./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-ext/26_stack_cas_longer-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 38b53e6a 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_b3af7413-8acc-43be-8a0f-0b2c1046b49e/bin/ugemcutter-syNpU3ikLH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3af7413-8acc-43be-8a0f-0b2c1046b49e/bin/ugemcutter-syNpU3ikLH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3af7413-8acc-43be-8a0f-0b2c1046b49e/bin/ugemcutter-syNpU3ikLH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3af7413-8acc-43be-8a0f-0b2c1046b49e/bin/ugemcutter-syNpU3ikLH/config/GemCutterReach.xml -i ../../sv-benchmarks/c/pthread-ext/26_stack_cas_longer-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3af7413-8acc-43be-8a0f-0b2c1046b49e/bin/ugemcutter-syNpU3ikLH/config/svcomp-Overflow-32bit-GemCutter_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3af7413-8acc-43be-8a0f-0b2c1046b49e/bin/ugemcutter-syNpU3ikLH --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer GemCutter --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cb8c1938cc441082517c5681097f5f6483a36107a8ec46d723b101297930909d --- 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-38b53e6 [2022-11-25 18:42:41,130 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 18:42:41,132 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 18:42:41,156 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 18:42:41,156 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 18:42:41,157 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 18:42:41,159 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 18:42:41,173 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 18:42:41,174 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 18:42:41,175 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 18:42:41,176 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 18:42:41,178 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 18:42:41,178 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 18:42:41,179 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 18:42:41,180 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 18:42:41,181 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 18:42:41,182 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 18:42:41,183 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 18:42:41,185 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 18:42:41,187 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 18:42:41,188 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 18:42:41,190 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 18:42:41,191 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 18:42:41,203 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 18:42:41,207 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 18:42:41,207 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 18:42:41,208 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 18:42:41,209 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 18:42:41,209 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 18:42:41,210 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 18:42:41,211 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 18:42:41,212 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 18:42:41,213 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 18:42:41,214 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 18:42:41,215 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 18:42:41,215 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 18:42:41,216 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 18:42:41,216 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 18:42:41,217 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 18:42:41,218 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 18:42:41,218 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 18:42:41,219 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3af7413-8acc-43be-8a0f-0b2c1046b49e/bin/ugemcutter-syNpU3ikLH/config/svcomp-Overflow-32bit-GemCutter_Default.epf [2022-11-25 18:42:41,244 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 18:42:41,245 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 18:42:41,245 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 18:42:41,245 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 18:42:41,246 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 18:42:41,246 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 18:42:41,247 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 18:42:41,247 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 18:42:41,248 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 18:42:41,248 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 18:42:41,248 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 18:42:41,249 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 18:42:41,249 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 18:42:41,249 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 18:42:41,249 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 18:42:41,250 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 18:42:41,250 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 18:42:41,250 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 18:42:41,250 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-25 18:42:41,251 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 18:42:41,251 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 18:42:41,251 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 18:42:41,251 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 18:42:41,252 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 18:42:41,252 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 18:42:41,252 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 18:42:41,252 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:42:41,253 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 18:42:41,253 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 18:42:41,253 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 18:42:41,254 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 18:42:41,254 INFO L138 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2022-11-25 18:42:41,254 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 18:42:41,254 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-25 18:42:41,255 INFO L138 SettingsManager]: * Abstraction used for commutativity in POR=VARIABLES_GLOBAL [2022-11-25 18:42:41,255 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-11-25 18:42:41,255 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 18:42:41,255 INFO L138 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2022-11-25 18:42:41,255 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2022-11-25 18:42:41,256 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_b3af7413-8acc-43be-8a0f-0b2c1046b49e/bin/ugemcutter-syNpU3ikLH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3af7413-8acc-43be-8a0f-0b2c1046b49e/bin/ugemcutter-syNpU3ikLH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> GemCutter Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cb8c1938cc441082517c5681097f5f6483a36107a8ec46d723b101297930909d [2022-11-25 18:42:41,579 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 18:42:41,604 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 18:42:41,607 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 18:42:41,609 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 18:42:41,609 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 18:42:41,611 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3af7413-8acc-43be-8a0f-0b2c1046b49e/bin/ugemcutter-syNpU3ikLH/../../sv-benchmarks/c/pthread-ext/26_stack_cas_longer-2.i [2022-11-25 18:42:44,857 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 18:42:45,181 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 18:42:45,182 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3af7413-8acc-43be-8a0f-0b2c1046b49e/sv-benchmarks/c/pthread-ext/26_stack_cas_longer-2.i [2022-11-25 18:42:45,196 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3af7413-8acc-43be-8a0f-0b2c1046b49e/bin/ugemcutter-syNpU3ikLH/data/f2a61823c/1e95083545224da2bd7d48dd6e41ac29/FLAG4a165b320 [2022-11-25 18:42:45,213 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3af7413-8acc-43be-8a0f-0b2c1046b49e/bin/ugemcutter-syNpU3ikLH/data/f2a61823c/1e95083545224da2bd7d48dd6e41ac29 [2022-11-25 18:42:45,216 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 18:42:45,218 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 18:42:45,220 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 18:42:45,220 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 18:42:45,224 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 18:42:45,225 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:42:45" (1/1) ... [2022-11-25 18:42:45,226 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a983068 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:42:45, skipping insertion in model container [2022-11-25 18:42:45,227 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:42:45" (1/1) ... [2022-11-25 18:42:45,235 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 18:42:45,273 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 18:42:45,657 WARN L237 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_b3af7413-8acc-43be-8a0f-0b2c1046b49e/sv-benchmarks/c/pthread-ext/26_stack_cas_longer-2.i[31163,31176] [2022-11-25 18:42:45,665 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:42:45,677 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 18:42:45,725 WARN L237 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_b3af7413-8acc-43be-8a0f-0b2c1046b49e/sv-benchmarks/c/pthread-ext/26_stack_cas_longer-2.i[31163,31176] [2022-11-25 18:42:45,729 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:42:45,769 INFO L208 MainTranslator]: Completed translation [2022-11-25 18:42:45,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:42:45 WrapperNode [2022-11-25 18:42:45,770 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 18:42:45,771 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 18:42:45,772 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 18:42:45,772 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 18:42:45,779 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:42:45" (1/1) ... [2022-11-25 18:42:45,819 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:42:45" (1/1) ... [2022-11-25 18:42:45,860 INFO L138 Inliner]: procedures = 177, calls = 47, calls flagged for inlining = 16, calls inlined = 19, statements flattened = 197 [2022-11-25 18:42:45,860 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 18:42:45,862 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 18:42:45,863 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 18:42:45,863 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 18:42:45,872 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:42:45" (1/1) ... [2022-11-25 18:42:45,873 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:42:45" (1/1) ... [2022-11-25 18:42:45,888 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:42:45" (1/1) ... [2022-11-25 18:42:45,890 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:42:45" (1/1) ... [2022-11-25 18:42:45,897 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:42:45" (1/1) ... [2022-11-25 18:42:45,912 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:42:45" (1/1) ... [2022-11-25 18:42:45,920 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:42:45" (1/1) ... [2022-11-25 18:42:45,922 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:42:45" (1/1) ... [2022-11-25 18:42:45,931 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 18:42:45,932 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 18:42:45,932 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 18:42:45,932 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 18:42:45,933 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:42:45" (1/1) ... [2022-11-25 18:42:45,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:42:45,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3af7413-8acc-43be-8a0f-0b2c1046b49e/bin/ugemcutter-syNpU3ikLH/z3 [2022-11-25 18:42:45,973 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3af7413-8acc-43be-8a0f-0b2c1046b49e/bin/ugemcutter-syNpU3ikLH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 18:42:45,981 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3af7413-8acc-43be-8a0f-0b2c1046b49e/bin/ugemcutter-syNpU3ikLH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 18:42:46,011 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 18:42:46,011 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-11-25 18:42:46,011 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-11-25 18:42:46,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 18:42:46,012 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 18:42:46,012 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 18:42:46,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 18:42:46,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 18:42:46,013 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 18:42:46,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 18:42:46,015 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-25 18:42:46,197 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 18:42:46,200 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 18:42:46,700 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 18:42:46,886 