/bin/ugemcutter-C1kR7RIaUi/../../sv-benchmarks/c/pthread-ext/47_ticket_lock_hc_backoff_vs.i [2022-11-04 12:05:27,720 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5241b76-a4dd-4093-9360-7a569b3ee8e3/bin/ugemcutter-C1kR7RIaUi/data/06bddcdab/2671db17202c48538ecb044ef75d13e9/FLAG6a61e05f8 [2022-11-04 12:05:28,266 INFO L306 CDTParser]: Found 1 translation units. [2022-11-04 12:05:28,267 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5241b76-a4dd-4093-9360-7a569b3ee8e3/sv-benchmarks/c/pthread-ext/47_ticket_lock_hc_backoff_vs.i [2022-11-04 12:05:28,288 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5241b76-a4dd-4093-9360-7a569b3ee8e3/bin/ugemcutter-C1kR7RIaUi/data/06bddcdab/2671db17202c48538ecb044ef75d13e9/FLAG6a61e05f8 [2022-11-04 12:05:28,579 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5241b76-a4dd-4093-9360-7a569b3ee8e3/bin/ugemcutter-C1kR7RIaUi/data/06bddcdab/2671db17202c48538ecb044ef75d13e9 [2022-11-04 12:05:28,582 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-04 12:05:28,586 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-04 12:05:28,590 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-04 12:05:28,591 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-04 12:05:28,594 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-04 12:05:28,594 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 12:05:28" (1/1) ... [2022-11-04 12:05:28,596 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2af93174 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 12:05:28, skipping insertion in model container [2022-11-04 12:05:28,596 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 12:05:28" (1/1) ... [2022-11-04 12:05:28,603 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-04 12:05:28,637 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-04 12:05:28,996 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_e5241b76-a4dd-4093-9360-7a569b3ee8e3/sv-benchmarks/c/pthread-ext/47_ticket_lock_hc_backoff_vs.i[30336,30349] [2022-11-04 12:05:29,007 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-04 12:05:29,021 INFO L203 MainTranslator]: Completed pre-run [2022-11-04 12:05:29,081 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_e5241b76-a4dd-4093-9360-7a569b3ee8e3/sv-benchmarks/c/pthread-ext/47_ticket_lock_hc_backoff_vs.i[30336,30349] [2022-11-04 12:05:29,088 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-04 12:05:29,128 INFO L208 MainTranslator]: Completed translation [2022-11-04 12:05:29,128 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 12:05:29 WrapperNode [2022-11-04 12:05:29,129 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-04 12:05:29,130 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-04 12:05:29,130 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-04 12:05:29,130 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-04 12:05:29,138 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 12:05:29" (1/1) ... [2022-11-04 12:05:29,153 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 12:05:29" (1/1) ... [2022-11-04 12:05:29,183 INFO L138 Inliner]: procedures = 169, calls = 18, calls flagged for inlining = 5, calls inlined = 7, statements flattened = 108 [2022-11-04 12:05:29,183 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-04 12:05:29,184 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-04 12:05:29,184 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-04 12:05:29,185 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-04 12:05:29,195 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 12:05:29" (1/1) ... [2022-11-04 12:05:29,195 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 12:05:29" (1/1) ... [2022-11-04 12:05:29,212 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 12:05:29" (1/1) ... [2022-11-04 12:05:29,214 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 12:05:29" (1/1) ... [2022-11-04 12:05:29,218 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 12:05:29" (1/1) ... [2022-11-04 12:05:29,228 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 12:05:29" (1/1) ... [2022-11-04 12:05:29,231 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 12:05:29" (1/1) ... [2022-11-04 12:05:29,241 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 12:05:29" (1/1) ... [2022-11-04 12:05:29,244 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-04 12:05:29,245 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-04 12:05:29,245 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-04 12:05:29,245 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-04 12:05:29,246 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 12:05:29" (1/1) ... [2022-11-04 12:05:29,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-04 12:05:29,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5241b76-a4dd-4093-9360-7a569b3ee8e3/bin/ugemcutter-C1kR7RIaUi/z3 [2022-11-04 12:05:29,282 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5241b76-a4dd-4093-9360-7a569b3ee8e3/bin/ugemcutter-C1kR7RIaUi/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-04 12:05:29,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5241b76-a4dd-4093-9360-7a569b3ee8e3/bin/ugemcutter-C1kR7RIaUi/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-04 12:05:29,326 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-04 12:05:29,326 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-11-04 12:05:29,328 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-11-04 12:05:29,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-04 12:05:29,328 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-04 12:05:29,328 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-04 12:05:29,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-04 12:05:29,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-04 12:05:29,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-04 12:05:29,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-04 12:05:29,331 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-04 12:05:29,461 INFO L235 CfgBuilder]: Building ICFG [2022-11-04 12:05:29,463 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-04 12:05:29,792 INFO L276 CfgBuilder]: Performing block encoding [2022-11-04 12:05:29,872 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-04 12:05:29,872 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-11-04 12:05:29,875 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 12:05:29 BoogieIcfgContainer [2022-11-04 12:05:29,875 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-04 12:05:29,878 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-04 12:05:29,878 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-04 12:05:29,884 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-04 12:05:29,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.11 12:05:28" (1/3) ... [2022-11-04 12:05:29,886 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62fde68c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 12:05:29, skipping insertion in model container [2022-11-04 12:05:29,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 12:05:29" (2/3) ... [2022-11-04 12:05:29,887 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62fde68c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 12:05:29, skipping insertion in model container [2022-11-04 12:05:29,887 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 12:05:29" (3/3) ... [2022-11-04 12:05:29,889 INFO L112 eAbstractionObserver]: Analyzing ICFG 47_ticket_lock_hc_backoff_vs.i [2022-11-04 12:05:29,899 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-04 12:05:29,912 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-04 12:05:29,913 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-04 12:05:29,913 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-04 12:05:29,999 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-04 12:05:30,068 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-04 12:05:30,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-11-04 12:05:30,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5241b76-a4dd-4093-9360-7a569b3ee8e3/bin/ugemcutter-C1kR7RIaUi/z3 [2022-11-04 12:05:30,075 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5241b76-a4dd-4093-9360-7a569b3ee8e3/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-11-04 12:05:30,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5241b76-a4dd-4093-9360-7a569b3ee8e3/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2022-11-04 12:05:30,110 INFO L156 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-11-04 12:05:30,126 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thr1Thread1of1ForFork0 ======== [2022-11-04 12:05:30,133 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=PARTIAL_ORDER_FA, 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;@472c0d99, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-04 12:05:30,134 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-04 12:05:30,309 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-04 12:05:30,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-04 12:05:30,315 INFO L85 PathProgramCache]: Analyzing trace with hash 801900849, now seen corresponding path program 1 times [2022-11-04 12:05:30,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-04 12:05:30,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958181083] [2022-11-04 12:05:30,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-04 12:05:30,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-04 12:05:30,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-04 12:05:30,563 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-04 12:05:30,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-04 12:05:30,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958181083] [2022-11-04 12:05:30,571 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958181083] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-04 12:05:30,571 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-04 12:05:30,571 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-04 12:05:30,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224216969] [2022-11-04 12:05:30,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-04 12:05:30,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-04 12:05:30,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-04 12:05:30,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-04 12:05:30,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-04 12:05:30,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:05:30,613 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-04 12:05:30,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 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) [2022-11-04 12:05:30,614 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:05:30,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:05:30,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-04 12:05:30,699 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-04 12:05:30,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-04 12:05:30,701 INFO L85 PathProgramCache]: Analyzing trace with hash 147102531, now seen corresponding path program 1 times [2022-11-04 12:05:30,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-04 12:05:30,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157417109] [2022-11-04 12:05:30,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-04 12:05:30,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-04 12:05:30,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-04 12:05:31,058 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-04 12:05:31,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-04 12:05:31,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157417109] [2022-11-04 12:05:31,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157417109] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-04 12:05:31,061 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-04 12:05:31,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-04 12:05:31,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827492177] [2022-11-04 12:05:31,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-04 12:05:31,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-04 12:05:31,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-04 12:05:31,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-04 12:05:31,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-04 12:05:31,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:05:31,068 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-04 12:05:31,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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) [2022-11-04 12:05:31,069 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:05:31,069 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:05:31,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:05:31,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-04 12:05:31,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-04 12:05:31,438 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-04 12:05:31,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-04 12:05:31,441 INFO L85 PathProgramCache]: Analyzing trace with hash 386025958, now seen corresponding path program 1 times [2022-11-04 12:05:31,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-04 12:05:31,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208451146] [2022-11-04 12:05:31,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-04 12:05:31,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-04 12:05:31,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-04 12:05:32,709 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 15 proven. 68 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-04 12:05:32,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-04 12:05:32,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208451146] [2022-11-04 12:05:32,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208451146] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-04 12:05:32,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1710210858] [2022-11-04 12:05:32,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-04 12:05:32,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-04 12:05:32,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5241b76-a4dd-4093-9360-7a569b3ee8e3/bin/ugemcutter-C1kR7RIaUi/z3 [2022-11-04 12:05:32,719 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5241b76-a4dd-4093-9360-7a569b3ee8e3/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-04 12:05:32,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5241b76-a4dd-4093-9360-7a569b3ee8e3/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-04 12:05:32,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-04 12:05:32,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 48 conjunts are in the unsatisfiable core [2022-11-04 12:05:33,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-04 12:05:34,131 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-04 12:05:34,210 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2022-11-04 12:05:34,271 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 15 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-04 12:05:34,271 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-04 12:05:35,266 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 15 proven. 