./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/lcm1_unwindbound50.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/lcm1_unwindbound50.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6ac61a60e8702da390cdc74b87fa3424e0fd152a4ccfcd2c9fd7af24a4bb7ac5 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:45:58,985 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:45:59,075 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-26 11:45:59,088 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:45:59,089 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:45:59,131 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:45:59,133 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:45:59,133 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:45:59,134 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:45:59,139 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:45:59,140 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:45:59,141 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:45:59,142 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:45:59,143 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:45:59,144 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:45:59,144 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:45:59,145 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 11:45:59,145 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:45:59,146 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:45:59,146 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:45:59,147 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:45:59,147 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 11:45:59,148 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:45:59,148 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 11:45:59,148 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-26 11:45:59,149 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 11:45:59,149 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:45:59,150 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:45:59,150 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:45:59,151 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:45:59,152 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:45:59,153 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:45:59,153 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:45:59,153 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:45:59,153 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:45:59,154 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:45:59,154 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 11:45:59,154 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:45:59,154 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:45:59,155 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:45:59,155 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:45:59,155 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 11:45:59,155 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:45:59,156 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:45:59,156 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6ac61a60e8702da390cdc74b87fa3424e0fd152a4ccfcd2c9fd7af24a4bb7ac5 [2023-11-26 11:45:59,514 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:45:59,552 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:45:59,556 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:45:59,560 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:45:59,560 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:45:59,562 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/nla-digbench-scaling/lcm1_unwindbound50.c [2023-11-26 11:46:02,969 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:46:03,173 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:46:03,174 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/sv-benchmarks/c/nla-digbench-scaling/lcm1_unwindbound50.c [2023-11-26 11:46:03,182 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/data/d595b1c4f/bded052669ea4d6ba6fa4fe5058d2841/FLAG95d1a4e25 [2023-11-26 11:46:03,200 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/data/d595b1c4f/bded052669ea4d6ba6fa4fe5058d2841 [2023-11-26 11:46:03,209 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:46:03,212 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:46:03,217 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:46:03,217 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:46:03,222 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:46:03,223 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:46:03" (1/1) ... [2023-11-26 11:46:03,224 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@597d0efd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:03, skipping insertion in model container [2023-11-26 11:46:03,225 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:46:03" (1/1) ... [2023-11-26 11:46:03,254 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:46:03,487 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:46:03,498 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:46:03,520 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:46:03,534 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:46:03,534 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:03 WrapperNode [2023-11-26 11:46:03,535 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:46:03,536 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:46:03,536 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:46:03,536 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:46:03,544 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:03" (1/1) ... [2023-11-26 11:46:03,552 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:03" (1/1) ... [2023-11-26 11:46:03,575 INFO L138 Inliner]: procedures = 14, calls = 24, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 90 [2023-11-26 11:46:03,575 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:46:03,576 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:46:03,576 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:46:03,576 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:46:03,586 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:03" (1/1) ... [2023-11-26 11:46:03,587 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:03" (1/1) ... [2023-11-26 11:46:03,589 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:03" (1/1) ... [2023-11-26 11:46:03,600 INFO L175 MemorySlicer]: Split 9 memory accesses to 2 slices as follows [2, 7]. 78 percent of accesses are in the largest equivalence class. The 9 initializations are split as follows [2, 7]. The 0 writes are split as follows [0, 0]. [2023-11-26 11:46:03,601 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:03" (1/1) ... [2023-11-26 11:46:03,601 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:03" (1/1) ... [2023-11-26 11:46:03,611 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:03" (1/1) ... [2023-11-26 11:46:03,616 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:03" (1/1) ... [2023-11-26 11:46:03,617 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:03" (1/1) ... [2023-11-26 11:46:03,618 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:03" (1/1) ... [2023-11-26 11:46:03,619 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:46:03,620 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:46:03,621 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:46:03,621 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:46:03,622 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:03" (1/1) ... [2023-11-26 11:46:03,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:46:03,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:46:03,664 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:46:03,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:46:03,711 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:46:03,711 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-26 11:46:03,711 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-26 11:46:03,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 11:46:03,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 11:46:03,712 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:46:03,712 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:46:03,712 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-26 11:46:03,713 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-26 11:46:03,797 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:46:03,805 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:46:04,142 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:46:04,168 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:46:04,169 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-26 11:46:04,169 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:46:04 BoogieIcfgContainer [2023-11-26 11:46:04,170 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:46:04,172 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:46:04,173 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:46:04,176 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:46:04,177 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:46:03" (1/3) ... [2023-11-26 11:46:04,178 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4132a969 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:46:04, skipping insertion in model container [2023-11-26 11:46:04,178 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:03" (2/3) ... [2023-11-26 11:46:04,179 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4132a969 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:46:04, skipping insertion in model container [2023-11-26 11:46:04,179 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:46:04" (3/3) ... [2023-11-26 11:46:04,180 INFO L112 eAbstractionObserver]: Analyzing ICFG lcm1_unwindbound50.c [2023-11-26 11:46:04,203 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:46:04,203 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-26 11:46:04,259 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:46:04,267 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@40066bcb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:46:04,267 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-26 11:46:04,272 INFO L276 IsEmpty]: Start isEmpty. Operand has 42 states, 24 states have (on average 1.7083333333333333) internal successors, (41), 30 states have internal predecessors, (41), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-26 11:46:04,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-26 11:46:04,281 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:46:04,281 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:46:04,282 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-26 11:46:04,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:46:04,288 INFO L85 PathProgramCache]: Analyzing trace with hash 529971304, now seen corresponding path program 1 times [2023-11-26 11:46:04,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:46:04,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614297298] [2023-11-26 11:46:04,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:04,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:46:04,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:04,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:46:04,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:04,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-26 11:46:04,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:04,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-26 11:46:04,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:04,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-26 11:46:04,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:04,632 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-26 11:46:04,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:46:04,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614297298] [2023-11-26 11:46:04,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614297298] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:46:04,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:46:04,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:46:04,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070936435] [2023-11-26 11:46:04,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:46:04,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-26 11:46:04,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:46:04,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-26 11:46:04,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 11:46:04,701 INFO L87 Difference]: Start difference. First operand has 42 states, 24 states have (on average 1.7083333333333333) internal successors, (41), 30 states have internal predecessors, (41), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-26 11:46:04,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:46:04,760 INFO L93 Difference]: Finished difference Result 82 states and 124 transitions. [2023-11-26 11:46:04,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-26 11:46:04,764 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 24 [2023-11-26 11:46:04,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:46:04,773 INFO L225 Difference]: With dead ends: 82 [2023-11-26 11:46:04,773 INFO L226 Difference]: Without dead ends: 38 [2023-11-26 11:46:04,779 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 11:46:04,790 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:46:04,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 52 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:46:04,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2023-11-26 11:46:04,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2023-11-26 11:46:04,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 23 states have (on average 1.434782608695652) internal successors, (33), 28 states have internal predecessors, (33), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-26 11:46:04,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 47 transitions. [2023-11-26 11:46:04,834 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 47 transitions. Word has length 24 [2023-11-26 11:46:04,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:46:04,835 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 47 transitions. [2023-11-26 11:46:04,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-26 11:46:04,836 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 47 transitions. [2023-11-26 11:46:04,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-26 11:46:04,838 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:46:04,838 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:46:04,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 11:46:04,839 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-26 11:46:04,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:46:04,840 INFO L85 PathProgramCache]: Analyzing trace with hash 689927656, now seen corresponding path program 1 times [2023-11-26 11:46:04,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:46:04,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858080305] [2023-11-26 11:46:04,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:04,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:46:04,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:04,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:46:04,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:05,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-26 11:46:05,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:05,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-26 11:46:05,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:05,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-26 11:46:05,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:05,101 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-26 11:46:05,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:46:05,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858080305] [2023-11-26 11:46:05,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858080305] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:46:05,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:46:05,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:46:05,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309216322] [2023-11-26 11:46:05,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:46:05,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:46:05,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:46:05,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:46:05,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:46:05,107 