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 18:42:46,886 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-25 18:42:46,888 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:42:46 BoogieIcfgContainer [2022-11-25 18:42:46,889 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 18:42:46,892 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 18:42:46,892 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 18:42:46,895 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 18:42:46,896 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:42:45" (1/3) ... [2022-11-25 18:42:46,896 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a9137b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:42:46, skipping insertion in model container [2022-11-25 18:42:46,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:42:45" (2/3) ... [2022-11-25 18:42:46,897 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a9137b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:42:46, skipping insertion in model container [2022-11-25 18:42:46,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:42:46" (3/3) ... [2022-11-25 18:42:46,899 INFO L112 eAbstractionObserver]: Analyzing ICFG 26_stack_cas_longer-2.i [2022-11-25 18:42:46,908 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-25 18:42:46,918 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 18:42:46,918 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-11-25 18:42:46,918 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 18:42:46,993 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-25 18:42:47,047 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 18:42:47,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-11-25 18:42:47,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3af7413-8acc-43be-8a0f-0b2c1046b49e/bin/ugemcutter-syNpU3ikLH/z3 [2022-11-25 18:42:47,054 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3af7413-8acc-43be-8a0f-0b2c1046b49e/bin/ugemcutter-syNpU3ikLH/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-11-25 18:42:47,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3af7413-8acc-43be-8a0f-0b2c1046b49e/bin/ugemcutter-syNpU3ikLH/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2022-11-25 18:42:47,118 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-11-25 18:42:47,133 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thr1Thread1of1ForFork0 ======== [2022-11-25 18:42:47,141 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;@5672db4c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 18:42:47,141 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-11-25 18:42:47,641 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-25 18:42:47,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:42:47,647 INFO L85 PathProgramCache]: Analyzing trace with hash 1994452145, now seen corresponding path program 1 times [2022-11-25 18:42:47,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:42:47,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050475680] [2022-11-25 18:42:47,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:42:47,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:42:47,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:42:48,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:42:48,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:42:48,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050475680] [2022-11-25 18:42:48,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050475680] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:42:48,192 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:42:48,192 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 18:42:48,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128071808] [2022-11-25 18:42:48,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:42:48,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:42:48,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:42:48,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:42:48,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:42:48,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:42:48,240 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-25 18:42:48,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 32.5) internal successors, (65), 3 states have internal predecessors, (65), 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) [2022-11-25 18:42:48,241 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:42:48,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:42:48,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 18:42:48,479 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-25 18:42:48,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:42:48,479 INFO L85 PathProgramCache]: Analyzing trace with hash 711383176, now seen corresponding path program 1 times [2022-11-25 18:42:48,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:42:48,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398928922] [2022-11-25 18:42:48,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:42:48,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:42:48,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:42:48,773 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:42:48,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:42:48,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398928922] [2022-11-25 18:42:48,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398928922] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:42:48,774 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:42:48,775 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 18:42:48,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5614271] [2022-11-25 18:42:48,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:42:48,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 18:42:48,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:42:48,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 18:42:48,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 18:42:48,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:42:48,780 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-25 18:42:48,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 states have internal predecessors, (111), 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) [2022-11-25 18:42:48,781 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:42:48,781 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:42:49,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:42:49,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 18:42:49,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 18:42:49,198 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-25 18:42:49,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:42:49,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1850859273, now seen corresponding path program 1 times [2022-11-25 18:42:49,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:42:49,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919761374] [2022-11-25 18:42:49,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:42:49,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:42:49,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:42:49,546 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:42:49,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:42:49,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919761374] [2022-11-25 18:42:49,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919761374] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:42:49,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1437403971] [2022-11-25 18:42:49,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:42:49,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:42:49,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3af7413-8acc-43be-8a0f-0b2c1046b49e/bin/ugemcutter-syNpU3ikLH/z3 [2022-11-25 18:42:49,552 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3af7413-8acc-43be-8a0f-0b2c1046b49e/bin/ugemcutter-syNpU3ikLH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:42:49,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3af7413-8acc-43be-8a0f-0b2c1046b49e/bin/ugemcutter-syNpU3ikLH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 18:42:49,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:42:49,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 18:42:49,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:42:50,018 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:42:50,018 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:42:50,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1437403971] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:42:50,019 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 18:42:50,019 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2022-11-25 18:42:50,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953281418] [2022-11-25 18:42:50,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:42:50,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 18:42:50,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:42:50,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 18:42:50,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 18:42:50,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:42:50,025 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-25 18:42:50,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 41.666666666666664) internal successors, (125), 4 states have internal predecessors, (125), 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) [2022-11-25 18:42:50,026 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:42:50,026 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-11-25 18:42:50,026 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:42:50,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:42:50,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 18:42:50,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:42:50,159 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3af7413-8acc-43be-8a0f-0b2c1046b49e/bin/ugemcutter-syNpU3ikLH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-25 18:42:50,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3af7413-8acc-43be-8a0f-0b2c1046b49e/bin/ugemcutter-syNpU3ikLH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:42:50,353 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-25 18:42:50,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:42:50,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1542063302, now seen corresponding path program 1 times [2022-11-25 18:42:50,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:42:50,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249913460] [2022-11-25 18:42:50,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:42:50,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:42:50,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:42:50,580 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:42:50,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:42:50,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249913460] [2022-11-25 18:42:50,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249913460] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:42:50,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1851885750] [2022-11-25 18:42:50,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:42:50,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:42:50,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3af7413-8acc-43be-8a0f-0b2c1046b49e/bin/ugemcutter-syNpU3ikLH/z3 [2022-11-25 18:42:50,583 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3af7413-8acc-43be-8a0f-0b2c1046b49e/bin/ugemcutter-syNpU3ikLH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:42:50,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3af7413-8acc-43be-8a0f-0b2c1046b49e/bin/ugemcutter-syNpU3ikLH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 18:42:50,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:42:50,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 18:42:50,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:42:51,021 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:42:51,021 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:42:51,238 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:42:51,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1851885750] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:42:51,239 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 18:42:51,239 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-11-25 18:42:51,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935138438] [2022-11-25 18:42:51,240 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 18:42:51,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 18:42:51,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:42:51,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 18:42:51,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-25 18:42:51,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:42:51,248 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-25 18:42:51,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 51.166666666666664) internal successors, (307), 7 states have internal predecessors, (307), 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) [2022-11-25 18:42:51,248 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:42:51,249 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-11-25 18:42:51,249 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:42:51,249 