56 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-04 12:05:35,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1710210858] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-04 12:05:35,266 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-04 12:05:35,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 20, 11] total 37 [2022-11-04 12:05:35,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190591108] [2022-11-04 12:05:35,267 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-04 12:05:35,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-11-04 12:05:35,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-04 12:05:35,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-11-04 12:05:35,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=1186, Unknown=0, NotChecked=0, Total=1332 [2022-11-04 12:05:35,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:05:35,271 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-04 12:05:35,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 7.081081081081081) internal successors, (262), 37 states have internal predecessors, (262), 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) [2022-11-04 12:05:35,272 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:05:35,272 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-04 12:05:35,272 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:05:37,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:05:37,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-04 12:05:37,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-04 12:05:37,067 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5241b76-a4dd-4093-9360-7a569b3ee8e3/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-04 12:05:37,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5241b76-a4dd-4093-9360-7a569b3ee8e3/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-04 12:05:37,247 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-04 12:05:37,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-04 12:05:37,248 INFO L85 PathProgramCache]: Analyzing trace with hash -281276461, now seen corresponding path program 1 times [2022-11-04 12:05:37,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-04 12:05:37,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711768693] [2022-11-04 12:05:37,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-04 12:05:37,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-04 12:05:37,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-04 12:05:37,709 INFO L134 CoverageAnalysis]: Checked inductivity of 1061 backedges. 166 proven. 0 refuted. 0 times theorem prover too weak. 895 trivial. 0 not checked. [2022-11-04 12:05:37,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-04 12:05:37,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711768693] [2022-11-04 12:05:37,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711768693] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-04 12:05:37,710 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-04 12:05:37,710 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-04 12:05:37,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234439683] [2022-11-04 12:05:37,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-04 12:05:37,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-04 12:05:37,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-04 12:05:37,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-04 12:05:37,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-04 12:05:37,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:05:37,715 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-04 12:05:37,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 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) [2022-11-04 12:05:37,716 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:05:37,716 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-04 12:05:37,716 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 44 states. [2022-11-04 12:05:37,717 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:05:37,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:05:37,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-04 12:05:37,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-04 12:05:37,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-04 12:05:37,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-04 12:05:37,782 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-04 12:05:37,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-04 12:05:37,783 INFO L85 PathProgramCache]: Analyzing trace with hash -1891846731, now seen corresponding path program 2 times [2022-11-04 12:05:37,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-04 12:05:37,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698938051] [2022-11-04 12:05:37,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-04 12:05:37,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-04 12:05:38,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-04 12:05:41,143 INFO L134 CoverageAnalysis]: Checked inductivity of 1061 backedges. 494 proven. 301 refuted. 0 times theorem prover too weak. 266 trivial. 0 not checked. [2022-11-04 12:05:41,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-04 12:05:41,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698938051] [2022-11-04 12:05:41,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698938051] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-04 12:05:41,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794210108] [2022-11-04 12:05:41,145 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-04 12:05:41,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-04 12:05:41,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5241b76-a4dd-4093-9360-7a569b3ee8e3/bin/ugemcutter-C1kR7RIaUi/z3 [2022-11-04 12:05:41,147 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5241b76-a4dd-4093-9360-7a569b3ee8e3/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-04 12:05:41,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5241b76-a4dd-4093-9360-7a569b3ee8e3/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-04 12:05:41,552 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-04 12:05:41,553 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-04 12:05:41,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 1034 conjuncts, 110 conjunts are in the unsatisfiable core [2022-11-04 12:05:41,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-04 12:05:44,189 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-04 12:05:44,463 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2022-11-04 12:05:44,702 INFO L134 CoverageAnalysis]: Checked inductivity of 1061 backedges. 273 proven. 782 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-04 12:05:44,702 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-04 12:05:47,754 INFO L134 CoverageAnalysis]: Checked inductivity of 1061 backedges. 273 proven. 497 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2022-11-04 12:05:47,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1794210108] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-04 12:05:47,755 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-04 12:05:47,755 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 51, 16] total 74 [2022-11-04 12:05:47,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799093240] [2022-11-04 12:05:47,755 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-04 12:05:47,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2022-11-04 12:05:47,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-04 12:05:47,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2022-11-04 12:05:47,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=331, Invalid=5071, Unknown=0, NotChecked=0, Total=5402 [2022-11-04 12:05:47,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:05:47,760 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-04 12:05:47,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 6.621621621621622) internal successors, (490), 74 states have internal predecessors, (490), 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) [2022-11-04 12:05:47,761 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:05:47,761 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-04 12:05:47,761 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 44 states. [2022-11-04 12:05:47,761 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-04 12:05:47,761 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:06:02,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:06:02,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-04 12:06:02,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-04 12:06:02,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-04 12:06:02,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2022-11-04 12:06:02,068 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5241b76-a4dd-4093-9360-7a569b3ee8e3/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-04 12:06:02,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5241b76-a4dd-4093-9360-7a569b3ee8e3/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-04 12:06:02,241 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-04 12:06:02,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-04 12:06:02,243 INFO L85 PathProgramCache]: Analyzing trace with hash -296691570, now seen corresponding path program 3 times [2022-11-04 12:06:02,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-04 12:06:02,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052547407] [2022-11-04 12:06:02,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-04 12:06:02,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-04 12:06:02,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-04 12:06:07,563 INFO L134 CoverageAnalysis]: Checked inductivity of 3338 backedges. 1737 proven. 521 refuted. 0 times theorem prover too weak. 1080 trivial. 0 not checked. [2022-11-04 12:06:07,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-04 12:06:07,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052547407] [2022-11-04 12:06:07,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052547407] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-04 12:06:07,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [166296444] [2022-11-04 12:06:07,565 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-04 12:06:07,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-04 12:06:07,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5241b76-a4dd-4093-9360-7a569b3ee8e3/bin/ugemcutter-C1kR7RIaUi/z3 [2022-11-04 12:06:07,569 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5241b76-a4dd-4093-9360-7a569b3ee8e3/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-04 12:06:07,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5241b76-a4dd-4093-9360-7a569b3ee8e3/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-04 12:06:08,079 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-04 12:06:08,080 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-04 12:06:08,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 467 conjuncts, 40 conjunts are in the unsatisfiable core [2022-11-04 12:06:08,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-04 12:06:08,133 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-04 12:06:08,229 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-11-04 12:06:08,386 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 15 [2022-11-04 12:06:08,451 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 16 [2022-11-04 12:06:08,502 INFO L134 CoverageAnalysis]: Checked inductivity of 3338 backedges. 871 proven. 21 refuted. 0 times theorem prover too weak. 2446 trivial. 0 not checked. [2022-11-04 12:06:08,503 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-04 12:06:08,837 INFO L134 CoverageAnalysis]: Checked inductivity of 3338 backedges. 858 proven. 21 refuted. 0 times theorem prover too weak. 2459 trivial. 0 not checked. [2022-11-04 12:06:08,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [166296444] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-04 12:06:08,838 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-04 12:06:08,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 10, 8] total 29 [2022-11-04 12:06:08,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835327935] [2022-11-04 12:06:08,839 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-04 12:06:08,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-04 12:06:08,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-04 12:06:08,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-04 12:06:08,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=735, Unknown=0, NotChecked=0, Total=812 [2022-11-04 12:06:08,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:06:08,842 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-04 12:06:08,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 10.172413793103448) internal successors, (295), 29 states have internal predecessors, (295), 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) [2022-11-04 12:06:08,843 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:06:08,843 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-04 12:06:08,843 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 44 states. [2022-11-04 12:06:08,844 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-04 12:06:08,844 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 128 states. [2022-11-04 12:06:08,844 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:07:00,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:07:00,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-04 12:07:00,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2022-11-04 12:07:00,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-04 12:07:00,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 462 states. [2022-11-04 12:07:00,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2022-11-04 12:07:00,536 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-04 12:07:00,564 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5241b76-a4dd-4093-9360-7a569b3ee8e3/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-04 12:07:00,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5241b76-a4dd-4093-9360-7a569b3ee8e3/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-04 12:07:00,749 INFO L444 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1] [2022-11-04 12:07:00,753 INFO L307 ceAbstractionStarter]: Result for error location thr1Thread1of1ForFork0 was SAFE (1/2) [2022-11-04 12:07:00,756 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-04 12:07:00,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-11-04 12:07:00,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5241b76-a4dd-4093-9360-7a569b3ee8e3/bin/ugemcutter-C1kR7RIaUi/z3 [2022-11-04 12:07:00,758 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5241b76-a4dd-4093-9360-7a569b3ee8e3/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-11-04 12:07:00,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5241b76-a4dd-4093-9360-7a569b3ee8e3/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (6)] Waiting until timeout for monitored process [2022-11-04 12:07:00,762 INFO L156 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-11-04 12:07:00,762 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2022-11-04 12:07:00,763 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=PARTIAL_ORDER_FA, 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;@472c0d99, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-04 12:07:00,763 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-04 12:07:00,767 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-04 12:07:00,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-04 12:07:00,768 INFO L85 PathProgramCache]: Analyzing trace with hash 253472294, now seen corresponding path program 1 times [2022-11-04 12:07:00,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-04 12:07:00,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842498491] [2022-11-04 