INFO L87 Difference]: Start difference. First operand 38 states and 47 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-26 11:46:05,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:46:05,169 INFO L93 Difference]: Finished difference Result 44 states and 53 transitions. [2023-11-26 11:46:05,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:46:05,170 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 24 [2023-11-26 11:46:05,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:46:05,172 INFO L225 Difference]: With dead ends: 44 [2023-11-26 11:46:05,172 INFO L226 Difference]: Without dead ends: 42 [2023-11-26 11:46:05,173 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:46:05,175 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 11 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:46:05,176 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 109 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:46:05,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2023-11-26 11:46:05,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2023-11-26 11:46:05,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 26 states have (on average 1.3846153846153846) internal successors, (36), 31 states have internal predecessors, (36), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-26 11:46:05,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 50 transitions. [2023-11-26 11:46:05,188 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 50 transitions. Word has length 24 [2023-11-26 11:46:05,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:46:05,190 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 50 transitions. [2023-11-26 11:46:05,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-26 11:46:05,190 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 50 transitions. [2023-11-26 11:46:05,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-26 11:46:05,192 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:46:05,192 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:46:05,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 11:46:05,193 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-26 11:46:05,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:46:05,193 INFO L85 PathProgramCache]: Analyzing trace with hash -254797239, now seen corresponding path program 1 times [2023-11-26 11:46:05,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:46:05,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940807355] [2023-11-26 11:46:05,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:05,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:46:05,218 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:46:05,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [782645328] [2023-11-26 11:46:05,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:05,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:46:05,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:46:05,239 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:46:05,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 11:46:05,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:05,333 INFO L262 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 11:46:05,341 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:46:05,527 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-26 11:46:05,527 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:46:05,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:46:05,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940807355] [2023-11-26 11:46:05,533 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:46:05,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [782645328] [2023-11-26 11:46:05,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [782645328] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:46:05,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:46:05,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:46:05,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208213614] [2023-11-26 11:46:05,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:46:05,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:46:05,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:46:05,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:46:05,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:46:05,539 INFO L87 Difference]: Start difference. First operand 41 states and 50 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-26 11:46:05,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:46:05,711 INFO L93 Difference]: Finished difference Result 61 states and 73 transitions. [2023-11-26 11:46:05,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-26 11:46:05,713 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 34 [2023-11-26 11:46:05,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:46:05,714 INFO L225 Difference]: With dead ends: 61 [2023-11-26 11:46:05,715 INFO L226 Difference]: Without dead ends: 60 [2023-11-26 11:46:05,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-11-26 11:46:05,717 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 30 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:46:05,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 134 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:46:05,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2023-11-26 11:46:05,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 54. [2023-11-26 11:46:05,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 36 states have (on average 1.3611111111111112) internal successors, (49), 41 states have internal predecessors, (49), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-26 11:46:05,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 67 transitions. [2023-11-26 11:46:05,736 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 67 transitions. Word has length 34 [2023-11-26 11:46:05,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:46:05,737 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 67 transitions. [2023-11-26 11:46:05,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-26 11:46:05,738 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 67 transitions. [2023-11-26 11:46:05,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-11-26 11:46:05,740 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:46:05,741 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:46:05,752 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-26 11:46:05,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-26 11:46:05,947 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-26 11:46:05,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:46:05,948 INFO L85 PathProgramCache]: Analyzing trace with hash 691220249, now seen corresponding path program 1 times [2023-11-26 11:46:05,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:46:05,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814441260] [2023-11-26 11:46:05,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:05,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:46:05,971 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:46:05,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1426613700] [2023-11-26 11:46:05,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:05,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:46:05,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:46:05,983 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:46:05,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 11:46:06,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:06,079 INFO L262 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 11:46:06,085 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:46:06,228 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-26 11:46:06,228 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:46:06,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:46:06,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814441260] [2023-11-26 11:46:06,229 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:46:06,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1426613700] [2023-11-26 11:46:06,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1426613700] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:46:06,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:46:06,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:46:06,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595990050] [2023-11-26 11:46:06,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:46:06,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:46:06,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:46:06,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:46:06,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:46:06,234 INFO L87 Difference]: Start difference. First operand 54 states and 67 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-26 11:46:06,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:46:06,349 INFO L93 Difference]: Finished difference Result 90 states and 110 transitions. [2023-11-26 11:46:06,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-26 11:46:06,350 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 35 [2023-11-26 11:46:06,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:46:06,353 INFO L225 Difference]: With dead ends: 90 [2023-11-26 11:46:06,353 INFO L226 Difference]: Without dead ends: 62 [2023-11-26 11:46:06,354 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-26 11:46:06,355 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 8 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:46:06,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 140 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:46:06,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2023-11-26 11:46:06,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2023-11-26 11:46:06,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 43 states have (on average 1.302325581395349) internal successors, (56), 48 states have internal predecessors, (56), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-26 11:46:06,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 74 transitions. [2023-11-26 11:46:06,370 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 74 transitions. Word has length 35 [2023-11-26 11:46:06,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:46:06,371 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 74 transitions. [2023-11-26 11:46:06,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-26 11:46:06,372 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 74 transitions. [2023-11-26 11:46:06,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-11-26 11:46:06,373 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:46:06,374 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:46:06,386 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-26 11:46:06,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:46:06,581 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-26 11:46:06,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:46:06,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1149535416, now seen corresponding path program 1 times [2023-11-26 11:46:06,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:46:06,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893242573] [2023-11-26 11:46:06,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:06,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:46:06,604 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:46:06,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1765452863] [2023-11-26 11:46:06,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:06,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:46:06,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:46:06,609 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:46:06,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 11:46:06,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:06,701 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-26 11:46:06,712 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:46:06,935 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-26 11:46:06,935 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:46:06,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:46:06,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893242573] [2023-11-26 11:46:06,937 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:46:06,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1765452863] [2023-11-26 11:46:06,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1765452863] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:46:06,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:46:06,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 11:46:06,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917851589] [2023-11-26 11:46:06,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:46:06,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 11:46:06,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:46:06,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 11:46:06,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-26 11:46:06,952 INFO L87 Difference]: Start difference. First operand 62 states and 74 transitions. Second operand has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-26 11:46:07,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:46:07,217 INFO L93 Difference]: Finished difference Result 70 states and 82 transitions. [2023-11-26 11:46:07,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-26 11:46:07,218 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 44 [2023-11-26 11:46:07,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:46:07,229 INFO L225 Difference]: With dead ends: 70 [2023-11-26 11:46:07,229 INFO L226 Difference]: Without dead ends: 67 [2023-11-26 11:46:07,230 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2023-11-26 11:46:07,234 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 57 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:46:07,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 124 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:46:07,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2023-11-26 11:46:07,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 63. [2023-11-26 11:46:07,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 46 states have (on average 1.2173913043478262) internal successors, (56), 48 states have internal predecessors, (56), 9 states have call successors, (9), 5 states have call predecessors, (9), 5 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-26 11:46:07,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 74 transitions. [2023-11-26 11:46:07,261 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 74 transitions. Word has length 44 [2023-11-26 11:46:07,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:46:07,262 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 74 transitions. [2023-11-26 11:46:07,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-26 11:46:07,263 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 74 transitions. [2023-11-26 11:46:07,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-26 11:46:07,265 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:46:07,266 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:46:07,275 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-26 11:46:07,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:46:07,476 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-26 11:46:07,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:46:07,477 INFO L85 PathProgramCache]: Analyzing trace with hash 1275859616, now seen corresponding path program 1 times [2023-11-26 11:46:07,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:46:07,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017749096] [2023-11-26 11:46:07,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:07,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:46:07,497 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:46:07,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1489632537] [2023-11-26 11:46:07,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:07,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:46:07,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:46:07,499 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:46:07,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-26 11:46:07,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:07,584 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-26 11:46:07,587 