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:42:51,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:42:51,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 18:42:51,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:42:51,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 18:42:51,493 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3af7413-8acc-43be-8a0f-0b2c1046b49e/bin/ugemcutter-syNpU3ikLH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-25 18:42:51,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3af7413-8acc-43be-8a0f-0b2c1046b49e/bin/ugemcutter-syNpU3ikLH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:42:51,699 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-25 18:42:51,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:42:51,700 INFO L85 PathProgramCache]: Analyzing trace with hash 662498643, now seen corresponding path program 1 times [2022-11-25 18:42:51,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:42:51,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789401237] [2022-11-25 18:42:51,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:42:51,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:42:51,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:42:51,893 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2022-11-25 18:42:51,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:42:51,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789401237] [2022-11-25 18:42:51,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789401237] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:42:51,894 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:42:51,894 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:42:51,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537573112] [2022-11-25 18:42:51,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:42:51,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 18:42:51,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:42:51,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 18:42:51,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 18:42:51,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:42:51,899 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-25 18:42:51,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 38.0) internal successors, (114), 4 states have internal predecessors, (114), 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) [2022-11-25 18:42:51,899 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:42:51,899 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-11-25 18:42:51,900 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:42:51,900 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2022-11-25 18:42:51,900 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:42:51,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:42:51,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 18:42:51,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:42:51,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 18:42:51,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:42:51,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 18:42:51,999 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-25 18:42:51,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:42:52,000 INFO L85 PathProgramCache]: Analyzing trace with hash -937377831, now seen corresponding path program 1 times [2022-11-25 18:42:52,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:42:52,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388143263] [2022-11-25 18:42:52,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:42:52,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:42:52,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:42:52,153 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2022-11-25 18:42:52,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:42:52,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388143263] [2022-11-25 18:42:52,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388143263] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:42:52,154 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:42:52,154 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:42:52,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413058954] [2022-11-25 18:42:52,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:42:52,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 18:42:52,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:42:52,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 18:42:52,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 18:42:52,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:42:52,158 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-25 18:42:52,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 38.333333333333336) internal successors, (115), 4 states have internal predecessors, (115), 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) [2022-11-25 18:42:52,159 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:42:52,159 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-11-25 18:42:52,159 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:42:52,160 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2022-11-25 18:42:52,160 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:42:52,160 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:42:52,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:42:52,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 18:42:52,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:42:52,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 18:42:52,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:42:52,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:42:52,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 18:42:52,259 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-25 18:42:52,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:42:52,260 INFO L85 PathProgramCache]: Analyzing trace with hash 960305469, now seen corresponding path program 1 times [2022-11-25 18:42:52,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:42:52,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931949110] [2022-11-25 18:42:52,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:42:52,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:42:52,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:42:52,645 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 0 proven. 116 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:42:52,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:42:52,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931949110] [2022-11-25 18:42:52,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931949110] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:42:52,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [555687689] [2022-11-25 18:42:52,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:42:52,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:42:52,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3af7413-8acc-43be-8a0f-0b2c1046b49e/bin/ugemcutter-syNpU3ikLH/z3 [2022-11-25 18:42:52,651 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3af7413-8acc-43be-8a0f-0b2c1046b49e/bin/ugemcutter-syNpU3ikLH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:42:52,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3af7413-8acc-43be-8a0f-0b2c1046b49e/bin/ugemcutter-syNpU3ikLH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-25 18:42:52,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:42:52,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 536 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 18:42:52,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:42:53,208 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 105 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:42:53,209 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:42:53,553 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 105 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:42:53,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [555687689] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:42:53,553 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 18:42:53,554 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2022-11-25 18:42:53,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411273380] [2022-11-25 18:42:53,554 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 18:42:53,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-25 18:42:53,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:42:53,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-25 18:42:53,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=331, Unknown=0, NotChecked=0, Total=380 [2022-11-25 18:42:53,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:42:53,562 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-25 18:42:53,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 24.05) internal successors, (481), 20 states have internal predecessors, (481), 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) [2022-11-25 18:42:53,563 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:42:53,563 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-11-25 18:42:53,563 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:42:53,564 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2022-11-25 18:42:53,564 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:42:53,564 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:42:53,564 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:42:54,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:42:54,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 18:42:54,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:42:54,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 18:42:54,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:42:54,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:42:54,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-25 18:42:54,812 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3af7413-8acc-43be-8a0f-0b2c1046b49e/bin/ugemcutter-syNpU3ikLH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-25 18:42:54,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3af7413-8acc-43be-8a0f-0b2c1046b49e/bin/ugemcutter-syNpU3ikLH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:42:54,996 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-25 18:42:54,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:42:54,997 INFO L85 PathProgramCache]: Analyzing trace with hash -1612392286, now seen corresponding path program 1 times [2022-11-25 18:42:54,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:42:54,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984656446] [2022-11-25 18:42:54,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:42:54,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:42:55,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:42:55,528 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 0 proven. 293 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:42:55,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:42:55,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984656446] [2022-11-25 18:42:55,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984656446] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:42:55,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2032045539] [2022-11-25 18:42:55,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:42:55,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:42:55,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3af7413-8acc-43be-8a0f-0b2c1046b49e/bin/ugemcutter-syNpU3ikLH/z3 [2022-11-25 18:42:55,534 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3af7413-8acc-43be-8a0f-0b2c1046b49e/bin/ugemcutter-syNpU3ikLH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:42:55,572 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3af7413-8acc-43be-8a0f-0b2c1046b49e/bin/ugemcutter-syNpU3ikLH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-25 18:42:55,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:42:55,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 759 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-25 18:42:55,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:42:56,227 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 0 proven. 293 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:42:56,228 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:42:56,784 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 0 proven. 