12:07:00,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-04 12:07:00,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-04 12:07:00,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-04 12:07:00,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-04 12:07:00,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-04 12:07:00,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842498491] [2022-11-04 12:07:00,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842498491] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-04 12:07:00,810 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-04 12:07:00,810 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-04 12:07:00,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359922672] [2022-11-04 12:07:00,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-04 12:07:00,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-04 12:07:00,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-04 12:07:00,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-04 12:07:00,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-04 12:07:00,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:07:00,812 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-04 12:07:00,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 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) [2022-11-04 12:07:00,813 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:07:00,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:07:00,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-04 12:07:00,823 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-04 12:07:00,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-04 12:07:00,824 INFO L85 PathProgramCache]: Analyzing trace with hash 686024596, now seen corresponding path program 1 times [2022-11-04 12:07:00,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-04 12:07:00,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237535921] [2022-11-04 12:07:00,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-04 12:07:00,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-04 12:07:00,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-04 12:07:00,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-04 12:07:00,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-04 12:07:00,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237535921] [2022-11-04 12:07:00,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237535921] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-04 12:07:00,918 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-04 12:07:00,918 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-04 12:07:00,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996601350] [2022-11-04 12:07:00,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-04 12:07:00,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-04 12:07:00,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-04 12:07:00,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-04 12:07:00,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-04 12:07:00,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:07:00,926 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-04 12:07:00,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 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) [2022-11-04 12:07:00,926 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:07:00,926 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:07:01,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:07:01,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-04 12:07:01,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-04 12:07:01,167 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-04 12:07:01,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-04 12:07:01,167 INFO L85 PathProgramCache]: Analyzing trace with hash -367385274, now seen corresponding path program 1 times [2022-11-04 12:07:01,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-04 12:07:01,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146316143] [2022-11-04 12:07:01,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-04 12:07:01,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-04 12:07:01,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-04 12:07:01,380 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-11-04 12:07:01,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-04 12:07:01,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146316143] [2022-11-04 12:07:01,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146316143] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-04 12:07:01,381 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-04 12:07:01,381 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-04 12:07:01,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46968280] [2022-11-04 12:07:01,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-04 12:07:01,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-04 12:07:01,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-04 12:07:01,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-04 12:07:01,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-04 12:07:01,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:07:01,384 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-04 12:07:01,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 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) [2022-11-04 12:07:01,384 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:07:01,385 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-04 12:07:01,385 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:07:01,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:07:01,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-04 12:07:01,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-04 12:07:01,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-04 12:07:01,430 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-04 12:07:01,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-04 12:07:01,431 INFO L85 PathProgramCache]: Analyzing trace with hash -1313439504, now seen corresponding path program 2 times [2022-11-04 12:07:01,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-04 12:07:01,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006644086] [2022-11-04 12:07:01,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-04 12:07:01,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-04 12:07:01,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-04 12:07:02,233 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 51 proven. 68 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-04 12:07:02,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-04 12:07:02,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006644086] [2022-11-04 12:07:02,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006644086] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-04 12:07:02,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [797638738] [2022-11-04 12:07:02,234 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-04 12:07:02,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-04 12:07:02,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5241b76-a4dd-4093-9360-7a569b3ee8e3/bin/ugemcutter-C1kR7RIaUi/z3 [2022-11-04 12:07:02,236 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5241b76-a4dd-4093-9360-7a569b3ee8e3/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-04 12:07:02,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5241b76-a4dd-4093-9360-7a569b3ee8e3/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-04 12:07:02,415 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-04 12:07:02,416 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-04 12:07:02,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 446 conjuncts, 48 conjunts are in the unsatisfiable core [2022-11-04 12:07:02,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-04 12:07:03,152 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-04 12:07:03,200 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2022-11-04 12:07:03,241 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 51 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-04 12:07:03,241 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-04 12:07:04,199 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 51 proven. 56 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-04 12:07:04,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [797638738] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-04 12:07:04,199 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-04 12:07:04,199 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 20, 11] total 37 [2022-11-04 12:07:04,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249940368] [2022-11-04 12:07:04,200 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-04 12:07:04,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-11-04 12:07:04,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-04 12:07:04,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-11-04 12:07:04,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=1186, Unknown=0, NotChecked=0, Total=1332 [2022-11-04 12:07:04,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:07:04,203 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-04 12:07:04,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 7.486486486486487) internal successors, (277), 37 states have internal predecessors, (277), 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) [2022-11-04 12:07:04,204 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:07:04,204 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-04 12:07:04,204 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-04 12:07:04,204 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:07:05,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:07:05,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-04 12:07:05,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-04 12:07:05,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-04 12:07:05,787 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5241b76-a4dd-4093-9360-7a569b3ee8e3/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-04 12:07:05,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5241b76-a4dd-4093-9360-7a569b3ee8e3/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-04 12:07:05,956 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-04 12:07:05,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-04 12:07:05,957 INFO L85 PathProgramCache]: Analyzing trace with hash 815023793, now seen corresponding path program 1 times [2022-11-04 12:07:05,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-04 12:07:05,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675231986] [2022-11-04 12:07:05,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-04 12:07:05,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-04 12:07:06,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-04 12:07:08,080 INFO L134 CoverageAnalysis]: Checked inductivity of 938 backedges. 399 proven. 301 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2022-11-04 12:07:08,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-04 12:07:08,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675231986] [2022-11-04 12:07:08,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675231986] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-04 12:07:08,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [718664797] [2022-11-04 12:07:08,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-04 12:07:08,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-04 12:07:08,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5241b76-a4dd-4093-9360-7a569b3ee8e3/bin/ugemcutter-C1kR7RIaUi/z3 [2022-11-04 12:07:08,083 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5241b76-a4dd-4093-9360-7a569b3ee8e3/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-04 12:07:08,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5241b76-a4dd-4093-9360-7a569b3ee8e3/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-04 12:07:08,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-04 12:07:08,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 981 conjuncts, 110 conjunts are in the unsatisfiable core [2022-11-04 12:07:08,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-04 12:07:10,973 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-04 12:07:11,237 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2022-11-04 12:07:11,438 INFO L134 CoverageAnalysis]: Checked inductivity of 938 backedges. 156 proven. 782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-04 12:07:11,438 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-04 12:07:13,983 INFO L134 CoverageAnalysis]: Checked inductivity of 938 backedges. 156 proven. 497 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2022-11-04 12:07:13,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [718664797] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-04 12:07:13,983 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-04 12:07:13,983 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 51, 16] total 74 [2022-11-04 12:07:13,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190586280] [2022-11-04 12:07:13,984 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-04 12:07:13,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2022-11-04 12:07:13,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-04 12:07:13,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2022-11-04 12:07:13,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=331, Invalid=5071, Unknown=0, NotChecked=0, Total=5402 [2022-11-04 12:07:13,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:07:13,987 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-04 12:07:13,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 6.621621621621622) internal successors, (490), 74 states have internal predecessors, (490), 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) [2022-11-04 12:07:13,988 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:07:13,988 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-04 12:07:13,989 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-04 12:07:13,989 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 44 states. [2022-11-04 12:07:13,989 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:07:24,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:07:24,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-04 12:07:24,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-04 12:07:24,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-04 12:07:24,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2022-11-04 12:07:24,228 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5241b76-a4dd-4093-9360-7a569b3ee8e3/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-04 12:07:24,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5241b76-a4dd-4093-9360-7a569b3ee8e3/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-04 12:07:24,415 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-04 12:07:24,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-04 12:07:24,416 INFO L85 PathProgramCache]: Analyzing trace with hash -856429320, now seen corresponding path program 2 times [2022-11-04 12:07:24,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-04 12:07:24,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384478987] [2022-11-04 12:07:24,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-04 12:07:24,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-04 12:07:24,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-04 12:07:28,600 INFO L134 CoverageAnalysis]: Checked inductivity of 3119 backedges. 1611 proven. 