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:46:07,739 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-26 11:46:07,740 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:46:07,904 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-26 11:46:07,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:46:07,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017749096] [2023-11-26 11:46:07,905 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:46:07,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1489632537] [2023-11-26 11:46:07,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1489632537] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-26 11:46:07,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:46:07,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 13 [2023-11-26 11:46:07,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757842048] [2023-11-26 11:46:07,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:46:07,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 11:46:07,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:46:07,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 11:46:07,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2023-11-26 11:46:07,910 INFO L87 Difference]: Start difference. First operand 63 states and 74 transitions. Second operand has 8 states, 7 states have (on average 3.0) internal successors, (21), 8 states have internal predecessors, (21), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-26 11:46:08,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:46:08,106 INFO L93 Difference]: Finished difference Result 77 states and 89 transitions. [2023-11-26 11:46:08,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-26 11:46:08,107 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 8 states have internal predecessors, (21), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 45 [2023-11-26 11:46:08,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:46:08,110 INFO L225 Difference]: With dead ends: 77 [2023-11-26 11:46:08,110 INFO L226 Difference]: Without dead ends: 76 [2023-11-26 11:46:08,111 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2023-11-26 11:46:08,114 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 33 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:46:08,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 162 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:46:08,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2023-11-26 11:46:08,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 72. [2023-11-26 11:46:08,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 53 states have (on average 1.2075471698113207) internal successors, (64), 55 states have internal predecessors, (64), 10 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-26 11:46:08,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 84 transitions. [2023-11-26 11:46:08,142 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 84 transitions. Word has length 45 [2023-11-26 11:46:08,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:46:08,145 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 84 transitions. [2023-11-26 11:46:08,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 8 states have internal predecessors, (21), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-26 11:46:08,145 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 84 transitions. [2023-11-26 11:46:08,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-26 11:46:08,156 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:46:08,157 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:46:08,172 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-26 11:46:08,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:46:08,366 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-26 11:46:08,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:46:08,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1275897352, now seen corresponding path program 1 times [2023-11-26 11:46:08,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:46:08,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47492539] [2023-11-26 11:46:08,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:08,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:46:08,382 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:46:08,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1219931108] [2023-11-26 11:46:08,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:08,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:46:08,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:46:08,384 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:46:08,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-26 11:46:08,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:08,466 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-26 11:46:08,469 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:46:08,615 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-26 11:46:08,615 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:46:08,757 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-26 11:46:08,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:46:08,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47492539] [2023-11-26 11:46:08,758 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:46:08,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1219931108] [2023-11-26 11:46:08,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1219931108] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:46:08,759 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:46:08,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 13 [2023-11-26 11:46:08,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204407271] [2023-11-26 11:46:08,760 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 11:46:08,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-26 11:46:08,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:46:08,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-26 11:46:08,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2023-11-26 11:46:08,764 INFO L87 Difference]: Start difference. First operand 72 states and 84 transitions. Second operand has 14 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 14 states have internal predecessors, (45), 6 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2023-11-26 11:46:08,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:46:08,997 INFO L93 Difference]: Finished difference Result 132 states and 156 transitions. [2023-11-26 11:46:08,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-26 11:46:08,997 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 14 states have internal predecessors, (45), 6 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) Word has length 45 [2023-11-26 11:46:08,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:46:08,999 INFO L225 Difference]: With dead ends: 132 [2023-11-26 11:46:08,999 INFO L226 Difference]: Without dead ends: 103 [2023-11-26 11:46:09,000 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=142, Invalid=364, Unknown=0, NotChecked=0, Total=506 [2023-11-26 11:46:09,001 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 70 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:46:09,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 217 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:46:09,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2023-11-26 11:46:09,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 95. [2023-11-26 11:46:09,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 72 states have (on average 1.1944444444444444) internal successors, (86), 74 states have internal predecessors, (86), 12 states have call successors, (12), 8 states have call predecessors, (12), 8 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-26 11:46:09,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 110 transitions. [2023-11-26 11:46:09,017 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 110 transitions. Word has length 45 [2023-11-26 11:46:09,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:46:09,018 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 110 transitions. [2023-11-26 11:46:09,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 14 states have internal predecessors, (45), 6 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2023-11-26 11:46:09,018 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 110 transitions. [2023-11-26 11:46:09,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-11-26 11:46:09,019 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:46:09,019 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:46:09,036 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-26 11:46:09,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:46:09,227 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-26 11:46:09,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:46:09,227 INFO L85 PathProgramCache]: Analyzing trace with hash 1823196049, now seen corresponding path program 1 times [2023-11-26 11:46:09,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:46:09,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599395522] [2023-11-26 11:46:09,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:09,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:46:09,240 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:46:09,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [861037212] [2023-11-26 11:46:09,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:09,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:46:09,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:46:09,242 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:46:09,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-26 11:46:09,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:09,311 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-26 11:46:09,314 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:46:09,426 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-26 11:46:09,427 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:46:09,583 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-26 11:46:09,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:46:09,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599395522] [2023-11-26 11:46:09,585 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:46:09,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [861037212] [2023-11-26 11:46:09,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [861037212] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-26 11:46:09,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:46:09,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 14 [2023-11-26 11:46:09,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247931980] [2023-11-26 11:46:09,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:46:09,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 11:46:09,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:46:09,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 11:46:09,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2023-11-26 11:46:09,589 INFO L87 Difference]: Start difference. First operand 95 states and 110 transitions. Second operand has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-26 11:46:09,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:46:09,780 INFO L93 Difference]: Finished difference Result 125 states and 146 transitions. [2023-11-26 11:46:09,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-26 11:46:09,781 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 49 [2023-11-26 11:46:09,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:46:09,786 INFO L225 Difference]: With dead ends: 125 [2023-11-26 11:46:09,786 INFO L226 Difference]: Without dead ends: 96 [2023-11-26 11:46:09,787 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2023-11-26 11:46:09,789 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 41 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:46:09,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 153 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:46:09,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2023-11-26 11:46:09,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2023-11-26 11:46:09,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 73 states have (on average 1.1917808219178083) internal successors, (87), 75 states have internal predecessors, (87), 12 states have call successors, (12), 8 states have call predecessors, (12), 8 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-26 11:46:09,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 111 transitions. [2023-11-26 11:46:09,826 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 111 transitions. Word has length 49 [2023-11-26 11:46:09,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:46:09,827 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 111 transitions. [2023-11-26 11:46:09,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-26 11:46:09,827 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 111 transitions. [2023-11-26 11:46:09,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-26 11:46:09,828 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:46:09,828 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:46:09,841 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-26 11:46:10,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:46:10,030 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-26 11:46:10,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:46:10,030 INFO L85 PathProgramCache]: Analyzing trace with hash 922590293, now seen corresponding path program 1 times [2023-11-26 11:46:10,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:46:10,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116539260] [2023-11-26 11:46:10,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:10,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:46:10,045 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:46:10,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [269705368] [2023-11-26 11:46:10,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:10,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:46:10,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:46:10,050 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:46:10,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-26 11:46:10,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:10,130 INFO L262 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 11:46:10,132 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:46:10,256 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-26 11:46:10,256 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:46:10,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:46:10,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116539260] [2023-11-26 11:46:10,256 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:46:10,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [269705368] [2023-11-26 11:46:10,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [269705368] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:46:10,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:46:10,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:46:10,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840269409] [2023-11-26 11:46:10,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:46:10,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:46:10,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:46:10,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:46:10,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:46:10,259 INFO L87 Difference]: Start difference. First operand 96 states and 111 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-26 11:46:10,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:46:10,325 INFO L93 Difference]: Finished difference Result 167 states and 201 transitions. [2023-11-26 11:46:10,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:46:10,326 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 55 [2023-11-26 11:46:10,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:46:10,328 INFO L225 Difference]: With dead ends: 167 [2023-11-26 11:46:10,328 INFO L226 Difference]: Without dead ends: 138 [2023-11-26 11:46:10,329 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:46:10,330 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 28 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:46:10,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 156 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:46:10,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2023-11-26 