293 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:42:56,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2032045539] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:42:56,785 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 18:42:56,785 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-11-25 18:42:56,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656910343] [2022-11-25 18:42:56,786 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 18:42:56,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-25 18:42:56,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:42:56,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-25 18:42:56,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2022-11-25 18:42:56,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:42:56,791 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-25 18:42:56,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 31.944444444444443) internal successors, (575), 19 states have internal predecessors, (575), 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) [2022-11-25 18:42:56,792 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:42:56,792 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-11-25 18:42:56,792 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:42:56,792 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2022-11-25 18:42:56,792 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:42:56,792 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:42:56,793 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 39 states. [2022-11-25 18:42:56,793 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:42:58,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:42:58,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 18:42:58,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:42:58,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 18:42:58,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:42:58,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:42:58,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-11-25 18:42:58,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-25 18:42:58,221 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 10 remaining) [2022-11-25 18:42:58,221 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 10 remaining) [2022-11-25 18:42:58,222 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 10 remaining) [2022-11-25 18:42:58,222 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 10 remaining) [2022-11-25 18:42:58,222 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 10 remaining) [2022-11-25 18:42:58,222 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 10 remaining) [2022-11-25 18:42:58,222 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 10 remaining) [2022-11-25 18:42:58,223 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 10 remaining) [2022-11-25 18:42:58,224 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 10 remaining) [2022-11-25 18:42:58,225 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 10 remaining) [2022-11-25 18:42:58,239 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3af7413-8acc-43be-8a0f-0b2c1046b49e/bin/ugemcutter-syNpU3ikLH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-25 18:42:58,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3af7413-8acc-43be-8a0f-0b2c1046b49e/bin/ugemcutter-syNpU3ikLH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:42:58,442 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:42:58,445 INFO L307 ceAbstractionStarter]: Result for error location thr1Thread1of1ForFork0 was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2022-11-25 18:42:58,458 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 18:42:58,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-11-25 18:42:58,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3af7413-8acc-43be-8a0f-0b2c1046b49e/bin/ugemcutter-syNpU3ikLH/z3 [2022-11-25 18:42:58,462 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3af7413-8acc-43be-8a0f-0b2c1046b49e/bin/ugemcutter-syNpU3ikLH/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-11-25 18:42:58,472 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-11-25 18:42:58,473 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2022-11-25 18:42:58,473 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;@5672db4c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 18:42:58,473 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-25 18:42:58,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3af7413-8acc-43be-8a0f-0b2c1046b49e/bin/ugemcutter-syNpU3ikLH/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (7)] Waiting until timeout for monitored process [2022-11-25 18:42:58,662 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-25 18:42:58,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:42:58,662 INFO L85 PathProgramCache]: Analyzing trace with hash -1926024397, now seen corresponding path program 1 times [2022-11-25 18:42:58,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:42:58,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213233368] [2022-11-25 18:42:58,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:42:58,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:42:58,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:42:58,688 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:42:58,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:42:58,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213233368] [2022-11-25 18:42:58,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213233368] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:42:58,689 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:42:58,689 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 18:42:58,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015543024] [2022-11-25 18:42:58,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:42:58,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 18:42:58,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:42:58,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 18:42:58,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 18:42:58,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:42:58,692 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-25 18:42:58,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 29.5) internal successors, (59), 2 states have internal predecessors, (59), 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) [2022-11-25 18:42:58,692 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:42:58,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:42:58,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-25 18:42:58,715 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-25 18:42:58,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:42:58,715 INFO L85 PathProgramCache]: Analyzing trace with hash -650252501, now seen corresponding path program 1 times [2022-11-25 18:42:58,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:42:58,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500997809] [2022-11-25 18:42:58,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:42:58,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:42:58,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:42:58,798 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:42:58,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:42:58,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500997809] [2022-11-25 18:42:58,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500997809] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:42:58,799 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:42:58,799 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:42:58,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845448130] [2022-11-25 18:42:58,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:42:58,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:42:58,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:42:58,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:42:58,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:42:58,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:42:58,805 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-25 18:42:58,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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) [2022-11-25 18:42:58,806 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:42:58,806 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:42:58,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:42:58,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:42:58,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-25 18:42:58,880 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-25 18:42:58,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:42:58,881 INFO L85 PathProgramCache]: Analyzing trace with hash 1685816671, now seen corresponding path program 1 times [2022-11-25 18:42:58,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:42:58,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937323183] [2022-11-25 18:42:58,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:42:58,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:42:58,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:42:59,014 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:42:59,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:42:59,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937323183] [2022-11-25 18:42:59,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937323183] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:42:59,015 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:42:59,015 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 18:42:59,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034000152] [2022-11-25 18:42:59,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:42:59,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 18:42:59,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:42:59,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 18:42:59,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 18:42:59,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:42:59,017 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-25 18:42:59,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 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) [2022-11-25 18:42:59,018 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:42:59,018 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:42:59,018 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:42:59,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:42:59,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:42:59,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 18:42:59,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-25 18:42:59,214 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-25 18:42:59,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:42:59,216 INFO L85 PathProgramCache]: Analyzing trace with hash -1880114487, now seen corresponding path program 1 times [2022-11-25 18:42:59,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:42:59,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333170051] [2022-11-25 18:42:59,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:42:59,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:42:59,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 18:42:59,293 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 18:42:59,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 18:42:59,396 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 18:42:59,398 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 18:42:59,398 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2022-11-25 18:42:59,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-25 18:42:59,410 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-11-25 18:42:59,411 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.start was UNSAFE (2/2) [2022-11-25 18:42:59,411 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-25 18:42:59,411 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-25 18:42:59,492 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-25 18:42:59,498 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 18:42:59,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-11-25 18:42:59,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3af7413-8acc-43be-8a0f-0b2c1046b49e/bin/ugemcutter-syNpU3ikLH/z3 [2022-11-25 18:42:59,506 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3af7413-8acc-43be-8a0f-0b2c1046b49e/bin/ugemcutter-syNpU3ikLH/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-11-25 18:42:59,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3af7413-8acc-43be-8a0f-0b2c1046b49e/bin/ugemcutter-syNpU3ikLH/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (8)] Waiting until timeout for monitored process [2022-11-25 18:42:59,513 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-11-25 18:42:59,513 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2022-11-25 18:42:59,514 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;@5672db4c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 18:42:59,514 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-25 18:42:59,742 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-25 18:42:59,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:42:59,743 INFO L85 PathProgramCache]: Analyzing trace with hash 529736031, now seen corresponding path program 1 times [2022-11-25 18:42:59,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:42:59,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309796285] [2022-11-25 18:42:59,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:42:59,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:42:59,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:42:59,779 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-25 18:42:59,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:42:59,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309796285] [2022-11-25 18:42:59,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309796285] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:42:59,780 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:42:59,780 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 18:42:59,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981399698] [2022-11-25 18:42:59,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:42:59,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 18:42:59,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:42:59,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 18:42:59,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 