521 refuted. 0 times theorem prover too weak. 987 trivial. 0 not checked. [2022-11-04 12:07:28,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-04 12:07:28,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384478987] [2022-11-04 12:07:28,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384478987] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-04 12:07:28,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1175730566] [2022-11-04 12:07:28,601 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-04 12:07:28,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-04 12:07:28,602 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5241b76-a4dd-4093-9360-7a569b3ee8e3/bin/ugemcutter-C1kR7RIaUi/z3 [2022-11-04 12:07:28,603 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5241b76-a4dd-4093-9360-7a569b3ee8e3/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-04 12:07:28,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5241b76-a4dd-4093-9360-7a569b3ee8e3/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-04 12:07:29,116 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-04 12:07:29,116 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-04 12:07:29,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 1670 conjuncts, 188 conjunts are in the unsatisfiable core [2022-11-04 12:07:29,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-04 12:07:34,527 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-04 12:07:34,616 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2022-11-04 12:07:34,691 INFO L134 CoverageAnalysis]: Checked inductivity of 3119 backedges. 123 proven. 2996 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-04 12:07:34,691 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-04 12:07:38,886 INFO L134 CoverageAnalysis]: Checked inductivity of 3119 backedges. 123 proven. 1881 refuted. 0 times theorem prover too weak. 1115 trivial. 0 not checked. [2022-11-04 12:07:38,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1175730566] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-04 12:07:38,887 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-04 12:07:38,887 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 90, 15] total 112 [2022-11-04 12:07:38,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695540940] [2022-11-04 12:07:38,887 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-04 12:07:38,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 112 states [2022-11-04 12:07:38,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-04 12:07:38,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2022-11-04 12:07:38,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=653, Invalid=11779, Unknown=0, NotChecked=0, Total=12432 [2022-11-04 12:07:38,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:07:38,894 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-04 12:07:38,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 112 states, 112 states have (on average 6.482142857142857) internal successors, (726), 112 states have internal predecessors, (726), 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) [2022-11-04 12:07:38,895 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:07:38,895 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-04 12:07:38,895 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-04 12:07:38,895 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 44 states. [2022-11-04 12:07:38,896 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 135 states. [2022-11-04 12:07:38,896 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:08:56,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:08:56,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-04 12:08:56,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-04 12:08:56,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2022-11-04 12:08:56,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 397 states. [2022-11-04 12:08:56,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 397 states. [2022-11-04 12:08:56,434 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5241b76-a4dd-4093-9360-7a569b3ee8e3/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-04 12:08:56,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5241b76-a4dd-4093-9360-7a569b3ee8e3/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-04 12:08:56,602 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-04 12:08:56,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-04 12:08:56,603 INFO L85 PathProgramCache]: Analyzing trace with hash -125705515, now seen corresponding path program 1 times [2022-11-04 12:08:56,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-04 12:08:56,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267786246] [2022-11-04 12:08:56,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-04 12:08:56,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-04 12:08:56,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-04 12:08:56,618 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-04 12:08:56,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-04 12:08:56,679 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-04 12:08:56,680 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-04 12:08:56,682 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2022-11-04 12:08:56,682 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-11-04 12:08:56,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-04 12:08:56,684 INFO L444 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1] [2022-11-04 12:08:56,686 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.start was UNSAFE,UNKNOWN (2/2) [2022-11-04 12:08:56,687 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-04 12:08:56,687 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-04 12:08:56,714 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-04 12:08:56,721 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-04 12:08:56,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-11-04 12:08:56,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5241b76-a4dd-4093-9360-7a569b3ee8e3/bin/ugemcutter-C1kR7RIaUi/z3 [2022-11-04 12:08:56,724 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5241b76-a4dd-4093-9360-7a569b3ee8e3/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-11-04 12:08:56,732 INFO L156 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-11-04 12:08:56,732 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2022-11-04 12:08:56,732 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=PARTIAL_ORDER_FA, 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;@472c0d99, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-04 12:08:56,733 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-04 12:08:56,735 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-04 12:08:56,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-04 12:08:56,735 INFO L85 PathProgramCache]: Analyzing trace with hash -557993436, now seen corresponding path program 1 times [2022-11-04 12:08:56,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-04 12:08:56,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203203673] [2022-11-04 12:08:56,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-04 12:08:56,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-04 12:08:56,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5241b76-a4dd-4093-9360-7a569b3ee8e3/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (10)] Waiting until timeout for monitored process [2022-11-04 12:08:56,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-04 12:08:56,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-04 12:08:56,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-04 12:08:56,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203203673] [2022-11-04 12:08:56,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203203673] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-04 12:08:56,766 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-04 12:08:56,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-04 12:08:56,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258662395] [2022-11-04 12:08:56,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-04 12:08:56,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-04 12:08:56,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-04 12:08:56,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-04 12:08:56,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-04 12:08:56,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:08:56,768 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-04 12:08:56,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 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) [2022-11-04 12:08:56,768 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:08:56,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:08:56,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-04 12:08:56,772 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-04 12:08:56,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-04 12:08:56,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1515883692, now seen corresponding path program 1 times [2022-11-04 12:08:56,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-04 12:08:56,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338183042] [2022-11-04 12:08:56,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-04 12:08:56,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-04 12:08:56,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-04 12:08:56,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-04 12:08:56,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-04 12:08:56,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338183042] [2022-11-04 12:08:56,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338183042] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-04 12:08:56,827 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-04 12:08:56,827 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-04 12:08:56,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041696762] [2022-11-04 12:08:56,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-04 12:08:56,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-04 12:08:56,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-04 12:08:56,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-04 12:08:56,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-04 12:08:56,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:08:56,829 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-04 12:08:56,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 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) [2022-11-04 12:08:56,829 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:08:56,829 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:08:57,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:08:57,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-04 12:08:57,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-04 12:08:57,083 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-04 12:08:57,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-04 12:08:57,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1385378042, now seen corresponding path program 1 times [2022-11-04 12:08:57,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-04 12:08:57,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965999689] [2022-11-04 12:08:57,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-04 12:08:57,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-04 12:08:57,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-04 12:08:57,180 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-11-04 12:08:57,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-04 12:08:57,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965999689] [2022-11-04 12:08:57,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965999689] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-04 12:08:57,181 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-04 12:08:57,181 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-04 12:08:57,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502796018] [2022-11-04 12:08:57,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-04 12:08:57,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-04 12:08:57,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-04 12:08:57,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-04 12:08:57,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-04 12:08:57,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:08:57,183 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-04 12:08:57,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 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) [2022-11-04 12:08:57,183 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:08:57,183 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-04 12:08:57,183 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:08:57,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:08:57,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-04 12:08:57,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-04 12:08:57,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-04 12:08:57,216 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-04 12:08:57,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-04 12:08:57,216 INFO L85 PathProgramCache]: Analyzing trace with hash -638515536, now seen corresponding path program 2 times [2022-11-04 12:08:57,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-04 12:08:57,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750766229] [2022-11-04 12:08:57,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-04 12:08:57,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-04 12:08:57,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-04 12:08:57,848 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 51 proven. 68 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-04 12:08:57,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-04 12:08:57,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750766229] [2022-11-04 12:08:57,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750766229] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-04 12:08:57,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [392330413] [2022-11-04 12:08:57,849 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-04 12:08:57,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-04 12:08:57,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5241b76-a4dd-4093-9360-7a569b3ee8e3/bin/ugemcutter-C1kR7RIaUi/z3 [2022-11-04 12:08:57,855 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5241b76-a4dd-4093-9360-7a569b3ee8e3/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-04 12:08:57,860 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5241b76-a4dd-4093-9360-7a569b3ee8e3/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-04 12:08:58,076 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-04 12:08:58,076 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-04 12:08:58,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 446 conjuncts, 54 conjunts are in the unsatisfiable core [2022-11-04 12:08:58,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-04 12:08:58,915 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-04 12:08:58,959 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2022-11-04 12:08:58,990 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 27 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-04 12:08:58,990 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-04 12:08:59,728 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 27 proven. 