11:46:10,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 120. [2023-11-26 11:46:10,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 93 states have (on average 1.2365591397849462) internal successors, (115), 95 states have internal predecessors, (115), 16 states have call successors, (16), 8 states have call predecessors, (16), 8 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-26 11:46:10,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 147 transitions. [2023-11-26 11:46:10,349 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 147 transitions. Word has length 55 [2023-11-26 11:46:10,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:46:10,349 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 147 transitions. [2023-11-26 11:46:10,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-26 11:46:10,350 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 147 transitions. [2023-11-26 11:46:10,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-26 11:46:10,354 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:46:10,355 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:46:10,368 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-26 11:46:10,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:46:10,564 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-26 11:46:10,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:46:10,564 INFO L85 PathProgramCache]: Analyzing trace with hash 922691581, now seen corresponding path program 1 times [2023-11-26 11:46:10,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:46:10,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758371644] [2023-11-26 11:46:10,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:10,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:46:10,577 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:46:10,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [555096223] [2023-11-26 11:46:10,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:10,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:46:10,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:46:10,580 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:46:10,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-26 11:46:10,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:10,656 INFO L262 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-26 11:46:10,662 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:46:10,805 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-26 11:46:10,805 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:46:11,013 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-26 11:46:11,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:46:11,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758371644] [2023-11-26 11:46:11,015 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:46:11,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [555096223] [2023-11-26 11:46:11,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [555096223] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:46:11,015 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:46:11,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 17 [2023-11-26 11:46:11,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058581875] [2023-11-26 11:46:11,018 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 11:46:11,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-26 11:46:11,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:46:11,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-26 11:46:11,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2023-11-26 11:46:11,022 INFO L87 Difference]: Start difference. First operand 120 states and 147 transitions. Second operand has 18 states, 17 states have (on average 3.411764705882353) internal successors, (58), 18 states have internal predecessors, (58), 8 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (14), 8 states have call predecessors, (14), 8 states have call successors, (14) [2023-11-26 11:46:11,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:46:11,487 INFO L93 Difference]: Finished difference Result 242 states and 302 transitions. [2023-11-26 11:46:11,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-11-26 11:46:11,488 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.411764705882353) internal successors, (58), 18 states have internal predecessors, (58), 8 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (14), 8 states have call predecessors, (14), 8 states have call successors, (14) Word has length 55 [2023-11-26 11:46:11,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:46:11,492 INFO L225 Difference]: With dead ends: 242 [2023-11-26 11:46:11,492 INFO L226 Difference]: Without dead ends: 189 [2023-11-26 11:46:11,497 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=255, Invalid=935, Unknown=0, NotChecked=0, Total=1190 [2023-11-26 11:46:11,498 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 98 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 11:46:11,500 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 258 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 11:46:11,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2023-11-26 11:46:11,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 175. [2023-11-26 11:46:11,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 137 states have (on average 1.2043795620437956) internal successors, (165), 139 states have internal predecessors, (165), 22 states have call successors, (22), 13 states have call predecessors, (22), 13 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-11-26 11:46:11,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 209 transitions. [2023-11-26 11:46:11,536 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 209 transitions. Word has length 55 [2023-11-26 11:46:11,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:46:11,538 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 209 transitions. [2023-11-26 11:46:11,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.411764705882353) internal successors, (58), 18 states have internal predecessors, (58), 8 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (14), 8 states have call predecessors, (14), 8 states have call successors, (14) [2023-11-26 11:46:11,539 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 209 transitions. [2023-11-26 11:46:11,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-11-26 11:46:11,542 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:46:11,543 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:46:11,557 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-26 11:46:11,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-26 11:46:11,750 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-26 11:46:11,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:46:11,751 INFO L85 PathProgramCache]: Analyzing trace with hash 647425088, now seen corresponding path program 1 times [2023-11-26 11:46:11,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:46:11,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439494920] [2023-11-26 11:46:11,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:11,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:46:11,768 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:46:11,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [49216408] [2023-11-26 11:46:11,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:11,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:46:11,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:46:11,774 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:46:11,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-26 11:46:11,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:11,849 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-26 11:46:11,851 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:46:12,010 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 18 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-26 11:46:12,010 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:46:12,180 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-26 11:46:12,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:46:12,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439494920] [2023-11-26 11:46:12,181 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:46:12,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [49216408] [2023-11-26 11:46:12,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [49216408] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:46:12,181 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:46:12,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2023-11-26 11:46:12,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897129997] [2023-11-26 11:46:12,182 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 11:46:12,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-26 11:46:12,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:46:12,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-26 11:46:12,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2023-11-26 11:46:12,184 INFO L87 Difference]: Start difference. First operand 175 states and 209 transitions. Second operand has 18 states, 18 states have (on average 3.5) internal successors, (63), 18 states have internal predecessors, (63), 8 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (14), 8 states have call predecessors, (14), 8 states have call successors, (14) [2023-11-26 11:46:12,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:46:12,605 INFO L93 Difference]: Finished difference Result 296 states and 364 transitions. [2023-11-26 11:46:12,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-11-26 11:46:12,606 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.5) internal successors, (63), 18 states have internal predecessors, (63), 8 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (14), 8 states have call predecessors, (14), 8 states have call successors, (14) Word has length 59 [2023-11-26 11:46:12,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:46:12,611 INFO L225 Difference]: With dead ends: 296 [2023-11-26 11:46:12,611 INFO L226 Difference]: Without dead ends: 243 [2023-11-26 11:46:12,613 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=282, Invalid=1050, Unknown=0, NotChecked=0, Total=1332 [2023-11-26 11:46:12,614 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 77 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 11:46:12,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 295 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 11:46:12,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2023-11-26 11:46:12,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 230. [2023-11-26 11:46:12,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 182 states have (on average 1.1703296703296704) internal successors, (213), 184 states have internal predecessors, (213), 27 states have call successors, (27), 18 states have call predecessors, (27), 18 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-11-26 11:46:12,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 267 transitions. [2023-11-26 11:46:12,650 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 267 transitions. Word has length 59 [2023-11-26 11:46:12,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:46:12,651 INFO L495 AbstractCegarLoop]: Abstraction has 230 states and 267 transitions. [2023-11-26 11:46:12,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.5) internal successors, (63), 18 states have internal predecessors, (63), 8 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (14), 8 states have call predecessors, (14), 8 states have call successors, (14) [2023-11-26 11:46:12,651 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 267 transitions. [2023-11-26 11:46:12,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-26 11:46:12,654 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:46:12,654 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:46:12,667 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-26 11:46:12,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-26 11:46:12,861 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-26 11:46:12,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:46:12,862 INFO L85 PathProgramCache]: Analyzing trace with hash -1119170293, now seen corresponding path program 1 times [2023-11-26 11:46:12,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:46:12,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44460869] [2023-11-26 11:46:12,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:12,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:46:12,876 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:46:12,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [685753586] [2023-11-26 11:46:12,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:12,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:46:12,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:46:12,879 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:46:12,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-26 11:46:12,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:12,963 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-26 11:46:12,968 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:46:13,179 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 3 proven. 38 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-26 11:46:13,179 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:46:13,420 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 3 proven. 14 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-11-26 11:46:13,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:46:13,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44460869] [2023-11-26 11:46:13,421 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:46:13,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [685753586] [2023-11-26 11:46:13,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [685753586] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:46:13,422 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:46:13,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 22 [2023-11-26 11:46:13,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269705006] [2023-11-26 11:46:13,423 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 11:46:13,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-26 11:46:13,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:46:13,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-26 11:46:13,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=359, Unknown=0, NotChecked=0, Total=462 [2023-11-26 11:46:13,428 INFO L87 Difference]: Start difference. First operand 230 states and 267 transitions. Second operand has 22 states, 22 states have (on average 3.4545454545454546) internal successors, (76), 22 states have internal predecessors, (76), 10 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 10 states have call predecessors, (16), 10 states have call successors, (16) [2023-11-26 11:46:14,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:46:14,070 INFO L93 Difference]: Finished difference Result 366 states and 435 transitions. [2023-11-26 11:46:14,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-11-26 11:46:14,072 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.4545454545454546) internal successors, (76), 22 states have internal predecessors, (76), 10 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 10 states have call predecessors, (16), 10 states have call successors, (16) Word has length 69 [2023-11-26 11:46:14,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:46:14,074 INFO L225 Difference]: With dead ends: 366 [2023-11-26 11:46:14,075 INFO L226 Difference]: Without dead ends: 300 [2023-11-26 11:46:14,078 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 362 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=410, Invalid=1482, Unknown=0, NotChecked=0, Total=1892 [2023-11-26 11:46:14,079 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 135 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 11:46:14,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 336 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 11:46:14,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2023-11-26 11:46:14,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 276. [2023-11-26 11:46:14,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 218 states have (on average 1.1422018348623852) internal successors, (249), 221 states have internal predecessors, (249), 32 states have call