18:42:59,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:42:59,782 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-25 18:42:59,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 42.0) internal successors, (84), 2 states have internal predecessors, (84), 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) [2022-11-25 18:42:59,783 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:42:59,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:42:59,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-25 18:42:59,846 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-25 18:42:59,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:42:59,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1737955980, now seen corresponding path program 1 times [2022-11-25 18:42:59,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:42:59,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783259879] [2022-11-25 18:42:59,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:42:59,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:42:59,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:42:59,949 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-25 18:42:59,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:42:59,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783259879] [2022-11-25 18:42:59,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783259879] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:42:59,950 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:42:59,950 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:42:59,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568693938] [2022-11-25 18:42:59,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:42:59,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:42:59,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:42:59,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:42:59,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:42:59,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:42:59,953 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-25 18:42:59,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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) [2022-11-25 18:42:59,953 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:42:59,953 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:43:00,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:43:00,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:43:00,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-25 18:43:00,179 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-25 18:43:00,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:43:00,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1248805225, now seen corresponding path program 1 times [2022-11-25 18:43:00,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:43:00,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919755133] [2022-11-25 18:43:00,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:43:00,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:43:00,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:43:00,366 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-25 18:43:00,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:43:00,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919755133] [2022-11-25 18:43:00,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919755133] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:43:00,367 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:43:00,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 18:43:00,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090932459] [2022-11-25 18:43:00,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:43:00,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 18:43:00,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:43:00,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 18:43:00,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 18:43:00,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:43:00,371 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-25 18:43:00,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.0) internal successors, (147), 7 states have internal predecessors, (147), 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) [2022-11-25 18:43:00,372 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:43:00,372 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:43:00,372 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:43:00,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:43:00,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:43:00,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 18:43:00,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-25 18:43:00,723 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-25 18:43:00,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:43:00,724 INFO L85 PathProgramCache]: Analyzing trace with hash -816593051, now seen corresponding path program 1 times [2022-11-25 18:43:00,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:43:00,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88297763] [2022-11-25 18:43:00,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:43:00,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:43:00,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:43:01,075 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:43:01,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:43:01,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88297763] [2022-11-25 18:43:01,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88297763] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:43:01,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [505764459] [2022-11-25 18:43:01,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:43:01,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:43:01,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3af7413-8acc-43be-8a0f-0b2c1046b49e/bin/ugemcutter-syNpU3ikLH/z3 [2022-11-25 18:43:01,082 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3af7413-8acc-43be-8a0f-0b2c1046b49e/bin/ugemcutter-syNpU3ikLH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:43:01,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3af7413-8acc-43be-8a0f-0b2c1046b49e/bin/ugemcutter-syNpU3ikLH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-25 18:43:01,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:43:01,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 454 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 18:43:01,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:43:01,409 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:43:01,409 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:43:01,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [505764459] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:43:01,410 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 18:43:01,410 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 11 [2022-11-25 18:43:01,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584046683] [2022-11-25 18:43:01,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:43:01,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 18:43:01,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:43:01,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 18:43:01,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-11-25 18:43:01,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:43:01,413 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-25 18:43:01,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:43:01,413 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:43:01,413 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:43:01,414 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-11-25 18:43:01,414 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:43:01,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:43:01,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:43:01,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 18:43:01,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:43:01,553 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3af7413-8acc-43be-8a0f-0b2c1046b49e/bin/ugemcutter-syNpU3ikLH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-25 18:43:01,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3af7413-8acc-43be-8a0f-0b2c1046b49e/bin/ugemcutter-syNpU3ikLH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-25 18:43:01,748 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-25 18:43:01,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:43:01,749 INFO L85 PathProgramCache]: Analyzing trace with hash 1196450625, now seen corresponding path program 1 times [2022-11-25 18:43:01,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:43:01,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842620692] [2022-11-25 18:43:01,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:43:01,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:43:01,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:43:01,891 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:43:01,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:43:01,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842620692] [2022-11-25 18:43:01,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842620692] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:43:01,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1538419266] [2022-11-25 18:43:01,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:43:01,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:43:01,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3af7413-8acc-43be-8a0f-0b2c1046b49e/bin/ugemcutter-syNpU3ikLH/z3 [2022-11-25 18:43:01,894 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3af7413-8acc-43be-8a0f-0b2c1046b49e/bin/ugemcutter-syNpU3ikLH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:43:01,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3af7413-8acc-43be-8a0f-0b2c1046b49e/bin/ugemcutter-syNpU3ikLH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-25 18:43:02,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:43:02,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 446 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 18:43:02,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:43:02,341 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:43:02,341 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:43:02,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1538419266] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:43:02,342 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 18:43:02,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2022-11-25 18:43:02,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885986033] [2022-11-25 18:43:02,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:43:02,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 18:43:02,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:43:02,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 18:43:02,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 18:43:02,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:43:02,345 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-25 18:43:02,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 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) [2022-11-25 18:43:02,346 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:43:02,346 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:43:02,346 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-11-25 18:43:02,346 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:43:02,346 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:43:02,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:43:02,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:43:02,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 18:43:02,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:43:02,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:43:02,504 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3af7413-8acc-43be-8a0f-0b2c1046b49e/bin/ugemcutter-syNpU3ikLH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-25 18:43:02,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3af7413-8acc-43be-8a0f-0b2c1046b49e/bin/ugemcutter-syNpU3ikLH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-25 18:43:02,704 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-25 18:43:02,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:43:02,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1482829649, now seen corresponding path program 1 times [2022-11-25 18:43:02,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:43:02,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796112225] [2022-11-25 18:43:02,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:43:02,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:43:02,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:43:02,870 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:43:02,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:43:02,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796112225] [2022-11-25 18:43:02,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796112225] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:43:02,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [608353533] [2022-11-25 18:43:02,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:43:02,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:43:02,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3af7413-8acc-43be-8a0f-0b2c1046b49e/bin/ugemcutter-syNpU3ikLH/z3 [2022-11-25 18:43:02,873 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3af7413-8acc-43be-8a0f-0b2c1046b49e/bin/ugemcutter-syNpU3ikLH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:43:02,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3af7413-8acc-43be-8a0f-0b2c1046b49e/bin/ugemcutter-syNpU3ikLH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-25 18:43:03,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:43:03,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 18:43:03,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:43:03,305 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:43:03,305 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:43:03,540 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:43:03,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [608353533] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:43:03,540 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 18:43:03,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-11-25 18:43:03,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783166999] [2022-11-25 18:43:03,541 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 18:43:03,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 18:43:03,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:43:03,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 18:43:03,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-25 18:43:03,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:43:03,544 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-25 18:43:03,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 48.857142857142854) internal successors, (342), 7 states have internal predecessors, (342), 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) [2022-11-25 18:43:03,545 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:43:03,545 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:43:03,545 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-11-25 18:43:03,545 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:43:03,545 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:43:03,545 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:43:03,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:43:03,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:43:03,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 18:43:03,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:43:03,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:43:03,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 18:43:03,795 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3af7413-8acc-43be-8a0f-0b2c1046b49e/bin/ugemcutter-syNpU3ikLH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-25 18:43:03,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3af7413-8acc-43be-8a0f-0b2c1046b49e/bin/ugemcutter-syNpU3ikLH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-25 18:43:03,994 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-25 18:43:03,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:43:03,995 INFO L85 PathProgramCache]: Analyzing trace with hash -1641401936, now seen corresponding path program 1 times [2022-11-25 18:43:03,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:43:03,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831839324] [2022-11-25 18:43:03,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:43:03,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:43:04,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:43:04,338 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:43:04,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:43:04,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831839324] [2022-11-25 18:43:04,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831839324] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:43:04,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1669690212] [2022-11-25 18:43:04,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:43:04,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:43:04,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3af7413-8acc-43be-8a0f-0b2c1046b49e/bin/ugemcutter-syNpU3ikLH/z3 [2022-11-25 18:43:04,341 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3af7413-8acc-43be-8a0f-0b2c1046b49e/bin/ugemcutter-syNpU3ikLH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:43:04,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3af7413-8acc-43be-8a0f-0b2c1046b49e/bin/ugemcutter-syNpU3ikLH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-25 18:43:04,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:43:04,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 506 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 18:43:04,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:43:04,860 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:43:04,860 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:43:04,860 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1669690212] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:43:04,860 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 18:43:04,861 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 9 [2022-11-25 18:43:04,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385956172] [2022-11-25 18:43:04,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:43:04,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 18:43:04,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:43:04,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 18:43:04,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-25 18:43:04,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:43:04,864 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-25 18:43:04,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.25) internal successors, (170), 8 states have internal predecessors, (170), 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) [2022-11-25 18:43:04,864 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:43:04,865 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:43:04,865 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-11-25 18:43:04,865 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:43:04,865 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:43:04,865 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2022-11-25 18:43:04,865 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:43:05,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:43:05,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:43:05,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 18:43:05,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:43:05,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:43:05,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 18:43:05,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 18:43:05,205 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3af7413-8acc-43be-8a0f-0b2c1046b49e/bin/ugemcutter-syNpU3ikLH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-25 18:43:05,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3af7413-8acc-43be-8a0f-0b2c1046b49e/bin/ugemcutter-syNpU3ikLH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:43:05,400 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-25 18:43:05,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:43:05,401 INFO L85 PathProgramCache]: Analyzing trace with hash -1557205706, now seen corresponding path program 1 times [2022-11-25 18:43:05,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:43:05,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864628682] [2022-11-25 18:43:05,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:43:05,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:43:05,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:43:05,506 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-25 18:43:05,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:43:05,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864628682] [2022-11-25 18:43:05,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864628682] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:43:05,507 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:43:05,508 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 18:43:05,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30696659] [2022-11-25 18:43:05,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:43:05,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 18:43:05,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:43:05,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 18:43:05,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 18:43:05,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:43:05,510 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-25 18:43:05,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 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) [2022-11-25 18:43:05,511 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:43:05,511 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:43:05,511 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-11-25 18:43:05,511 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:43:05,511 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:43:05,511 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2022-11-25 18:43:05,512 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-11-25 18:43:05,512 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:43:05,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:43:05,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:43:05,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 18:43:05,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:43:05,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:43:05,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 18:43:05,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 18:43:05,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:43:05,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-25 18:43:05,647 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-25 18:43:05,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:43:05,647 INFO L85 PathProgramCache]: Analyzing trace with hash -30697158, now seen corresponding path program 1 times [2022-11-25 18:43:05,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:43:05,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220944077] [2022-11-25 18:43:05,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:43:05,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:43:05,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 18:43:05,834 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 18:43:05,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 18:43:06,033 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 18:43:06,033 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 18:43:06,034 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2022-11-25 18:43:06,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-25 18:43:06,046 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:43:06,046 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.start was UNSAFE (1/3) [2022-11-25 18:43:06,046 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-25 18:43:06,046 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-25 18:43:06,125 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-25 18:43:06,130 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 18:43:06,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-11-25 18:43:06,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3af7413-8acc-43be-8a0f-0b2c1046b49e/bin/ugemcutter-syNpU3ikLH/z3 [2022-11-25 18:43:06,135 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3af7413-8acc-43be-8a0f-0b2c1046b49e/bin/ugemcutter-syNpU3ikLH/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-11-25 18:43:06,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3af7413-8acc-43be-8a0f-0b2c1046b49e/bin/ugemcutter-syNpU3ikLH/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (13)] Waiting until timeout for monitored process [2022-11-25 18:43:06,141 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-11-25 18:43:06,141 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thr1Thread3of3ForFork0 ======== [2022-11-25 18:43:06,142 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;@5672db4c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 18:43:06,142 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-11-25 18:43:06,471 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-25 18:43:06,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:43:06,471 INFO L85 PathProgramCache]: Analyzing trace with hash -1076959431, now seen corresponding path program 1 times [2022-11-25 18:43:06,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:43:06,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995365691] [2022-11-25 18:43:06,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:43:06,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:43:06,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:43:06,509 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-25 18:43:06,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:43:06,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995365691] [2022-11-25 18:43:06,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995365691] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:43:06,510 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:43:06,510 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 18:43:06,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805866558] [2022-11-25 