68 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-04 12:08:59,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [392330413] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-04 12:08:59,728 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-04 12:08:59,728 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 23, 11] total 40 [2022-11-04 12:08:59,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077314294] [2022-11-04 12:08:59,729 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-04 12:08:59,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-11-04 12:08:59,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-04 12:08:59,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-11-04 12:08:59,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=1401, Unknown=0, NotChecked=0, Total=1560 [2022-11-04 12:08:59,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:08:59,731 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-04 12:08:59,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 7.325) internal successors, (293), 40 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) [2022-11-04 12:08:59,731 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:08:59,731 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-04 12:08:59,731 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-04 12:08:59,731 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:09:01,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:09:01,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-04 12:09:01,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-04 12:09:01,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-11-04 12:09:01,213 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5241b76-a4dd-4093-9360-7a569b3ee8e3/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-04 12:09:01,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5241b76-a4dd-4093-9360-7a569b3ee8e3/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-04 12:09:01,391 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-04 12:09:01,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-04 12:09:01,391 INFO L85 PathProgramCache]: Analyzing trace with hash -787556015, now seen corresponding path program 1 times [2022-11-04 12:09:01,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-04 12:09:01,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189990110] [2022-11-04 12:09:01,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-04 12:09:01,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-04 12:09:01,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-04 12:09:03,412 INFO L134 CoverageAnalysis]: Checked inductivity of 938 backedges. 399 proven. 301 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2022-11-04 12:09:03,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-04 12:09:03,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189990110] [2022-11-04 12:09:03,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189990110] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-04 12:09:03,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [555183493] [2022-11-04 12:09:03,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-04 12:09:03,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-04 12:09:03,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5241b76-a4dd-4093-9360-7a569b3ee8e3/bin/ugemcutter-C1kR7RIaUi/z3 [2022-11-04 12:09:03,414 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5241b76-a4dd-4093-9360-7a569b3ee8e3/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-04 12:09:03,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5241b76-a4dd-4093-9360-7a569b3ee8e3/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-04 12:09:03,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-04 12:09:03,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 981 conjuncts, 90 conjunts are in the unsatisfiable core [2022-11-04 12:09:03,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-04 12:09:05,618 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-04 12:09:05,678 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2022-11-04 12:09:05,726 INFO L134 CoverageAnalysis]: Checked inductivity of 938 backedges. 399 proven. 489 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2022-11-04 12:09:05,726 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-04 12:09:07,114 INFO L134 CoverageAnalysis]: Checked inductivity of 938 backedges. 399 proven. 271 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2022-11-04 12:09:07,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [555183493] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-04 12:09:07,114 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-04 12:09:07,114 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 41, 12] total 60 [2022-11-04 12:09:07,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47281259] [2022-11-04 12:09:07,115 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-04 12:09:07,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2022-11-04 12:09:07,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-04 12:09:07,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2022-11-04 12:09:07,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=273, Invalid=3267, Unknown=0, NotChecked=0, Total=3540 [2022-11-04 12:09:07,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:09:07,117 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-04 12:09:07,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 6.95) internal successors, (417), 60 states have internal predecessors, (417), 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) [2022-11-04 12:09:07,117 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:09:07,117 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-04 12:09:07,117 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-04 12:09:07,117 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 45 states. [2022-11-04 12:09:07,117 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:09:12,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:09:12,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-04 12:09:12,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-04 12:09:12,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-11-04 12:09:12,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2022-11-04 12:09:12,560 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5241b76-a4dd-4093-9360-7a569b3ee8e3/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-04 12:09:12,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5241b76-a4dd-4093-9360-7a569b3ee8e3/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-04 12:09:12,739 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-04 12:09:12,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-04 12:09:12,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1185281030, now seen corresponding path program 1 times [2022-11-04 12:09:12,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-04 12:09:12,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991107699] [2022-11-04 12:09:12,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-04 12:09:12,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-04 12:09:12,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-04 12:09:15,758 INFO L134 CoverageAnalysis]: Checked inductivity of 2205 backedges. 1005 proven. 473 refuted. 0 times theorem prover too weak. 727 trivial. 0 not checked. [2022-11-04 12:09:15,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-04 12:09:15,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991107699] [2022-11-04 12:09:15,759 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991107699] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-04 12:09:15,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1093732867] [2022-11-04 12:09:15,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-04 12:09:15,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-04 12:09:15,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5241b76-a4dd-4093-9360-7a569b3ee8e3/bin/ugemcutter-C1kR7RIaUi/z3 [2022-11-04 12:09:15,763 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5241b76-a4dd-4093-9360-7a569b3ee8e3/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-04 12:09:15,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5241b76-a4dd-4093-9360-7a569b3ee8e3/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-04 12:09:16,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-04 12:09:16,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 1415 conjuncts, 47 conjunts are in the unsatisfiable core [2022-11-04 12:09:16,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-04 12:09:16,328 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-04 12:09:16,377 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-04 12:09:16,378 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-04 12:09:16,410 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-04 12:09:16,493 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 17 [2022-11-04 12:09:16,702 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-04 12:09:16,702 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-04 12:09:16,743 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-11-04 12:09:16,788 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2022-11-04 12:09:16,823 INFO L134 CoverageAnalysis]: Checked inductivity of 2205 backedges. 1257 proven. 138 refuted. 0 times theorem prover too weak. 810 trivial. 0 not checked. [2022-11-04 12:09:16,823 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-04 12:09:16,865 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1877 (Array Int Int))) (not (= (mod (select (select (store |c_#memory_int| |c_thr1Thread1of2ForFork0_~#l~0#1.base| v_ArrVal_1877) |c_ULTIMATE.start_thr1_~#l~0#1.base|) |c_ULTIMATE.start_thr1_~#l~0#1.offset|) 4294967296) (mod c_~s~0 4294967296)))) is different from false [2022-11-04 12:09:17,348 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1877 (Array Int Int)) (|v_thr1Thread1of2ForFork0_~#l~0#1.base_46| Int) (v_ArrVal_1876 Int) (aux_div_aux_mod_~s~0_21_32 Int)) (let ((.cse0 (+ (* 4294967296 aux_div_aux_mod_~s~0_21_32) (mod (select (select (store |c_#memory_int| |v_thr1Thread1of2ForFork0_~#l~0#1.base_46| v_ArrVal_1877) |c_ULTIMATE.start_thr1_~#l~0#1.base|) |c_ULTIMATE.start_thr1_~#l~0#1.offset|) 4294967296)))) (or (< .cse0 0) (<= 4294967296 .cse0) (= .cse0 (mod (select (select |c_#memory_int| |c_ULTIMATE.start_thr1_~#l~0#1.base|) |c_ULTIMATE.start_thr1_~#l~0#1.offset|) 4294967296)) (not (= (select (store |c_#valid| |c_thr1Thread1of2ForFork0_~#l~0#1.base| v_ArrVal_1876) |v_thr1Thread1of2ForFork0_~#l~0#1.base_46|) 0))))) is different from false [2022-11-04 12:09:17,677 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-04 12:09:17,677 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 85 treesize of output 61 [2022-11-04 12:09:17,690 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 134 treesize of output 106 [2022-11-04 12:09:17,701 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 43 [2022-11-04 12:09:17,911 INFO L134 CoverageAnalysis]: Checked inductivity of 2205 backedges. 1276 proven. 3 refuted. 0 times theorem prover too weak. 925 trivial. 1 not checked. [2022-11-04 12:09:17,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1093732867] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-04 12:09:17,912 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-04 12:09:17,912 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 11] total 34 [2022-11-04 12:09:17,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77997956] [2022-11-04 12:09:17,912 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-04 12:09:17,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-04 12:09:17,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-04 12:09:17,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-04 12:09:17,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=894, Unknown=11, NotChecked=122, Total=1122 [2022-11-04 12:09:17,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:09:17,915 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-04 12:09:17,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 8.941176470588236) internal successors, (304), 34 states have internal predecessors, (304), 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) [2022-11-04 12:09:17,915 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:09:17,916 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-04 12:09:17,916 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-04 12:09:17,916 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 45 states. [2022-11-04 12:09:17,916 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 112 states. [2022-11-04 12:09:17,916 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:09:18,943 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse1 (select (select |c_#memory_int| |c_ULTIMATE.start_thr1_~#l~0#1.base|) |c_ULTIMATE.start_thr1_~#l~0#1.offset|)) (.cse0 (+ c_~s~0 1)) (.cse3 (+ c_~s~0 2))) (and (<= .cse0 .cse1) (= (select |c_#valid| |c_thr1Thread1of2ForFork0_~#l~0#1.base|) 1) (= (select |c_#valid| |c_ULTIMATE.start_thr1_~#l~0#1.base|) 1) (= |c_ULTIMATE.start_thr1_~#l~0#1.offset| 0) (forall ((v_ArrVal_1877 (Array Int Int)) (|v_thr1Thread1of2ForFork0_~#l~0#1.base_46| Int) (v_ArrVal_1876 Int) (aux_div_aux_mod_~s~0_21_32 Int)) (let ((.cse2 (+ (* 4294967296 aux_div_aux_mod_~s~0_21_32) (mod (select (select (store |c_#memory_int| |v_thr1Thread1of2ForFork0_~#l~0#1.base_46| v_ArrVal_1877) |c_ULTIMATE.start_thr1_~#l~0#1.base|) |c_ULTIMATE.start_thr1_~#l~0#1.offset|) 4294967296)))) (or (< .cse2 0) (<= 4294967296 .cse2) (= .cse2 (mod .cse1 4294967296)) (not (= (select (store |c_#valid| |c_thr1Thread1of2ForFork0_~#l~0#1.base| v_ArrVal_1876) |v_thr1Thread1of2ForFork0_~#l~0#1.base_46|) 0))))) (<= c_~t~0 .cse3) (<= .cse1 .cse0) (not (= |c_thr1Thread1of2ForFork0_~#l~0#1.base| |c_ULTIMATE.start_thr1_~#l~0#1.base|)) (<= .cse3 c_~t~0))) is different from false [2022-11-04 12:09:18,949 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse1 (+ c_~s~0 2))) (and (= (select |c_#valid| |c_thr1Thread1of2ForFork0_~#l~0#1.base|) 1) (= (select |c_#valid| |c_ULTIMATE.start_thr1_~#l~0#1.base|) 1) (= |c_ULTIMATE.start_thr1_~#l~0#1.offset| 0) (forall ((v_ArrVal_1877 (Array Int Int)) (|v_thr1Thread1of2ForFork0_~#l~0#1.base_46| Int) (v_ArrVal_1876 Int) (aux_div_aux_mod_~s~0_21_32 Int)) (let ((.cse0 (+ (* 4294967296 aux_div_aux_mod_~s~0_21_32) (mod (select (select (store |c_#memory_int| |v_thr1Thread1of2ForFork0_~#l~0#1.base_46| v_ArrVal_1877) |c_ULTIMATE.start_thr1_~#l~0#1.base|) |c_ULTIMATE.start_thr1_~#l~0#1.offset|) 4294967296)))) (or (< .cse0 0) (<= 4294967296 .cse0) (= .cse0 (mod (select (select |c_#memory_int| |c_ULTIMATE.start_thr1_~#l~0#1.base|) |c_ULTIMATE.start_thr1_~#l~0#1.offset|) 4294967296)) (not (= (select (store |c_#valid| |c_thr1Thread1of2ForFork0_~#l~0#1.base| v_ArrVal_1876) |v_thr1Thread1of2ForFork0_~#l~0#1.base_46|) 0))))) (<= c_~t~0 .cse1) (not (= |c_thr1Thread1of2ForFork0_~#l~0#1.base| |c_ULTIMATE.start_thr1_~#l~0#1.base|)) (<= .cse1 c_~t~0))) is different from false [2022-11-04 12:09:18,956 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_thr1Thread1of2ForFork0_#t~post4#1| 2))) (and (= (select |c_#valid| |c_thr1Thread1of2ForFork0_~#l~0#1.base|) 1) (<= c_~t~0 .cse0) (= (select |c_#valid| |c_ULTIMATE.start_thr1_~#l~0#1.base|) 1) (= |c_ULTIMATE.start_thr1_~#l~0#1.offset| 0) (forall ((v_ArrVal_1877 (Array Int Int)) (|v_thr1Thread1of2ForFork0_~#l~0#1.base_46| Int) (v_ArrVal_1876 Int) (aux_div_aux_mod_~s~0_21_32 Int)) (let ((.cse1 (+ (* 4294967296 aux_div_aux_mod_~s~0_21_32) (mod (select (select (store |c_#memory_int| |v_thr1Thread1of2ForFork0_~#l~0#1.base_46| v_ArrVal_1877) |c_ULTIMATE.start_thr1_~#l~0#1.base|) |c_ULTIMATE.start_thr1_~#l~0#1.offset|) 4294967296)))) (or (< .cse1 0) (<= 4294967296 .cse1) (= .cse1 (mod (select (select |c_#memory_int| |c_ULTIMATE.start_thr1_~#l~0#1.base|) |c_ULTIMATE.start_thr1_~#l~0#1.offset|) 4294967296)) (not (= (select (store |c_#valid| |c_thr1Thread1of2ForFork0_~#l~0#1.base| v_ArrVal_1876) |v_thr1Thread1of2ForFork0_~#l~0#1.base_46|) 0))))) (<= .cse0 c_~t~0) (not (= |c_thr1Thread1of2ForFork0_~#l~0#1.base| |c_ULTIMATE.start_thr1_~#l~0#1.base|)))) is different from false [2022-11-04 12:09:18,961 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 (+ c_~s~0 1))) (and (<= .cse0 c_~t~0) (= (select |c_#valid| |c_thr1Thread1of2ForFork0_~#l~0#1.base|) 1) (= (select |c_#valid| |c_ULTIMATE.start_thr1_~#l~0#1.base|) 1) (= |c_ULTIMATE.start_thr1_~#l~0#1.offset| 0) (forall ((v_ArrVal_1877 (Array Int Int)) (|v_thr1Thread1of2ForFork0_~#l~0#1.base_46| Int) (v_ArrVal_1876 Int) (aux_div_aux_mod_~s~0_21_32 Int)) (let ((.cse1 (+ (* 4294967296 aux_div_aux_mod_~s~0_21_32) (mod (select (select (store |c_#memory_int| |v_thr1Thread1of2ForFork0_~#l~0#1.base_46| v_ArrVal_1877) |c_ULTIMATE.start_thr1_~#l~0#1.base|) |c_ULTIMATE.start_thr1_~#l~0#1.offset|) 4294967296)))) (or (< .cse1 0) (<= 4294967296 .cse1) (= .cse1 (mod (select (select |c_#memory_int| |c_ULTIMATE.start_thr1_~#l~0#1.base|) |c_ULTIMATE.start_thr1_~#l~0#1.offset|) 4294967296)) (not (= (select (store |c_#valid| |c_thr1Thread1of2ForFork0_~#l~0#1.base| v_ArrVal_1876) |v_thr1Thread1of2ForFork0_~#l~0#1.base_46|) 0))))) (not (= |c_thr1Thread1of2ForFork0_~#l~0#1.base| |c_ULTIMATE.start_thr1_~#l~0#1.base|)) (<= c_~t~0 .cse0))) is different from false [2022-11-04 12:09:20,311 WARN L833 $PredicateComparison]: unable to prove that (and (= (select |c_#valid| |c_thr1Thread1of2ForFork0_~#l~0#1.base|) 1) (= (select |c_#valid| |c_ULTIMATE.start_thr1_~#l~0#1.base|) 1) (= |c_ULTIMATE.start_thr1_~#l~0#1.offset| 0) (forall ((v_ArrVal_1877 (Array Int Int)) (|v_thr1Thread1of2ForFork0_~#l~0#1.base_46| Int) (v_ArrVal_1876 Int) (aux_div_aux_mod_~s~0_21_32 Int)) (let ((.cse0 (+ (* 4294967296 aux_div_aux_mod_~s~0_21_32) (mod (select (select (store |c_#memory_int| |v_thr1Thread1of2ForFork0_~#l~0#1.base_46| v_ArrVal_1877) |c_ULTIMATE.start_thr1_~#l~0#1.base|) |c_ULTIMATE.start_thr1_~#l~0#1.offset|) 4294967296)))) (or (< .cse0 0) (<= 4294967296 .cse0) (= .cse0 (mod (select (select |c_#memory_int| |c_ULTIMATE.start_thr1_~#l~0#1.base|) |c_ULTIMATE.start_thr1_~#l~0#1.offset|) 4294967296)) (not (= (select (store |c_#valid| |c_thr1Thread1of2ForFork0_~#l~0#1.base| v_ArrVal_1876) |v_thr1Thread1of2ForFork0_~#l~0#1.base_46|) 0))))) (not (= |c_thr1Thread1of2ForFork0_~#l~0#1.base| |c_ULTIMATE.start_thr1_~#l~0#1.base|))) is different from false [2022-11-04 12:09:20,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:09:20,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-04 12:09:20,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-04 12:09:20,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-11-04 12:09:20,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2022-11-04 12:09:20,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-11-04 12:09:20,698 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5241b76-a4dd-4093-9360-7a569b3ee8e3/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-04 12:09:20,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5241b76-a4dd-4093-9360-7a569b3ee8e3/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-04 12:09:20,855 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-04 12:09:20,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-04 12:09:20,855 INFO L85 PathProgramCache]: Analyzing trace with hash -807120686, now seen corresponding path program 2 times [2022-11-04 12:09:20,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-04 12:09:20,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931946126] [2022-11-04 12:09:20,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-04 12:09:20,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-04 12:09:21,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-04 12:09:24,769 INFO L134 CoverageAnalysis]: Checked inductivity of 4257 backedges. 2152 proven. 754 refuted. 0 times theorem prover too weak. 1351 trivial. 0 not checked. [2022-11-04 12:09:24,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-04 12:09:24,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931946126] [2022-11-04 12:09:24,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931946126] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-04 12:09:24,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1911120357] [2022-11-04 12:09:24,770 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-04 12:09:24,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-04 12:09:24,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5241b76-a4dd-4093-9360-7a569b3ee8e3/bin/ugemcutter-C1kR7RIaUi/z3 [2022-11-04 12:09:24,775 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5241b76-a4dd-4093-9360-7a569b3ee8e3/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-04 12:09:24,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5241b76-a4dd-4093-9360-7a569b3ee8e3/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-04 12:09:25,272 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-04 12:09:25,273 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-04 12:09:25,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 1869 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-04 12:09:25,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-04 12:09:25,351 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2022-11-04 12:09:25,377 INFO L134 CoverageAnalysis]: Checked inductivity of 4257 backedges. 565 proven. 1 refuted. 0 times theorem prover too weak. 3691 trivial. 0 not checked. [2022-11-04 12:09:25,377 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-04 12:09:25,601 INFO L134 CoverageAnalysis]: Checked inductivity of 4257 backedges. 565 proven. 1 refuted. 0 times theorem prover too weak. 3691 trivial. 0 not checked. [2022-11-04 12:09:25,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1911120357] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-04 12:09:25,601 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-04 12:09:25,602 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 5, 5] total 19 [2022-11-04 12:09:25,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060998277] [2022-11-04 12:09:25,602 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-04 12:09:25,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-04 12:09:25,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-04 12:09:25,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-04 12:09:25,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2022-11-04 12:09:25,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:09:25,605 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-04 12:09:25,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 11.894736842105264) internal successors, (226), 19 states have internal predecessors, (226), 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) [2022-11-04 12:09:25,605 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:09:25,605 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-04 12:09:25,605 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-04 12:09:25,606 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 45 states. [2022-11-04 12:09:25,606 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 117 states. [2022-11-04 12:09:25,606 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 68 states. [2022-11-04 12:09:25,606 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:09:27,363 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_thr1Thread1of2ForFork0_#t~post4#1| 2)) (.cse0 (+ c_~s~0 1))) (and (<= .cse0 c_~t~0) (= (select |c_#valid| |c_thr1Thread1of2ForFork0_~#l~0#1.base|) 1) (<= c_~t~0 .cse1) (= (select |c_#valid| |c_ULTIMATE.start_thr1_~#l~0#1.base|) 1) (= |c_ULTIMATE.start_thr1_~#l~0#1.offset| 0) (forall ((v_ArrVal_1877 (Array Int Int)) (|v_thr1Thread1of2ForFork0_~#l~0#1.base_46| Int) (v_ArrVal_1876 Int) (aux_div_aux_mod_~s~0_21_32 Int)) (let ((.cse2 (+ (* 4294967296 aux_div_aux_mod_~s~0_21_32) (mod (select (select (store |c_#memory_int| |v_thr1Thread1of2ForFork0_~#l~0#1.base_46| v_ArrVal_1877) |c_ULTIMATE.start_thr1_~#l~0#1.base|) |c_ULTIMATE.start_thr1_~#l~0#1.offset|) 4294967296)))) (or (< .cse2 0) (<= 4294967296 .cse2) (= .cse2 (mod (select (select |c_#memory_int| |c_ULTIMATE.start_thr1_~#l~0#1.base|) |c_ULTIMATE.start_thr1_~#l~0#1.offset|) 4294967296)) (not (= (select (store |c_#valid| |c_thr1Thread1of2ForFork0_~#l~0#1.base| v_ArrVal_1876) |v_thr1Thread1of2ForFork0_~#l~0#1.base_46|) 0))))) (<= .cse1 c_~t~0) (not (= |c_thr1Thread1of2ForFork0_~#l~0#1.base| |c_ULTIMATE.start_thr1_~#l~0#1.base|)) (<= c_~t~0 .cse0))) is different from false [2022-11-04 12:09:27,417 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse2 (+ |c_thr1Thread1of2ForFork0_#t~post4#1| 2)) (.cse1 (select (select |c_#memory_int| |c_ULTIMATE.start_thr1_~#l~0#1.base|) |c_ULTIMATE.start_thr1_~#l~0#1.offset|)) (.cse0 (+ c_~s~0 1)) (.cse4 (+ c_~s~0 2))) (and (<= .cse0 .cse1) (= (select |c_#valid| |c_thr1Thread1of2ForFork0_~#l~0#1.base|) 1) (<= c_~t~0 .cse2) (= (select |c_#valid| |c_ULTIMATE.start_thr1_~#l~0#1.base|) 1) (= |c_ULTIMATE.start_thr1_~#l~0#1.offset| 0) (forall ((v_ArrVal_1877 (Array Int Int)) (|v_thr1Thread1of2ForFork0_~#l~0#1.base_46| Int) (v_ArrVal_1876 Int) (aux_div_aux_mod_~s~0_21_32 Int)) (let ((.cse3 (+ (* 4294967296 aux_div_aux_mod_~s~0_21_32) (mod (select (select (store |c_#memory_int| |v_thr1Thread1of2ForFork0_~#l~0#1.base_46| v_ArrVal_1877) |c_ULTIMATE.start_thr1_~#l~0#1.base|) |c_ULTIMATE.start_thr1_~#l~0#1.offset|) 4294967296)))) (or (< .cse3 0) (<= 4294967296 .cse3) (= .cse3 (mod .cse1 4294967296)) (not (= (select (store |c_#valid| |c_thr1Thread1of2ForFork0_~#l~0#1.base| v_ArrVal_1876) |v_thr1Thread1of2ForFork0_~#l~0#1.base_46|) 0))))) (<= .cse2 c_~t~0) (<= c_~t~0 .cse4) (<= .cse1 .cse0) (not (= |c_thr1Thread1of2ForFork0_~#l~0#1.base| |c_ULTIMATE.start_thr1_~#l~0#1.base|)) (<= .cse4 c_~t~0))) is different from false [2022-11-04 12:09:45,763 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse1 (select (select |c_#memory_int| |c_ULTIMATE.start_thr1_~#l~0#1.base|) |c_ULTIMATE.start_thr1_~#l~0#1.offset|))) (let ((.cse2 (+ |c_thr1Thread1of2ForFork0_#t~post4#1| 2)) (.cse4 (mod .cse1 4294967296)) (.cse0 (+ c_~s~0 1)) (.cse5 (+ c_~s~0 2))) (and (<= .cse0 .cse1) (= (select |c_#valid| |c_thr1Thread1of2ForFork0_~#l~0#1.base|) 1) (<= c_~t~0 .cse2) (= (select |c_#valid| |c_ULTIMATE.start_thr1_~#l~0#1.base|) 1) (= |c_ULTIMATE.start_thr1_~#l~0#1.offset| 0) (forall ((v_ArrVal_1877 (Array Int Int)) (|v_thr1Thread1of2ForFork0_~#l~0#1.base_46| Int) (v_ArrVal_1876 Int) (aux_div_aux_mod_~s~0_21_32 Int)) (let ((.cse3 (+ (* 4294967296 aux_div_aux_mod_~s~0_21_32) (mod (select (select (store |c_#memory_int| |v_thr1Thread1of2ForFork0_~#l~0#1.base_46| v_ArrVal_1877) |c_ULTIMATE.start_thr1_~#l~0#1.base|) |c_ULTIMATE.start_thr1_~#l~0#1.offset|) 4294967296)))) (or (< .cse3 0) (<= 4294967296 .cse3) (= .cse3 .cse4) (not (= (select (store |c_#valid| |c_thr1Thread1of2ForFork0_~#l~0#1.base| v_ArrVal_1876) |v_thr1Thread1of2ForFork0_~#l~0#1.base_46|) 0))))) (<= .cse2 c_~t~0) (= c_~s~0 0) (<= c_~t~0 .cse5) (not (= .cse4 (mod c_~s~0 4294967296))) (<= .cse1 .cse0) (not (= |c_thr1Thread1of2ForFork0_~#l~0#1.base| |c_ULTIMATE.start_thr1_~#l~0#1.base|)) (<= .cse5 c_~t~0)))) is different from false [2022-11-04 12:09:46,335 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse1 (select (select |c_#memory_int| |c_ULTIMATE.start_thr1_~#l~0#1.base|) |c_ULTIMATE.start_thr1_~#l~0#1.offset|))) (let ((.cse3 (mod .cse1 4294967296)) (.cse0 (+ c_~s~0 1)) (.cse4 (+ c_~s~0 2))) (and (<= .cse0 .cse1) (= (select |c_#valid| |c_thr1Thread1of2ForFork0_~#l~0#1.base|) 1) (= (select |c_#valid| |c_ULTIMATE.start_thr1_~#l~0#1.base|) 1) (= |c_ULTIMATE.start_thr1_~#l~0#1.offset| 0) (forall ((v_ArrVal_1877 (Array Int Int)) (|v_thr1Thread1of2ForFork0_~#l~0#1.base_46| Int) (v_ArrVal_1876 Int) (aux_div_aux_mod_~s~0_21_32 Int)) (let ((.cse2 (+ (* 4294967296 aux_div_aux_mod_~s~0_21_32) (mod (select (select (store |c_#memory_int| |v_thr1Thread1of2ForFork0_~#l~0#1.base_46| v_ArrVal_1877) |c_ULTIMATE.start_thr1_~#l~0#1.base|) |c_ULTIMATE.start_thr1_~#l~0#1.offset|) 4294967296)))) (or (< .cse2 0) (<= 4294967296 .cse2) (= .cse2 .cse3) (not (= (select (store |c_#valid| |c_thr1Thread1of2ForFork0_~#l~0#1.base| v_ArrVal_1876) |v_thr1Thread1of2ForFork0_~#l~0#1.base_46|) 0))))) (= c_~s~0 0) (<= c_~t~0 .cse4) (not (= .cse3 (mod c_~s~0 4294967296))) (<= .cse1 .cse0) (not (= |c_thr1Thread1of2ForFork0_~#l~0#1.base| |c_ULTIMATE.start_thr1_~#l~0#1.base|)) (<= .cse4 c_~t~0)))) is different from false [2022-11-04 12:09:47,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:09:47,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-04 12:09:47,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-04 12:09:47,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2022-11-04 12:09:47,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 273 states. [2022-11-04 12:09:47,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2022-11-04 12:09:47,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-11-04 12:09:47,777 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5241b76-a4dd-4093-9360-7a569b3ee8e3/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-04 12:09:47,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5241b76-a4dd-4093-9360-7a569b3ee8e3/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-04 12:09:47,945 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-04 12:09:47,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-04 12:09:47,945 INFO L85 PathProgramCache]: Analyzing trace with hash -568130717, now seen corresponding path program 1 times [2022-11-04 12:09:47,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-04 12:09:47,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846826304] [2022-11-04 12:09:47,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-04 12:09:47,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-04 12:09:48,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-04 12:09:49,110 INFO L134 CoverageAnalysis]: Checked inductivity of 686 backedges. 343 proven. 68 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2022-11-04 12:09:49,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-04 12:09:49,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846826304] [2022-11-04 12:09:49,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846826304] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-04 12:09:49,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1787997302] [2022-11-04 12:09:49,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-04 12:09:49,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-04 12:09:49,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5241b76-a4dd-4093-9360-7a569b3ee8e3/bin/ugemcutter-C1kR7RIaUi/z3 [2022-11-04 12:09:49,119 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5241b76-a4dd-4093-9360-7a569b3ee8e3/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-04 12:09:49,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5241b76-a4dd-4093-9360-7a569b3ee8e3/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-04 12:09:49,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-04 12:09:49,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 968 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-04 12:09:49,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-04 12:09:49,501 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-04 12:09:49,533 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-04 12:09:49,548 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-04 12:09:49,548 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-04 12:09:49,608 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-04 12:09:49,711 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2022-11-04 12:09:49,739 INFO L134 CoverageAnalysis]: Checked inductivity of 686 backedges. 