successors, (32), 23 states have call predecessors, (32), 23 states have return successors, (32), 31 states have call predecessors, (32), 32 states have call successors, (32) [2023-11-26 11:46:14,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 313 transitions. [2023-11-26 11:46:14,116 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 313 transitions. Word has length 69 [2023-11-26 11:46:14,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:46:14,117 INFO L495 AbstractCegarLoop]: Abstraction has 276 states and 313 transitions. [2023-11-26 11:46:14,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.4545454545454546) internal successors, (76), 22 states have internal predecessors, (76), 10 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 10 states have call predecessors, (16), 10 states have call successors, (16) [2023-11-26 11:46:14,117 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 313 transitions. [2023-11-26 11:46:14,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-11-26 11:46:14,119 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:46:14,119 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:46:14,127 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-26 11:46:14,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-26 11:46:14,326 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-26 11:46:14,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:46:14,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1521044513, now seen corresponding path program 1 times [2023-11-26 11:46:14,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:46:14,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116677443] [2023-11-26 11:46:14,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:14,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:46:14,348 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:46:14,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [518731259] [2023-11-26 11:46:14,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:14,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:46:14,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:46:14,350 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:46:14,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-26 11:46:14,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:14,431 INFO L262 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-26 11:46:14,433 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:46:14,613 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-26 11:46:14,613 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:46:14,870 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-11-26 11:46:14,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:46:14,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116677443] [2023-11-26 11:46:14,871 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:46:14,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [518731259] [2023-11-26 11:46:14,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [518731259] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:46:14,871 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:46:14,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 25 [2023-11-26 11:46:14,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367976813] [2023-11-26 11:46:14,871 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 11:46:14,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-26 11:46:14,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:46:14,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-26 11:46:14,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=517, Unknown=0, NotChecked=0, Total=650 [2023-11-26 11:46:14,874 INFO L87 Difference]: Start difference. First operand 276 states and 313 transitions. Second operand has 26 states, 25 states have (on average 3.36) internal successors, (84), 26 states have internal predecessors, (84), 12 states have call successors, (18), 7 states have call predecessors, (18), 7 states have return successors, (18), 12 states have call predecessors, (18), 12 states have call successors, (18) [2023-11-26 11:46:15,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:46:15,545 INFO L93 Difference]: Finished difference Result 399 states and 455 transitions. [2023-11-26 11:46:15,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-11-26 11:46:15,546 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 3.36) internal successors, (84), 26 states have internal predecessors, (84), 12 states have call successors, (18), 7 states have call predecessors, (18), 7 states have return successors, (18), 12 states have call predecessors, (18), 12 states have call successors, (18) Word has length 75 [2023-11-26 11:46:15,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:46:15,551 INFO L225 Difference]: With dead ends: 399 [2023-11-26 11:46:15,551 INFO L226 Difference]: Without dead ends: 396 [2023-11-26 11:46:15,553 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 588 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=542, Invalid=2214, Unknown=0, NotChecked=0, Total=2756 [2023-11-26 11:46:15,554 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 135 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 11:46:15,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 321 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 11:46:15,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2023-11-26 11:46:15,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 367. [2023-11-26 11:46:15,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 293 states have (on average 1.1433447098976108) internal successors, (335), 295 states have internal predecessors, (335), 40 states have call successors, (40), 31 states have call predecessors, (40), 31 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-11-26 11:46:15,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 415 transitions. [2023-11-26 11:46:15,594 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 415 transitions. Word has length 75 [2023-11-26 11:46:15,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:46:15,595 INFO L495 AbstractCegarLoop]: Abstraction has 367 states and 415 transitions. [2023-11-26 11:46:15,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 3.36) internal successors, (84), 26 states have internal predecessors, (84), 12 states have call successors, (18), 7 states have call predecessors, (18), 7 states have return successors, (18), 12 states have call predecessors, (18), 12 states have call successors, (18) [2023-11-26 11:46:15,596 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 415 transitions. [2023-11-26 11:46:15,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-11-26 11:46:15,602 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:46:15,602 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:46:15,615 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-26 11:46:15,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:46:15,810 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-26 11:46:15,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:46:15,810 INFO L85 PathProgramCache]: Analyzing trace with hash -1835593131, now seen corresponding path program 2 times [2023-11-26 11:46:15,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:46:15,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346309132] [2023-11-26 11:46:15,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:15,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:46:15,834 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:46:15,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [891021985] [2023-11-26 11:46:15,834 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 11:46:15,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:46:15,835 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:46:15,836 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:46:15,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-26 11:46:15,926 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-26 11:46:15,926 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 11:46:15,928 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-26 11:46:15,930 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:46:16,169 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 88 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-26 11:46:16,169 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:46:16,449 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-11-26 11:46:16,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:46:16,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346309132] [2023-11-26 11:46:16,450 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:46:16,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [891021985] [2023-11-26 11:46:16,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [891021985] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:46:16,450 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:46:16,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 25 [2023-11-26 11:46:16,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141537034] [2023-11-26 11:46:16,451 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 11:46:16,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-26 11:46:16,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:46:16,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-26 11:46:16,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=489, Unknown=0, NotChecked=0, Total=650 [2023-11-26 11:46:16,454 INFO L87 Difference]: Start difference. First operand 367 states and 415 transitions. Second operand has 26 states, 25 states have (on average 3.36) internal successors, (84), 26 states have internal predecessors, (84), 12 states have call successors, (18), 7 states have call predecessors, (18), 7 states have return successors, (18), 12 states have call predecessors, (18), 12 states have call successors, (18) [2023-11-26 11:46:17,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:46:17,010 INFO L93 Difference]: Finished difference Result 499 states and 580 transitions. [2023-11-26 11:46:17,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-11-26 11:46:17,013 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 3.36) internal successors, (84), 26 states have internal predecessors, (84), 12 states have call successors, (18), 7 states have call predecessors, (18), 7 states have return successors, (18), 12 states have call predecessors, (18), 12 states have call successors, (18) Word has length 75 [2023-11-26 11:46:17,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:46:17,016 INFO L225 Difference]: With dead ends: 499 [2023-11-26 11:46:17,017 INFO L226 Difference]: Without dead ends: 446 [2023-11-26 11:46:17,018 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 395 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=622, Invalid=1540, Unknown=0, NotChecked=0, Total=2162 [2023-11-26 11:46:17,019 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 163 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 11:46:17,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 313 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 11:46:17,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2023-11-26 11:46:17,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 420. [2023-11-26 11:46:17,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 420 states, 336 states have (on average 1.1517857142857142) internal successors, (387), 338 states have internal predecessors, (387), 45 states have call successors, (45), 36 states have call predecessors, (45), 36 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2023-11-26 11:46:17,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 477 transitions. [2023-11-26 11:46:17,074 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 477 transitions. Word has length 75 [2023-11-26 11:46:17,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:46:17,074 INFO L495 AbstractCegarLoop]: Abstraction has 420 states and 477 transitions. [2023-11-26 11:46:17,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 3.36) internal successors, (84), 26 states have internal predecessors, (84), 12 states have call successors, (18), 7 states have call predecessors, (18), 7 states have return successors, (18), 12 states have call predecessors, (18), 12 states have call successors, (18) [2023-11-26 11:46:17,075 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 477 transitions. [2023-11-26 11:46:17,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-11-26 11:46:17,076 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:46:17,077 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:46:17,087 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-26 11:46:17,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:46:17,283 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-26 11:46:17,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:46:17,283 INFO L85 PathProgramCache]: Analyzing trace with hash 311378950, now seen corresponding path program 1 times [2023-11-26 11:46:17,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:46:17,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347869252] [2023-11-26 11:46:17,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:17,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:46:17,303 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:46:17,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [238331080] [2023-11-26 11:46:17,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:17,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:46:17,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:46:17,305 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:46:17,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-26 11:46:17,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:17,383 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 11:46:17,386 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:46:17,434 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2023-11-26 11:46:17,434 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:46:17,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:46:17,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347869252] [2023-11-26 11:46:17,435 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:46:17,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [238331080] [2023-11-26 11:46:17,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [238331080] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:46:17,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:46:17,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:46:17,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138689775] [2023-11-26 11:46:17,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:46:17,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:46:17,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:46:17,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:46:17,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:46:17,438 INFO L87 Difference]: Start difference. First operand 420 states and 477 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-26 11:46:17,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:46:17,500 INFO L93 Difference]: Finished difference Result 542 states and 631 transitions. [2023-11-26 11:46:17,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:46:17,501 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 85 [2023-11-26 11:46:17,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:46:17,504 INFO L225 Difference]: With dead ends: 542 [2023-11-26 11:46:17,504 INFO L226 Difference]: Without dead ends: 424 [2023-11-26 11:46:17,507 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:46:17,508 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 15 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:46:17,509 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 116 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:46:17,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2023-11-26 11:46:17,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 416. [2023-11-26 11:46:17,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 336 states have (on average 1.1636904761904763) internal successors, (391), 338 states have internal predecessors, (391), 44 states have call successors, (44), 33 states have call predecessors, (44), 33 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2023-11-26 11:46:17,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 479 transitions. [2023-11-26 11:46:17,552 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 479 