18:43:06,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:43:06,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 18:43:06,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:43:06,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 18:43:06,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 18:43:06,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:43:06,513 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-25 18:43:06,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 58.5) internal successors, (117), 2 states have internal predecessors, (117), 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) [2022-11-25 18:43:06,513 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:43:06,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:43:06,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-25 18:43:06,665 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-25 18:43:06,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:43:06,666 INFO L85 PathProgramCache]: Analyzing trace with hash -538322356, now seen corresponding path program 1 times [2022-11-25 18:43:06,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:43:06,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064419482] [2022-11-25 18:43:06,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:43:06,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:43:06,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:43:06,839 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-25 18:43:06,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:43:06,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064419482] [2022-11-25 18:43:06,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064419482] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:43:06,840 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:43:06,841 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:43:06,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358883089] [2022-11-25 18:43:06,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:43:06,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:43:06,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:43:06,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:43:06,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:43:06,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:43:06,844 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-25 18:43:06,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 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) [2022-11-25 18:43:06,844 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:43:06,844 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:43:07,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:43:07,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:43:07,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-25 18:43:07,112 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-25 18:43:07,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:43:07,113 INFO L85 PathProgramCache]: Analyzing trace with hash -195644385, now seen corresponding path program 1 times [2022-11-25 18:43:07,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:43:07,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254570943] [2022-11-25 18:43:07,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:43:07,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:43:07,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:43:07,287 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-25 18:43:07,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:43:07,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254570943] [2022-11-25 18:43:07,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254570943] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:43:07,288 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:43:07,288 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 18:43:07,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899955210] [2022-11-25 18:43:07,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:43:07,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 18:43:07,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:43:07,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 18:43:07,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 18:43:07,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:43:07,291 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-25 18:43:07,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.714285714285715) internal successors, (180), 7 states have internal predecessors, (180), 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) [2022-11-25 18:43:07,292 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:43:07,292 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:43:07,292 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:43:07,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:43:07,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:43:07,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 18:43:07,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-25 18:43:07,704 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-25 18:43:07,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:43:07,705 INFO L85 PathProgramCache]: Analyzing trace with hash 431813708, now seen corresponding path program 1 times [2022-11-25 18:43:07,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:43:07,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613872291] [2022-11-25 18:43:07,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:43:07,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:43:07,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:43:08,030 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 30 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 18:43:08,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:43:08,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613872291] [2022-11-25 18:43:08,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613872291] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:43:08,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [671074520] [2022-11-25 18:43:08,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:43:08,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:43:08,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3af7413-8acc-43be-8a0f-0b2c1046b49e/bin/ugemcutter-syNpU3ikLH/z3 [2022-11-25 18:43:08,038 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3af7413-8acc-43be-8a0f-0b2c1046b49e/bin/ugemcutter-syNpU3ikLH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:43:08,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3af7413-8acc-43be-8a0f-0b2c1046b49e/bin/ugemcutter-syNpU3ikLH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-25 18:43:08,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:43:08,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 620 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 18:43:08,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:43:08,489 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 18:43:08,490 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:43:08,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [671074520] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:43:08,490 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 18:43:08,490 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 11 [2022-11-25 18:43:08,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265841903] [2022-11-25 18:43:08,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:43:08,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 18:43:08,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:43:08,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 18:43:08,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-11-25 18:43:08,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:43:08,496 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-25 18:43:08,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.5) internal successors, (198), 4 states have internal predecessors, (198), 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) [2022-11-25 18:43:08,497 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:43:08,497 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:43:08,497 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-11-25 18:43:08,498 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:43:08,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:43:08,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:43:08,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 18:43:08,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:43:08,695 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3af7413-8acc-43be-8a0f-0b2c1046b49e/bin/ugemcutter-syNpU3ikLH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-11-25 18:43:08,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3af7413-8acc-43be-8a0f-0b2c1046b49e/bin/ugemcutter-syNpU3ikLH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-11-25 18:43:08,885 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-25 18:43:08,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:43:08,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1893027568, now seen corresponding path program 1 times [2022-11-25 18:43:08,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:43:08,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418993437] [2022-11-25 18:43:08,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:43:08,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:43:08,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:43:09,059 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 30 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:43:09,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:43:09,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418993437] [2022-11-25 18:43:09,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418993437] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:43:09,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [168800762] [2022-11-25 18:43:09,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:43:09,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:43:09,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3af7413-8acc-43be-8a0f-0b2c1046b49e/bin/ugemcutter-syNpU3ikLH/z3 [2022-11-25 18:43:09,062 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3af7413-8acc-43be-8a0f-0b2c1046b49e/bin/ugemcutter-syNpU3ikLH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:43:09,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3af7413-8acc-43be-8a0f-0b2c1046b49e/bin/ugemcutter-syNpU3ikLH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-25 18:43:09,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:43:09,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 612 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 18:43:09,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:43:09,631 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-25 18:43:09,632 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:43:09,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [168800762] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:43:09,632 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 18:43:09,632 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-11-25 18:43:09,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714499729] [2022-11-25 18:43:09,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:43:09,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 18:43:09,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:43:09,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 18:43:09,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 18:43:09,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:43:09,635 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-25 18:43:09,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.4) internal successors, (192), 5 states have internal predecessors, (192), 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) [2022-11-25 18:43:09,636 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:43:09,636 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:43:09,636 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-11-25 18:43:09,636 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:43:09,636 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:43:09,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:43:09,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:43:09,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 18:43:09,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:43:09,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 18:43:09,853 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3af7413-8acc-43be-8a0f-0b2c1046b49e/bin/ugemcutter-syNpU3ikLH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-25 18:43:10,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3af7413-8acc-43be-8a0f-0b2c1046b49e/bin/ugemcutter-syNpU3ikLH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-11-25 18:43:10,053 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-25 18:43:10,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:43:10,054 INFO L85 PathProgramCache]: Analyzing trace with hash 350416788, now seen corresponding path program 1 times [2022-11-25 18:43:10,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:43:10,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15724315] [2022-11-25 18:43:10,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:43:10,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:43:10,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:43:10,228 