166 proven. 3 refuted. 0 times theorem prover too weak. 517 trivial. 0 not checked. [2022-11-04 12:09:49,739 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-04 12:09:49,907 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse1 (mod |c_ULTIMATE.start_thr1_#t~mem3#1| 4294967296))) (and (forall ((v_ArrVal_2387 (Array Int Int))) (< (let ((.cse0 (mod (select (select (store |c_#memory_int| |c_thr1Thread1of2ForFork0_~#l~0#1.base| v_ArrVal_2387) |c_ULTIMATE.start_thr1_~#l~0#1.base|) |c_ULTIMATE.start_thr1_~#l~0#1.offset|) 4294967296))) (+ (* (div (+ 4294967295 (- .cse0)) 4294967296) 4294967296) .cse0)) (+ .cse1 1))) (forall ((v_ArrVal_2387 (Array Int Int))) (< .cse1 (let ((.cse2 (mod (select (select (store |c_#memory_int| |c_thr1Thread1of2ForFork0_~#l~0#1.base| v_ArrVal_2387) |c_ULTIMATE.start_thr1_~#l~0#1.base|) |c_ULTIMATE.start_thr1_~#l~0#1.offset|) 4294967296))) (+ (* (div (+ (- 1) (- .cse2)) 4294967296) 4294967296) 4294967297 .cse2)))))) is different from false [2022-11-04 12:09:49,927 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 (mod (select (select |c_#memory_int| |c_ULTIMATE.start_thr1_~#l~0#1.base|) |c_ULTIMATE.start_thr1_~#l~0#1.offset|) 4294967296))) (and (forall ((v_ArrVal_2387 (Array Int Int))) (< .cse0 (let ((.cse1 (mod (select (select (store |c_#memory_int| |c_thr1Thread1of2ForFork0_~#l~0#1.base| v_ArrVal_2387) |c_ULTIMATE.start_thr1_~#l~0#1.base|) |c_ULTIMATE.start_thr1_~#l~0#1.offset|) 4294967296))) (+ (* (div (+ (- 1) (- .cse1)) 4294967296) 4294967296) 4294967297 .cse1)))) (forall ((v_ArrVal_2387 (Array Int Int))) (< (let ((.cse2 (mod (select (select (store |c_#memory_int| |c_thr1Thread1of2ForFork0_~#l~0#1.base| v_ArrVal_2387) |c_ULTIMATE.start_thr1_~#l~0#1.base|) |c_ULTIMATE.start_thr1_~#l~0#1.offset|) 4294967296))) (+ (* (div (+ 4294967295 (- .cse2)) 4294967296) 4294967296) .cse2)) (+ .cse0 1))))) is different from false [2022-11-04 12:09:50,187 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-04 12:09:50,188 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 45 [2022-11-04 12:09:50,198 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 68 [2022-11-04 12:09:50,208 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2022-11-04 12:09:50,254 INFO L356 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-04 12:09:50,255 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 1 [2022-11-04 12:09:50,302 INFO L134 CoverageAnalysis]: Checked inductivity of 686 backedges. 166 proven. 1 refuted. 0 times theorem prover too weak. 517 trivial. 2 not checked. [2022-11-04 12:09:50,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1787997302] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-04 12:09:50,303 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-04 12:09:50,303 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 8, 9] total 27 [2022-11-04 12:09:50,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564685243] [2022-11-04 12:09:50,304 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-04 12:09:50,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-04 12:09:50,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-04 12:09:50,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-04 12:09:50,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=540, Unknown=3, NotChecked=94, Total=702 [2022-11-04 12:09:50,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:09:50,306 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-04 12:09:50,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 10.592592592592593) internal successors, (286), 27 states have internal predecessors, (286), 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) [2022-11-04 12:09:50,307 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:09:50,307 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-04 12:09:50,307 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-04 12:09:50,307 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 133 states. [2022-11-04 12:09:50,308 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 273 states. [2022-11-04 12:09:50,308 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 94 states. [2022-11-04 12:09:50,308 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 50 states. [2022-11-04 12:09:50,308 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:09:57,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:09:57,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-04 12:09:57,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-04 12:09:57,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2022-11-04 12:09:57,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 273 states. [2022-11-04 12:09:57,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2022-11-04 12:09:57,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-11-04 12:09:57,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-11-04 12:09:57,379 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5241b76-a4dd-4093-9360-7a569b3ee8e3/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-04 12:09:57,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5241b76-a4dd-4093-9360-7a569b3ee8e3/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-11-04 12:09:57,563 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-04 12:09:57,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-04 12:09:57,564 INFO L85 PathProgramCache]: Analyzing trace with hash 771308462, now seen corresponding path program 2 times [2022-11-04 12:09:57,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-04 12:09:57,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145771402] [2022-11-04 12:09:57,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-04 12:09:57,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-04 12:09:57,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-04 12:09:59,386 INFO L134 CoverageAnalysis]: Checked inductivity of 1175 backedges. 536 proven. 137 refuted. 0 times theorem prover too weak. 502 trivial. 0 not checked. [2022-11-04 12:09:59,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-04 12:09:59,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145771402] [2022-11-04 12:09:59,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145771402] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-04 12:09:59,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1647171276] [2022-11-04 12:09:59,387 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-04 12:09:59,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-04 12:09:59,387 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5241b76-a4dd-4093-9360-7a569b3ee8e3/bin/ugemcutter-C1kR7RIaUi/z3 [2022-11-04 12:09:59,394 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5241b76-a4dd-4093-9360-7a569b3ee8e3/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-04 12:09:59,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5241b76-a4dd-4093-9360-7a569b3ee8e3/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-04 12:09:59,853 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-04 12:09:59,853 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-04 12:09:59,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 1324 conjuncts, 88 conjunts are in the unsatisfiable core [2022-11-04 12:09:59,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-04 12:09:59,877 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-04 12:09:59,933 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-04 12:09:59,934 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-04 12:10:00,020 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 17 [2022-11-04 12:10:00,061 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-04 12:10:00,061 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-04 12:10:00,152 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 17 [2022-11-04 12:10:00,200 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-04 12:10:00,200 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-04 12:10:00,302 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 17 [2022-11-04 12:10:00,324 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-04 12:10:00,324 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-11-04 12:10:00,421 INFO L356 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-11-04 12:10:00,421 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 22 treesize of output 33 [2022-11-04 12:10:00,490 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-04 12:10:00,632 INFO L356 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-04 12:10:00,633 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 29 [2022-11-04 12:10:00,689 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-04 12:10:00,839 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-04 12:10:00,839 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-04 12:10:00,901 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-11-04 12:10:01,015 INFO L356 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-11-04 12:10:01,016 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2022-11-04 12:10:01,078 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-11-04 12:10:01,136 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2022-11-04 12:10:01,183 INFO L134 CoverageAnalysis]: Checked inductivity of 1175 backedges. 557 proven. 30 refuted. 0 times theorem prover too weak. 588 trivial. 0 not checked. [2022-11-04 12:10:01,183 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-04 12:10:01,249 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2643 (Array Int Int))) (not (= (mod (select (select (store |c_#memory_int| |c_thr1Thread2of2ForFork0_~#l~0#1.base| v_ArrVal_2643) |c_ULTIMATE.start_thr1_~#l~0#1.base|) |c_ULTIMATE.start_thr1_~#l~0#1.offset|) 4294967296) (mod c_~s~0 4294967296)))) is different from false [2022-11-04 12:10:01,909 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_thr1Thread2of2ForFork0_~#l~0#1.base_26| Int) (v_ArrVal_2643 (Array Int Int)) (v_ArrVal_2642 (Array Int Int)) (v_ArrVal_2640 Int) (|v_thr1Thread1of2ForFork0_~#l~0#1.base_56| Int) (aux_div_aux_mod_~s~0_21_32 Int)) (let ((.cse1 (store |c_#valid| |c_thr1Thread2of2ForFork0_~#l~0#1.base| v_ArrVal_2640)) (.cse0 (+ (* 4294967296 aux_div_aux_mod_~s~0_21_32) (mod (select (select (store (store |c_#memory_int| |v_thr1Thread1of2ForFork0_~#l~0#1.base_56| v_ArrVal_2642) |v_thr1Thread2of2ForFork0_~#l~0#1.base_26| v_ArrVal_2643) |c_ULTIMATE.start_thr1_~#l~0#1.base|) |c_ULTIMATE.start_thr1_~#l~0#1.offset|) 4294967296)))) (or (<= 4294967296 .cse0) (not (= (select .cse1 |v_thr1Thread1of2ForFork0_~#l~0#1.base_56|) 0)) (not (= (select (store .cse1 |v_thr1Thread1of2ForFork0_~#l~0#1.base_56| 1) |v_thr1Thread2of2ForFork0_~#l~0#1.base_26|) 0)) (< .cse0 0) (= .cse0 (mod (select (select |c_#memory_int| |c_ULTIMATE.start_thr1_~#l~0#1.base|) |c_ULTIMATE.start_thr1_~#l~0#1.offset|) 4294967296))))) is different from false [2022-11-04 12:10:02,053 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2639 Int) (|v_thr1Thread2of2ForFork0_~#l~0#1.base_26| Int) (v_ArrVal_2643 (Array Int Int)) (v_ArrVal_2642 (Array Int Int)) (v_ArrVal_2640 Int) (|v_thr1Thread1of2ForFork0_~#l~0#1.base_56| Int) (aux_div_aux_mod_~s~0_21_32 Int)) (let ((.cse1 (store (store |c_#valid| |c_thr1Thread1of2ForFork0_~#l~0#1.base| v_ArrVal_2639) |c_thr1Thread2of2ForFork0_~#l~0#1.base| v_ArrVal_2640)) (.cse0 (+ (* 4294967296 aux_div_aux_mod_~s~0_21_32) (mod (select (select (store (store |c_#memory_int| |v_thr1Thread1of2ForFork0_~#l~0#1.base_56| v_ArrVal_2642) |v_thr1Thread2of2ForFork0_~#l~0#1.base_26| v_ArrVal_2643) |c_ULTIMATE.start_thr1_~#l~0#1.base|) |c_ULTIMATE.start_thr1_~#l~0#1.offset|) 4294967296)))) (or (<= 4294967296 .cse0) (not (= (select .cse1 |v_thr1Thread1of2ForFork0_~#l~0#1.base_56|) 0)) (not (= (select (store .cse1 |v_thr1Thread1of2ForFork0_~#l~0#1.base_56| 1) |v_thr1Thread2of2ForFork0_~#l~0#1.base_26|) 0)) (< .cse0 0) (= .cse0 (mod (select (select |c_#memory_int| |c_ULTIMATE.start_thr1_~#l~0#1.base|) |c_ULTIMATE.start_thr1_~#l~0#1.offset|) 4294967296))))) is different from false [2022-11-04 12:10:02,534 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-04 12:10:02,535 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 94 treesize of output 70 [2022-11-04 12:10:02,549 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 274 treesize of output 238 [2022-11-04 12:10:02,568 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 115 treesize of output 109 [2022-11-04 12:10:02,580 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 220 treesize of output 208 [2022-11-04 12:10:05,813 INFO L134 CoverageAnalysis]: Checked inductivity of 1175 backedges. 540 proven. 28 refuted. 2 times theorem prover too weak. 588 trivial. 17 not checked. [2022-11-04 12:10:05,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1647171276] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-04 12:10:05,814 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-04 12:10:05,814 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 20] total 54 [2022-11-04 12:10:05,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515975837] [2022-11-04 12:10:05,814 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-04 12:10:05,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-11-04 12:10:05,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-04 12:10:05,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-11-04 12:10:05,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=2325, Unknown=31, NotChecked=300, Total=2862 [2022-11-04 12:10:05,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:10:05,817 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-04 12:10:05,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 8.092592592592593) internal successors, (437), 54 states have internal predecessors, (437), 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) [2022-11-04 12:10:05,818 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:10:05,818 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-04 12:10:05,818 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-04 12:10:05,818 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 133 states. [2022-11-04 12:10:05,818 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 273 states. [2022-11-04 12:10:05,818 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 94 states. [2022-11-04 12:10:05,818 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 50 states. [2022-11-04 12:10:05,819 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 90 states. [2022-11-04 12:10:05,819 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:10:15,053 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse2 (mod (select (select |c_#memory_int| |c_ULTIMATE.start_thr1_~#l~0#1.base|) |c_ULTIMATE.start_thr1_~#l~0#1.offset|) 4294967296)) (.cse0 (+ 3 |c_thr1Thread2of2ForFork0_#t~post4#1|)) (.cse1 (+ c_~s~0 3))) (and (<= .cse0 c_~t~0) (= (select |c_#valid| |c_thr1Thread1of2ForFork0_~#l~0#1.base|) 1) (= (select |c_#valid| |c_ULTIMATE.start_thr1_~#l~0#1.base|) 1) (= |c_ULTIMATE.start_thr1_~#l~0#1.offset| 0) (= (select |c_#valid| |c_thr1Thread2of2ForFork0_~#l~0#1.base|) 1) (not (= |c_ULTIMATE.start_thr1_~#l~0#1.base| |c_thr1Thread2of2ForFork0_~#l~0#1.base|)) (<= .cse1 c_~t~0) (not (= .cse2 (mod c_~s~0 4294967296))) (not (= |c_thr1Thread1of2ForFork0_~#l~0#1.base| |c_ULTIMATE.start_thr1_~#l~0#1.base|)) (forall ((v_ArrVal_2639 Int) (|v_thr1Thread2of2ForFork0_~#l~0#1.base_26| Int) (v_ArrVal_2643 (Array Int Int)) (v_ArrVal_2642 (Array Int Int)) (v_ArrVal_2640 Int) (|v_thr1Thread1of2ForFork0_~#l~0#1.base_56| Int) (aux_div_aux_mod_~s~0_21_32 Int)) (let ((.cse4 (store (store |c_#valid| |c_thr1Thread1of2ForFork0_~#l~0#1.base| v_ArrVal_2639) |c_thr1Thread2of2ForFork0_~#l~0#1.base| v_ArrVal_2640)) (.cse3 (+ (* 4294967296 aux_div_aux_mod_~s~0_21_32) (mod (select (select (store (store |c_#memory_int| |v_thr1Thread1of2ForFork0_~#l~0#1.base_56| v_ArrVal_2642) |v_thr1Thread2of2ForFork0_~#l~0#1.base_26| v_ArrVal_2643) |c_ULTIMATE.start_thr1_~#l~0#1.base|) |c_ULTIMATE.start_thr1_~#l~0#1.offset|) 4294967296)))) (or (<= 4294967296 .cse3) (not (= (select .cse4 |v_thr1Thread1of2ForFork0_~#l~0#1.base_56|) 0)) (not (= (select (store .cse4 |v_thr1Thread1of2ForFork0_~#l~0#1.base_56| 1) |v_thr1Thread2of2ForFork0_~#l~0#1.base_26|) 0)) (< .cse3 0) (= .cse3 .cse2)))) (<= c_~t~0 .cse0) (<= c_~t~0 .cse1))) is different from false [2022-11-04 12:10:15,062 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 (+ 3 |c_thr1Thread2of2ForFork0_#t~post4#1|))) (and (<= .cse0 c_~t~0) (= (select |c_#valid| |c_thr1Thread1of2ForFork0_~#l~0#1.base|) 1) (= (select |c_#valid| |c_ULTIMATE.start_thr1_~#l~0#1.base|) 1) (= |c_ULTIMATE.start_thr1_~#l~0#1.offset| 0) (= (select |c_#valid| |c_thr1Thread2of2ForFork0_~#l~0#1.base|) 1) (not (= |c_ULTIMATE.start_thr1_~#l~0#1.base| |c_thr1Thread2of2ForFork0_~#l~0#1.base|)) (not (= |c_thr1Thread1of2ForFork0_~#l~0#1.base| |c_ULTIMATE.start_thr1_~#l~0#1.base|)) (forall ((v_ArrVal_2639 Int) (|v_thr1Thread2of2ForFork0_~#l~0#1.base_26| Int) (v_ArrVal_2643 (Array Int Int)) (v_ArrVal_2642 (Array Int Int)) (v_ArrVal_2640 Int) (|v_thr1Thread1of2ForFork0_~#l~0#1.base_56| Int) (aux_div_aux_mod_~s~0_21_32 Int)) (let ((.cse2 (store (store |c_#valid| |c_thr1Thread1of2ForFork0_~#l~0#1.base| v_ArrVal_2639) |c_thr1Thread2of2ForFork0_~#l~0#1.base| v_ArrVal_2640)) (.cse1 (+ (* 4294967296 aux_div_aux_mod_~s~0_21_32) (mod (select (select (store (store |c_#memory_int| |v_thr1Thread1of2ForFork0_~#l~0#1.base_56| v_ArrVal_2642) |v_thr1Thread2of2ForFork0_~#l~0#1.base_26| v_ArrVal_2643) |c_ULTIMATE.start_thr1_~#l~0#1.base|) |c_ULTIMATE.start_thr1_~#l~0#1.offset|) 4294967296)))) (or (<= 4294967296 .cse1) (not (= (select .cse2 |v_thr1Thread1of2ForFork0_~#l~0#1.base_56|) 0)) (not (= (select (store .cse2 |v_thr1Thread1of2ForFork0_~#l~0#1.base_56| 1) |v_thr1Thread2of2ForFork0_~#l~0#1.base_26|) 0)) (< .cse1 0) (= .cse1 (mod (select (select |c_#memory_int| |c_ULTIMATE.start_thr1_~#l~0#1.base|) |c_ULTIMATE.start_thr1_~#l~0#1.offset|) 4294967296))))) (<= c_~t~0 .cse0))) is different from false [2022-11-04 12:10:16,554 WARN L833 $PredicateComparison]: unable to prove that (and (= (select |c_#valid| |c_thr1Thread1of2ForFork0_~#l~0#1.base|) 1) (= (select |c_#valid| |c_ULTIMATE.start_thr1_~#l~0#1.base|) 1) (= |c_ULTIMATE.start_thr1_~#l~0#1.offset| 0) (= (select |c_#valid| |c_thr1Thread2of2ForFork0_~#l~0#1.base|) 1) (not (= |c_ULTIMATE.start_thr1_~#l~0#1.base| |c_thr1Thread2of2ForFork0_~#l~0#1.base|)) (not (= |c_thr1Thread1of2ForFork0_~#l~0#1.base| |c_ULTIMATE.start_thr1_~#l~0#1.base|)) (forall ((v_ArrVal_2639 Int) (|v_thr1Thread2of2ForFork0_~#l~0#1.base_26| Int) (v_ArrVal_2643 (Array Int Int)) (v_ArrVal_2642 (Array Int Int)) (v_ArrVal_2640 Int) (|v_thr1Thread1of2ForFork0_~#l~0#1.base_56| Int) (aux_div_aux_mod_~s~0_21_32 Int)) (let ((.cse1 (store (store |c_#valid| |c_thr1Thread1of2ForFork0_~#l~0#1.base| v_ArrVal_2639) |c_thr1Thread2of2ForFork0_~#l~0#1.base| v_ArrVal_2640)) (.cse0 (+ (* 4294967296 aux_div_aux_mod_~s~0_21_32) (mod (select (select (store (store |c_#memory_int| |v_thr1Thread1of2ForFork0_~#l~0#1.base_56| v_ArrVal_2642) |v_thr1Thread2of2ForFork0_~#l~0#1.base_26| v_ArrVal_2643) |c_ULTIMATE.start_thr1_~#l~0#1.base|) |c_ULTIMATE.start_thr1_~#l~0#1.offset|) 4294967296)))) (or (<= 4294967296 .cse0) (not (= (select .cse1 |v_thr1Thread1of2ForFork0_~#l~0#1.base_56|) 0)) (not (= (select (store .cse1 |v_thr1Thread1of2ForFork0_~#l~0#1.base_56| 1) |v_thr1Thread2of2ForFork0_~#l~0#1.base_26|) 0)) (< .cse0 0) (= .cse0 (mod (select (select |c_#memory_int| |c_ULTIMATE.start_thr1_~#l~0#1.base|) |c_ULTIMATE.start_thr1_~#l~0#1.offset|) 4294967296)))))) is different from false [2022-11-04 12:10:17,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:10:17,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-04 12:10:17,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-04 12:10:17,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2022-11-04 12:10:17,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 273 states. [2022-11-04 12:10:17,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2022-11-04 12:10:17,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-11-04 12:10:17,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-11-04 12:10:17,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2022-11-04 12:10:17,231 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5241b76-a4dd-4093-9360-7a569b3ee8e3/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-11-04 12:10:17,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5241b76-a4dd-4093-9360-7a569b3ee8e3/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-11-04 12:10:17,407 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-04 12:10:17,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-04 12:10:17,407 INFO L85 PathProgramCache]: Analyzing trace with hash -514695822, now seen corresponding path program 3 times [2022-11-04 12:10:17,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-04 12:10:17,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082889720] [2022-11-04 12:10:17,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-04 12:10:17,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-04 12:10:18,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-04 12:10:19,750 INFO L134 CoverageAnalysis]: Checked inductivity of 3628 backedges. 1276 proven. 129 refuted. 0 times theorem prover too weak. 2223 trivial. 0 not checked. [2022-11-04 12:10:19,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-04 12:10:19,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082889720] [2022-11-04 12:10:19,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082889720] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-04 12:10:19,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [494386337] [2022-11-04 12:10:19,751 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-04 12:10:19,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-04 12:10:19,751 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5241b76-a4dd-4093-9360-7a569b3ee8e3/bin/ugemcutter-C1kR7RIaUi/z3 [2022-11-04 12:10:19,755 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5241b76-a4dd-4093-9360-7a569b3ee8e3/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-04 12:10:19,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5241b76-a4dd-4093-9360-7a569b3ee8e3/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-04 12:10:20,124 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-04 12:10:20,124 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-04 12:10:20,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-04 12:10:20,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-04 12:10:20,179 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-04 12:10:20,468 INFO L356 Elim1Store]: treesize reduction 15, result has 42.3 percent of original size [2022-11-04 12:10:20,469 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 28 [2022-11-04 12:10:20,523 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-11-04 12:10:20,569 INFO L134 CoverageAnalysis]: Checked inductivity of 3628 backedges. 631 proven. 3 refuted. 0 times theorem prover too weak. 2994 trivial. 0 not checked. [2022-11-04 12:10:20,569 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-04 12:10:20,823 INFO L134 CoverageAnalysis]: Checked inductivity of 3628 backedges. 621 proven. 3 refuted. 0 times theorem prover too weak. 3004 trivial. 0 not checked. [2022-11-04 12:10:20,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [494386337] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-04 12:10:20,823 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-04 12:10:20,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 9, 7] total 30 [2022-11-04 12:10:20,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334812880] [2022-11-04 12:10:20,824 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-04 12:10:20,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-04 12:10:20,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-04 12:10:20,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-04 12:10:20,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=797, Unknown=0, NotChecked=0, Total=870 [2022-11-04 12:10:20,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:10:20,828 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-04 12:10:20,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 10.833333333333334) internal successors, (325), 30 states have internal predecessors, (325), 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) [2022-11-04 12:10:20,828 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:10:20,828 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-04 12:10:20,828 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-04 12:10:20,829 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 133 states. [2022-11-04 12:10:20,829 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 273 states. [2022-11-04 12:10:20,829 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 94 states. [2022-11-04 12:10:20,829 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 50 states. [2022-11-04 12:10:20,829 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 90 states. [2022-11-04 12:10:20,829 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 125 states. [2022-11-04 12:10:20,830 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:10:27,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:10:27,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-04 12:10:27,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-04 12:10:27,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2022-11-04 12:10:27,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 273 states. [2022-11-04 12:10:27,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2022-11-04 12:10:27,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-11-04 12:10:27,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2022-11-04 12:10:27,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2022-11-04 12:10:27,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2022-11-04 12:10:27,052 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5241b76-a4dd-4093-9360-7a569b3ee8e3/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-04 12:10:27,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5241b76-a4dd-4093-9360-7a569b3ee8e3/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-04 12:10:27,239 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-04 12:10:27,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-04 12:10:27,240 INFO L85 PathProgramCache]: Analyzing trace with hash 418962568, now seen corresponding path program 1 times [2022-11-04 12:10:27,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-04 12:10:27,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836787473] [2022-11-04 12:10:27,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-04 12:10:27,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-04 12:10:28,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-04 12:10:35,616 INFO L134 CoverageAnalysis]: Checked inductivity of 7031 backedges. 3600 proven. 1272 refuted. 0 times theorem prover too weak. 2159 trivial. 0 not checked. [2022-11-04 12:10:35,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-04 12:10:35,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836787473] [2022-11-04 12:10:35,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836787473] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-04 12:10:35,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1716756271] [2022-11-04 12:10:35,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-04 12:10:35,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-04 12:10:35,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5241b76-a4dd-4093-9360-7a569b3ee8e3/bin/ugemcutter-C1kR7RIaUi/z3 [2022-11-04 12:10:35,619 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5241b76-a4dd-4093-9360-7a569b3ee8e3/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-04 12:10:35,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5241b76-a4dd-4093-9360-7a569b3ee8e3/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-04 12:10:38,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-04 12:10:38,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 2978 conjuncts, 134 conjunts are in the unsatisfiable core [2022-11-04 12:10:38,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-04 12:10:40,923 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-04 12:10:41,608 INFO L356 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-04 12:10:41,608 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 29 [2022-11-04 12:10:41,720 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-04 12:10:41,812 INFO L134 CoverageAnalysis]: Checked inductivity of 7031 backedges. 1332 proven. 5622 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2022-11-04 12:10:41,812 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-04 12:10:42,354 INFO L134 CoverageAnalysis]: Checked inductivity of 7031 backedges. 1747 proven. 3 refuted. 0 times theorem prover too weak. 5281 trivial. 0 not checked. [2022-11-04 12:10:42,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1716756271] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-04 12:10:42,355 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-04 12:10:42,356 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 57, 7] total 83 [2022-11-04 12:10:42,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739033622] [2022-11-04 12:10:42,356 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-04 12:10:42,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2022-11-04 12:10:42,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-04 12:10:42,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2022-11-04 12:10:42,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=6623, Unknown=0, NotChecked=0, Total=6806 [2022-11-04 12:10:42,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:10:42,362 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-04 12:10:42,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 83 states have (on average 13.879518072289157) internal successors, (1152), 83 states have internal predecessors, (1152), 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) [2022-11-04 12:10:42,363 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:10:42,363 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-04 12:10:42,364 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-04 12:10:42,364 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 133 states. [2022-11-04 12:10:42,364 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 273 states. [2022-11-04 12:10:42,364 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 94 states. [2022-11-04 12:10:42,364 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 50 states. [2022-11-04 12:10:42,364 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 93 states. [2022-11-04 12:10:42,365 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 127 states. [2022-11-04 12:10:42,365 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 81 states. [2022-11-04 12:10:42,365 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.