transitions. Word has length 85 [2023-11-26 11:46:17,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:46:17,552 INFO L495 AbstractCegarLoop]: Abstraction has 416 states and 479 transitions. [2023-11-26 11:46:17,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-26 11:46:17,553 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 479 transitions. [2023-11-26 11:46:17,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-11-26 11:46:17,554 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:46:17,555 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:46:17,566 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-26 11:46:17,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-26 11:46:17,761 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-26 11:46:17,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:46:17,761 INFO L85 PathProgramCache]: Analyzing trace with hash 232682424, now seen corresponding path program 1 times [2023-11-26 11:46:17,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:46:17,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102570407] [2023-11-26 11:46:17,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:17,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:46:17,773 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:46:17,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2099738191] [2023-11-26 11:46:17,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:17,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:46:17,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:46:17,775 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:46:17,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-26 11:46:17,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:17,856 INFO L262 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-26 11:46:17,859 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:46:18,098 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-26 11:46:18,098 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:46:18,515 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-11-26 11:46:18,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:46:18,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102570407] [2023-11-26 11:46:18,516 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:46:18,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2099738191] [2023-11-26 11:46:18,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2099738191] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:46:18,517 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:46:18,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 29 [2023-11-26 11:46:18,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434948510] [2023-11-26 11:46:18,517 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 11:46:18,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-11-26 11:46:18,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:46:18,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-11-26 11:46:18,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=691, Unknown=0, NotChecked=0, Total=870 [2023-11-26 11:46:18,521 INFO L87 Difference]: Start difference. First operand 416 states and 479 transitions. Second operand has 30 states, 29 states have (on average 3.3448275862068964) internal successors, (97), 30 states have internal predecessors, (97), 14 states have call successors, (20), 8 states have call predecessors, (20), 8 states have return successors, (20), 14 states have call predecessors, (20), 14 states have call successors, (20) [2023-11-26 11:46:19,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:46:19,514 INFO L93 Difference]: Finished difference Result 657 states and 783 transitions. [2023-11-26 11:46:19,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2023-11-26 11:46:19,515 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 3.3448275862068964) internal successors, (97), 30 states have internal predecessors, (97), 14 states have call successors, (20), 8 states have call predecessors, (20), 8 states have return successors, (20), 14 states have call predecessors, (20), 14 states have call successors, (20) Word has length 85 [2023-11-26 11:46:19,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:46:19,519 INFO L225 Difference]: With dead ends: 657 [2023-11-26 11:46:19,520 INFO L226 Difference]: Without dead ends: 582 [2023-11-26 11:46:19,523 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 922 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=822, Invalid=3210, Unknown=0, NotChecked=0, Total=4032 [2023-11-26 11:46:19,524 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 186 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 11:46:19,524 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 320 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 11:46:19,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2023-11-26 11:46:19,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 537. [2023-11-26 11:46:19,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 433 states have (on average 1.1685912240184757) internal successors, (506), 435 states have internal predecessors, (506), 57 states have call successors, (57), 44 states have call predecessors, (57), 44 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2023-11-26 11:46:19,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 620 transitions. [2023-11-26 11:46:19,581 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 620 transitions. Word has length 85 [2023-11-26 11:46:19,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:46:19,582 INFO L495 AbstractCegarLoop]: Abstraction has 537 states and 620 transitions. [2023-11-26 11:46:19,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 3.3448275862068964) internal successors, (97), 30 states have internal predecessors, (97), 14 states have call successors, (20), 8 states have call predecessors, (20), 8 states have return successors, (20), 14 states have call predecessors, (20), 14 states have call successors, (20) [2023-11-26 11:46:19,582 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 620 transitions. [2023-11-26 11:46:19,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-11-26 11:46:19,584 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:46:19,585 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:46:19,595 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-26 11:46:19,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-26 11:46:19,792 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-26 11:46:19,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:46:19,793 INFO L85 PathProgramCache]: Analyzing trace with hash -881635891, now seen corresponding path program 2 times [2023-11-26 11:46:19,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:46:19,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831666212] [2023-11-26 11:46:19,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:19,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:46:19,819 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:46:19,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [77085403] [2023-11-26 11:46:19,820 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 11:46:19,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:46:19,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:46:19,822 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:46:19,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-26 11:46:19,910 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-26 11:46:19,910 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 11:46:19,912 INFO L262 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-26 11:46:19,915 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:46:20,219 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 3 proven. 120 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-26 11:46:20,219 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:46:20,630 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 3 proven. 60 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-11-26 11:46:20,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:46:20,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831666212] [2023-11-26 11:46:20,631 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:46:20,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [77085403] [2023-11-26 11:46:20,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [77085403] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:46:20,631 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:46:20,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16] total 30 [2023-11-26 11:46:20,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062794447] [2023-11-26 11:46:20,632 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 11:46:20,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-11-26 11:46:20,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:46:20,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-11-26 11:46:20,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=675, Unknown=0, NotChecked=0, Total=870 [2023-11-26 11:46:20,635 INFO L87 Difference]: Start difference. First operand 537 states and 620 transitions. Second operand has 30 states, 30 states have (on average 3.4) internal successors, (102), 30 states have internal predecessors, (102), 14 states have call successors, (20), 8 states have call predecessors, (20), 8 states have return successors, (20), 14 states have call predecessors, (20), 14 states have call successors, (20) [2023-11-26 11:46:21,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:46:21,671 INFO L93 Difference]: Finished difference Result 690 states and 814 transitions. [2023-11-26 11:46:21,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2023-11-26 11:46:21,672 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 3.4) internal successors, (102), 30 states have internal predecessors, (102), 14 states have call successors, (20), 8 states have call predecessors, (20), 8 states have return successors, (20), 14 states have call predecessors, (20), 14 states have call successors, (20) Word has length 89 [2023-11-26 11:46:21,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:46:21,676 INFO L225 Difference]: With dead ends: 690 [2023-11-26 11:46:21,677 INFO L226 Difference]: Without dead ends: 589 [2023-11-26 11:46:21,680 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 929 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=912, Invalid=3248, Unknown=0, NotChecked=0, Total=4160 [2023-11-26 11:46:21,681 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 219 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 11:46:21,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 296 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 11:46:21,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2023-11-26 11:46:21,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 576. [2023-11-26 11:46:21,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 466 states have (on average 1.150214592274678) internal successors, (536), 468 states have internal predecessors, (536), 60 states have call successors, (60), 47 states have call predecessors, (60), 47 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2023-11-26 11:46:21,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 656 transitions. [2023-11-26 11:46:21,732 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 656 transitions. Word has length 89 [2023-11-26 11:46:21,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:46:21,732 INFO L495 AbstractCegarLoop]: Abstraction has 576 states and 656 transitions. [2023-11-26 11:46:21,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 3.4) internal successors, (102), 30 states have internal predecessors, (102), 14 states have call successors, (20), 8 states have call predecessors, (20), 8 states have return successors, (20), 14 states have call predecessors, (20), 14 states have call successors, (20) [2023-11-26 11:46:21,733 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 656 transitions. [2023-11-26 11:46:21,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-11-26 11:46:21,735 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:46:21,735 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:46:21,748 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-26 11:46:21,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-26 11:46:21,948 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-26 11:46:21,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:46:21,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1713654591, now seen corresponding path program 1 times [2023-11-26 11:46:21,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:46:21,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395268336] [2023-11-26 11:46:21,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:21,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:46:21,963 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:46:21,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [899341063] [2023-11-26 11:46:21,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:21,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:46:21,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:46:21,965 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:46:21,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-26 11:46:22,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:22,090 INFO L262 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-26 11:46:22,093 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:46:22,415 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 129 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-26 11:46:22,415 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:46:22,839 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2023-11-26 11:46:22,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:46:22,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395268336] [2023-11-26 11:46:22,839 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:46:22,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [899341063] [2023-11-26 11:46:22,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [899341063] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:46:22,840 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:46:22,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17] total 33 [2023-11-26 11:46:22,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203880992] [2023-11-26 11:46:22,840 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 11:46:22,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-11-26 11:46:22,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:46:22,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-11-26 11:46:22,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=225, Invalid=897, Unknown=0, NotChecked=0, Total=1122 [2023-11-26 11:46:22,844 INFO L87 Difference]: Start difference. First operand 576 states and 656 transitions. Second operand has 34 states, 33 states have (on average 3.3333333333333335) internal successors, (110), 34 states have internal predecessors, (110), 16 states have call successors, (22), 9 states have call predecessors, (22), 9 states have return successors, (22), 16 states have call predecessors, (22), 16 states have call successors, (22) [2023-11-26 11:46:23,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:46:23,965 INFO L93 Difference]: Finished difference Result 900 states and 1062 transitions. [2023-11-26 11:46:23,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2023-11-26 11:46:23,966 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 3.3333333333333335) internal successors, (110), 34 states have internal predecessors, (110), 16 states have call successors, (22), 9 states have call predecessors, (22), 9 states have return successors, (22), 16 states have call predecessors, (22), 16 states have call successors, (22) Word has length 95 [2023-11-26 11:46:23,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:46:23,971 INFO L225 Difference]: With dead ends: 900 [2023-11-26 11:46:23,972 INFO L226 Difference]: Without dead ends: 825 [2023-11-26 11:46:23,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1199 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=988, Invalid=4124, Unknown=0, NotChecked=0, Total=5112 [2023-11-26 11:46:23,976 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 172 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-26 11:46:23,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 446 Invalid, 446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-26 11:46:23,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 