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 30 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:43:10,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:43:10,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15724315] [2022-11-25 18:43:10,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15724315] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:43:10,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1128273689] [2022-11-25 18:43:10,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:43:10,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:43:10,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3af7413-8acc-43be-8a0f-0b2c1046b49e/bin/ugemcutter-syNpU3ikLH/z3 [2022-11-25 18:43:10,230 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3af7413-8acc-43be-8a0f-0b2c1046b49e/bin/ugemcutter-syNpU3ikLH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:43:10,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3af7413-8acc-43be-8a0f-0b2c1046b49e/bin/ugemcutter-syNpU3ikLH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-25 18:43:10,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:43:10,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 604 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 18:43:10,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:43:10,801 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:43:10,801 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:43:10,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1128273689] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:43:10,801 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 18:43:10,802 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2022-11-25 18:43:10,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574927202] [2022-11-25 18:43:10,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:43:10,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 18:43:10,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:43:10,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 18:43:10,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 18:43:10,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:43:10,805 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-25 18:43:10,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 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) [2022-11-25 18:43:10,805 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:43:10,805 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:43:10,805 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-11-25 18:43:10,805 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:43:10,806 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2022-11-25 18:43:10,806 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:43:10,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:43:10,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:43:10,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 18:43:10,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:43:10,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 18:43:10,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:43:10,999 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3af7413-8acc-43be-8a0f-0b2c1046b49e/bin/ugemcutter-syNpU3ikLH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-25 18:43:11,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3af7413-8acc-43be-8a0f-0b2c1046b49e/bin/ugemcutter-syNpU3ikLH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-11-25 18:43:11,194 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-25 18:43:11,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:43:11,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1777716477, now seen corresponding path program 1 times [2022-11-25 18:43:11,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:43:11,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309852639] [2022-11-25 18:43:11,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:43:11,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:43:11,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:43:11,425 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 31 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:43:11,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:43:11,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309852639] [2022-11-25 18:43:11,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309852639] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:43:11,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [902953460] [2022-11-25 18:43:11,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:43:11,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:43:11,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3af7413-8acc-43be-8a0f-0b2c1046b49e/bin/ugemcutter-syNpU3ikLH/z3 [2022-11-25 18:43:11,428 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3af7413-8acc-43be-8a0f-0b2c1046b49e/bin/ugemcutter-syNpU3ikLH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:43:11,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3af7413-8acc-43be-8a0f-0b2c1046b49e/bin/ugemcutter-syNpU3ikLH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-25 18:43:11,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:43:11,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 607 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 18:43:11,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:43:12,025 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 31 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:43:12,025 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:43:12,266 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 31 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:43:12,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [902953460] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:43:12,266 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 18:43:12,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-11-25 18:43:12,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301429559] [2022-11-25 18:43:12,267 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 18:43:12,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 18:43:12,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:43:12,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 18:43:12,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-25 18:43:12,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:43:12,270 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-25 18:43:12,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 55.857142857142854) internal successors, (391), 7 states have internal predecessors, (391), 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) [2022-11-25 18:43:12,271 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:43:12,271 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:43:12,271 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-11-25 18:43:12,271 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:43:12,272 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2022-11-25 18:43:12,272 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:43:12,272 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:43:13,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:43:13,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:43:13,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 18:43:13,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:43:13,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 18:43:13,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:43:13,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 18:43:13,439 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3af7413-8acc-43be-8a0f-0b2c1046b49e/bin/ugemcutter-syNpU3ikLH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-25 18:43:13,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3af7413-8acc-43be-8a0f-0b2c1046b49e/bin/ugemcutter-syNpU3ikLH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-11-25 18:43:13,632 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-25 18:43:13,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:43:13,633 INFO L85 PathProgramCache]: Analyzing trace with hash -1585599378, now seen corresponding path program 1 times [2022-11-25 18:43:13,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:43:13,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352433545] [2022-11-25 18:43:13,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:43:13,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:43:13,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:43:14,519 INFO L134 CoverageAnalysis]: Checked inductivity of 2165 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 2123 trivial. 0 not checked. [2022-11-25 18:43:14,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:43:14,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352433545] [2022-11-25 18:43:14,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352433545] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:43:14,520 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:43:14,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 18:43:14,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580198500] [2022-11-25 18:43:14,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:43:14,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 18:43:14,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:43:14,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 18:43:14,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-25 18:43:14,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:43:14,523 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-25 18:43:14,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 38.5) internal successors, (231), 6 states have internal predecessors, (231), 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) [2022-11-25 18:43:14,524 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:43:14,524 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:43:14,524 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-11-25 18:43:14,524 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:43:14,525 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2022-11-25 18:43:14,525 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:43:14,525 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2022-11-25 18:43:14,525 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:43:15,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:43:15,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:43:15,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 18:43:15,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:43:15,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 18:43:15,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:43:15,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 18:43:15,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 18:43:15,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-11-25 18:43:15,304 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-25 18:43:15,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:43:15,305 INFO L85 PathProgramCache]: Analyzing trace with hash 1387946925, now seen corresponding path program 1 times [2022-11-25 18:43:15,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:43:15,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637350746] [2022-11-25 18:43:15,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:43:15,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:43:15,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:43:16,265 INFO L134 CoverageAnalysis]: Checked inductivity of 3852 backedges. 1982 proven. 0 refuted. 0 times theorem prover too weak. 1870 trivial. 0 not checked. [2022-11-25 18:43:16,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:43:16,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637350746] [2022-11-25 18:43:16,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637350746] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:43:16,266 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:43:16,266 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:43:16,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251471307] [2022-11-25 18:43:16,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:43:16,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:43:16,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:43:16,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:43:16,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:43:16,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:43:16,269 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-25 18:43:16,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 131.66666666666666) internal successors, (395), 3 states have internal predecessors, (395), 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) [2022-11-25 18:43:16,270 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:43:16,270 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:43:16,270 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-11-25 18:43:16,270 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:43:16,271 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2022-11-25 18:43:16,271 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:43:16,271 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2022-11-25 18:43:16,271 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2022-11-25 18:43:16,271 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.