825 states. [2023-11-26 11:46:24,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 825 to 664. [2023-11-26 11:46:24,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 664 states, 541 states have (on average 1.1534195933456561) internal successors, (624), 543 states have internal predecessors, (624), 68 states have call successors, (68), 52 states have call predecessors, (68), 52 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) [2023-11-26 11:46:24,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 760 transitions. [2023-11-26 11:46:24,038 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 760 transitions. Word has length 95 [2023-11-26 11:46:24,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:46:24,039 INFO L495 AbstractCegarLoop]: Abstraction has 664 states and 760 transitions. [2023-11-26 11:46:24,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 3.3333333333333335) internal successors, (110), 34 states have internal predecessors, (110), 16 states have call successors, (22), 9 states have call predecessors, (22), 9 states have return successors, (22), 16 states have call predecessors, (22), 16 states have call successors, (22) [2023-11-26 11:46:24,040 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 760 transitions. [2023-11-26 11:46:24,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-11-26 11:46:24,043 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:46:24,047 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:46:24,058 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-26 11:46:24,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-26 11:46:24,253 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-26 11:46:24,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:46:24,254 INFO L85 PathProgramCache]: Analyzing trace with hash -1461261516, now seen corresponding path program 1 times [2023-11-26 11:46:24,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:46:24,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573967843] [2023-11-26 11:46:24,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:24,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:46:24,266 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:46:24,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1892601934] [2023-11-26 11:46:24,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:24,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:46:24,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:46:24,268 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:46:24,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-26 11:46:24,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:24,350 INFO L262 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-26 11:46:24,352 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:46:24,614 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 3 proven. 142 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-26 11:46:24,614 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:46:25,038 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 3 proven. 58 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2023-11-26 11:46:25,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:46:25,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573967843] [2023-11-26 11:46:25,038 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:46:25,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1892601934] [2023-11-26 11:46:25,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1892601934] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:46:25,039 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:46:25,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18] total 34 [2023-11-26 11:46:25,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503321771] [2023-11-26 11:46:25,039 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 11:46:25,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-11-26 11:46:25,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:46:25,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-11-26 11:46:25,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=237, Invalid=885, Unknown=0, NotChecked=0, Total=1122 [2023-11-26 11:46:25,042 INFO L87 Difference]: Start difference. First operand 664 states and 760 transitions. Second operand has 34 states, 34 states have (on average 3.3823529411764706) internal successors, (115), 34 states have internal predecessors, (115), 16 states have call successors, (22), 9 states have call predecessors, (22), 9 states have return successors, (22), 16 states have call predecessors, (22), 16 states have call successors, (22) [2023-11-26 11:46:26,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:46:26,316 INFO L93 Difference]: Finished difference Result 1085 states and 1264 transitions. [2023-11-26 11:46:26,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2023-11-26 11:46:26,317 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.3823529411764706) internal successors, (115), 34 states have internal predecessors, (115), 16 states have call successors, (22), 9 states have call predecessors, (22), 9 states have return successors, (22), 16 states have call predecessors, (22), 16 states have call successors, (22) Word has length 99 [2023-11-26 11:46:26,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:46:26,323 INFO L225 Difference]: With dead ends: 1085 [2023-11-26 11:46:26,323 INFO L226 Difference]: Without dead ends: 890 [2023-11-26 11:46:26,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1192 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1088, Invalid=4024, Unknown=0, NotChecked=0, Total=5112 [2023-11-26 11:46:26,328 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 199 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 433 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-26 11:46:26,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 433 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-26 11:46:26,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 890 states. [2023-11-26 11:46:26,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 890 to 768. [2023-11-26 11:46:26,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 768 states, 618 states have (on average 1.1294498381877023) internal successors, (698), 622 states have internal predecessors, (698), 81 states have call successors, (81), 66 states have call predecessors, (81), 66 states have return successors, (81), 79 states have call predecessors, (81), 81 states have call successors, (81) [2023-11-26 11:46:26,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 768 states to 768 states and 860 transitions. [2023-11-26 11:46:26,399 INFO L78 Accepts]: Start accepts. Automaton has 768 states and 860 transitions. Word has length 99 [2023-11-26 11:46:26,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:46:26,400 INFO L495 AbstractCegarLoop]: Abstraction has 768 states and 860 transitions. [2023-11-26 11:46:26,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.3823529411764706) internal successors, (115), 34 states have internal predecessors, (115), 16 states have call successors, (22), 9 states have call predecessors, (22), 9 states have return successors, (22), 16 states have call predecessors, (22), 16 states have call successors, (22) [2023-11-26 11:46:26,400 INFO L276 IsEmpty]: Start isEmpty. Operand 768 states and 860 transitions. [2023-11-26 11:46:26,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-11-26 11:46:26,403 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:46:26,404 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:46:26,416 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-26 11:46:26,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:46:26,616 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-26 11:46:26,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:46:26,616 INFO L85 PathProgramCache]: Analyzing trace with hash 2034881669, now seen corresponding path program 1 times [2023-11-26 11:46:26,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:46:26,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042872324] [2023-11-26 11:46:26,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:26,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:46:26,639 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:46:26,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [128534422] [2023-11-26 11:46:26,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:26,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:46:26,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:46:26,641 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:46:26,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-26 11:46:26,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:26,721 INFO L262 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-26 11:46:26,724 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:46:27,002 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 14 proven. 126 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-26 11:46:27,002 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:46:27,417 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 14 proven. 42 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2023-11-26 11:46:27,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:46:27,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042872324] [2023-11-26 11:46:27,418 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:46:27,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [128534422] [2023-11-26 11:46:27,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [128534422] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:46:27,418 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:46:27,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18] total 34 [2023-11-26 11:46:27,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431418201] [2023-11-26 11:46:27,419 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 11:46:27,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-11-26 11:46:27,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:46:27,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-11-26 11:46:27,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=225, Invalid=897, Unknown=0, NotChecked=0, Total=1122 [2023-11-26 11:46:27,422 INFO L87 Difference]: Start difference. First operand 768 states and 860 transitions. Second operand has 34 states, 34 states have (on average 3.5) internal successors, (119), 34 states have internal predecessors, (119), 16 states have call successors, (22), 9 states have call predecessors, (22), 9 states have return successors, (22), 16 states have call predecessors, (22), 16 states have call successors, (22) [2023-11-26 11:46:28,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:46:28,540 INFO L93 Difference]: Finished difference Result 1132 states and 1291 transitions. [2023-11-26 11:46:28,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2023-11-26 11:46:28,541 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.5) internal successors, (119), 34 states have internal predecessors, (119), 16 states have call successors, (22), 9 states have call predecessors, (22), 9 states have return successors, (22), 16 states have call predecessors, (22), 16 states have call successors, (22) Word has length 103 [2023-11-26 11:46:28,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:46:28,552 INFO L225 Difference]: With dead ends: 1132 [2023-11-26 11:46:28,552 INFO L226 Difference]: Without dead ends: 1034 [2023-11-26 11:46:28,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1106 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=952, Invalid=3878, Unknown=0, NotChecked=0, Total=4830 [2023-11-26 11:46:28,557 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 207 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 367 SdHoareTripleChecker+Invalid, 355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-26 11:46:28,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 367 Invalid, 355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 339 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-26 11:46:28,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1034 states. [2023-11-26 11:46:28,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1034 to 959. [2023-11-26 11:46:28,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 959 states, 772 states have (on average 1.1204663212435233) internal successors, (865), 776 states have internal predecessors, (865), 100 states have call successors, (100), 84 states have call predecessors, (100), 84 states have return successors, (100), 98 states have call predecessors, (100), 100 states have call successors, (100) [2023-11-26 11:46:28,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 959 states to 959 states and 1065 transitions. [2023-11-26 11:46:28,668 INFO L78 Accepts]: Start accepts. Automaton has 959 states and 1065 transitions. Word has length 103 [2023-11-26 11:46:28,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:46:28,669 INFO L495 AbstractCegarLoop]: Abstraction has 959 states and 1065 transitions. [2023-11-26 11:46:28,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.5) internal successors, (119), 34 states have internal predecessors, (119), 16 states have call successors, (22), 9 states have call predecessors, (22), 9 states have return successors, (22), 16 states have call predecessors, (22), 16 states have call successors, (22) [2023-11-26 11:46:28,670 INFO L276 IsEmpty]: Start isEmpty. Operand 959 states and 1065 transitions. [2023-11-26 11:46:28,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-11-26 11:46:28,673 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:46:28,673 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:46:28,687 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-11-26 11:46:28,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:46:28,880 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-26 11:46:28,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:46:28,881 INFO L85 PathProgramCache]: Analyzing trace with hash 1923141084, now seen corresponding path program 2 times [2023-11-26 11:46:28,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:46:28,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940496622] [2023-11-26 11:46:28,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:28,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:46:28,905 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:46:28,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1987800758] [2023-11-26 11:46:28,906 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 11:46:28,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:46:28,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:46:28,908 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:46:28,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-26 11:46:28,999 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-26 11:46:28,999 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 11:46:29,001 INFO L262 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-26 11:46:29,004 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:46:29,276 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 3 proven. 166 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-26 11:46:29,276 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:46:29,725 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 3 proven. 54 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2023-11-26 11:46:29,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:46:29,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940496622] [2023-11-26 11:46:29,725 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:46:29,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1987800758] [2023-11-26 11:46:29,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1987800758] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:46:29,726 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:46:29,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 35 [2023-11-26 11:46:29,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070677860] [2023-11-26 11:46:29,726 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 11:46:29,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-11-26 11:46:29,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:46:29,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-11-26 11:46:29,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=243, Invalid=1017, Unknown=0, NotChecked=0, Total=1260 [2023-11-26 11:46:29,730 INFO L87 Difference]: Start difference. First operand 959 states and 1065 transitions. Second operand has 36 states, 35 states have (on average 3.3142857142857145) internal successors, (116), 36 states have internal predecessors, (116), 17 states have call successors, (20), 9 states have call predecessors, (20), 9 states have return successors, (20), 17 states have call predecessors, (20), 17 states have call successors, (20) [2023-11-26 11:46:31,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:46:31,047 INFO L93 Difference]: Finished difference Result 1327 states and 1503 transitions. [2023-11-26 11:46:31,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2023-11-26 11:46:31,048 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 3.3142857142857145) internal successors, (116), 36 states have internal predecessors, (116), 17 states have call successors, (20), 9 states have call predecessors, (20), 9 states have return successors, (20), 17 states have call predecessors, (20), 17 states have call successors, (20) Word has length 105 [2023-11-26 11:46:31,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:46:31,056 INFO L225 Difference]: With dead ends: 1327 [2023-11-26 11:46:31,056 INFO L226 Difference]: Without dead ends: 1318 [2023-11-26 11:46:31,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1513 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1224, Invalid=5096, Unknown=0, NotChecked=0, Total=6320 [2023-11-26 11:46:31,061 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 292 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-26 11:46:31,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [292 Valid, 328 Invalid, 411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-26 11:46:31,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1318 states. [2023-11-26 11:46:31,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1318 to 949. [2023-11-26 11:46:31,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 949 states, 761 states have (on average 1.1274638633377136) internal successors, (858), 766 states have internal predecessors, (858), 97 states have call successors, (97), 88 states have call predecessors, (97), 88 states have return successors, (97), 94 states have call predecessors, (97), 97 states have call successors, (97) [2023-11-26 11:46:31,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 949 states to 949 states and 1052 transitions. [2023-11-26 11:46:31,172 INFO L78 Accepts]: Start accepts. Automaton has 949 states and 1052 transitions. Word has length 105 [2023-11-26 11:46:31,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:46:31,173 INFO L495 AbstractCegarLoop]: Abstraction has 949 states and 1052 transitions. [2023-11-26 11:46:31,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 3.3142857142857145) internal successors, (116), 36 states have internal predecessors, (116), 17 states have call successors, (20), 9 states have call predecessors, (20), 9 states have return successors, (20), 17 states have call predecessors, (20), 17 states have call successors, (20) [2023-11-26 11:46:31,174 INFO L276 IsEmpty]: Start isEmpty. Operand 949 states and 1052 transitions. [2023-11-26 11:46:31,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-11-26 11:46:31,178 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:46:31,178 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:46:31,186 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-11-26 11:46:31,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:46:31,386 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-26 11:46:31,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:46:31,386 INFO L85 PathProgramCache]: Analyzing trace with hash 1093118259, now seen corresponding path program 2 times [2023-11-26 11:46:31,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:46:31,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770226437] [2023-11-26 11:46:31,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:31,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:46:31,401 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:46:31,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [625494909] [2023-11-26 11:46:31,402 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 11:46:31,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:46:31,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:46:31,404 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:46:31,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-26 11:46:31,514 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-26 11:46:31,514 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 11:46:31,517 INFO L262 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-26 11:46:31,521 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:46:31,894 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-26 11:46:31,894 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:46:32,459 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2023-11-26 11:46:32,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:46:32,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770226437] [2023-11-26 11:46:32,459 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:46:32,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [625494909] [2023-11-26 11:46:32,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [625494909] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:46:32,460 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:46:32,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 21] total 41 [2023-11-26 11:46:32,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053796446] [2023-11-26 11:46:32,461 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 11:46:32,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-11-26 11:46:32,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:46:32,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-11-26 11:46:32,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=345, Invalid=1377, Unknown=0, NotChecked=0, Total=1722 [2023-11-26 11:46:32,464 INFO L87 Difference]: Start difference. First operand 949 states and 1052 transitions. Second operand has 42 states, 41 states have (on average 3.317073170731707) internal successors, (136), 42 states have internal predecessors, (136), 20 states have call successors, (26), 11 states have call predecessors, (26), 11 states have return successors, (26), 20 states have call predecessors, (26), 20 states have call successors, (26) [2023-11-26 11:46:33,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:46:33,817 INFO L93 Difference]: Finished difference Result 1591 states and 1795 transitions. [2023-11-26 11:46:33,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2023-11-26 11:46:33,820 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 41 states have (on average 3.317073170731707) internal successors, (136), 42 states have internal predecessors, (136), 20 states have call successors, (26), 11 states have call predecessors, (26), 11 states have return successors, (26), 20 states have call predecessors, (26), 20 states have call successors, (26) Word has length 115 [2023-11-26 11:46:33,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:46:33,827 INFO L225 Difference]: With dead ends: 1591 [2023-11-26 11:46:33,827 INFO L226 Difference]: Without dead ends: 1383 [2023-11-26 11:46:33,832 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2164 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1733, Invalid=6823, Unknown=0, NotChecked=0, Total=8556 [2023-11-26 11:46:33,834 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 344 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 11:46:33,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [344 Valid, 274 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 316 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 11:46:33,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1383 states. [2023-11-26 11:46:33,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1383 to 1155. [2023-11-26 11:46:33,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1155 states, 927 states have (on average 1.13915857605178) internal successors, (1056), 931 states have internal predecessors, (1056), 118 states have call successors, (118), 107 states have call predecessors, (118), 107 states have return successors, (118), 116 states have call predecessors, (118), 118 states have call successors, (118) [2023-11-26 11:46:33,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1155 states to 1155 states and 1292 transitions. [2023-11-26 11:46:33,950 INFO L78 Accepts]: Start accepts. Automaton has 1155 states and 1292 transitions. Word has length 115 [2023-11-26 11:46:33,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:46:33,950 INFO L495 AbstractCegarLoop]: Abstraction has 1155 states and 1292 transitions. [2023-11-26 11:46:33,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 41 states have (on average 3.317073170731707) internal successors, (136), 42 states have internal predecessors, (136), 20 states have call successors, (26), 11 states have call predecessors, (26), 11 states have return successors, (26), 20 states have call predecessors, (26), 20 states have call successors, (26) [2023-11-26 11:46:33,951 INFO L276 IsEmpty]: Start isEmpty. Operand 1155 states and 1292 transitions. [2023-11-26 11:46:33,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-11-26 11:46:33,954 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:46:33,954 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 7, 7, 7, 7, 7, 7, 6, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:46:33,961 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-11-26 11:46:34,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:46:34,161 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-26 11:46:34,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:46:34,162 INFO L85 PathProgramCache]: Analyzing trace with hash 733820978, now seen corresponding path program 3 times [2023-11-26 11:46:34,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:46:34,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297051949] [2023-11-26 11:46:34,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:34,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:46:34,175 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:46:34,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [650838260] [2023-11-26 11:46:34,175 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-26 11:46:34,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:46:34,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:46:34,177 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:46:34,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-26 11:46:34,258 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-26 11:46:34,258 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 11:46:34,259 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 11:46:34,262 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:46:34,294 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2023-11-26 11:46:34,294 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:46:34,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:46:34,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297051949] [2023-11-26 11:46:34,295 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:46:34,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [650838260] [2023-11-26 11:46:34,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [650838260] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:46:34,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:46:34,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:46:34,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336636965] [2023-11-26 11:46:34,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:46:34,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:46:34,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:46:34,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:46:34,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:46:34,300 INFO L87 Difference]: Start difference. First operand 1155 states and 1292 transitions. Second operand has 5 states, 4 states have (on average 8.25) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-26 11:46:34,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:46:34,444 INFO L93 Difference]: Finished difference Result 1174 states and 1310 transitions. [2023-11-26 11:46:34,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 11:46:34,445 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 8.25) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 125 [2023-11-26 11:46:34,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:46:34,452 INFO L225 Difference]: With dead ends: 1174 [2023-11-26 11:46:34,452 INFO L226 Difference]: Without dead ends: 1170 [2023-11-26 11:46:34,453 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:46:34,454 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 22 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:46:34,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 113 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:46:34,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1170 states. [2023-11-26 11:46:34,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1170 to 1133. [2023-11-26 11:46:34,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1133 states, 910 states have (on average 1.132967032967033) internal successors, (1031), 915 states have internal predecessors, (1031), 115 states have call successors, (115), 105 states have call predecessors, (115), 105 states have return successors, (115), 112 states have call predecessors, (115), 115 states have call successors, (115) [2023-11-26 11:46:34,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1133 states to 1133 states and 1261 transitions. [2023-11-26 11:46:34,579 INFO L78 Accepts]: Start accepts. Automaton has 1133 states and 1261 transitions. Word has length 125 [2023-11-26 11:46:34,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:46:34,580 INFO L495 AbstractCegarLoop]: Abstraction has 1133 states and 1261 transitions. [2023-11-26 11:46:34,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 8.25) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-26 11:46:34,580 INFO L276 IsEmpty]: Start isEmpty. Operand 1133 states and 1261 transitions. [2023-11-26 11:46:34,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-11-26 11:46:34,585 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:46:34,585 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 7, 7, 7, 6, 6, 6, 6, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:46:34,592 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-11-26 11:46:34,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:46:34,792 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-26 11:46:34,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:46:34,793 INFO L85 PathProgramCache]: Analyzing trace with hash -2057471331, now seen corresponding path program 2 times [2023-11-26 11:46:34,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:46:34,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275011603] [2023-11-26 11:46:34,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:34,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:46:34,808 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:46:34,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1561020322] [2023-11-26 11:46:34,809 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 11:46:34,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:46:34,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:46:34,810 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:46:34,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-26 11:46:34,924 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-26 11:46:34,924 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 11:46:34,927 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-26 11:46:34,931 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:46:35,389 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 3 proven. 312 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-26 11:46:35,389 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:46:36,003 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 3 proven. 132 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2023-11-26 11:46:36,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:46:36,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275011603] [2023-11-26 11:46:36,004 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:46:36,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1561020322] [2023-11-26 11:46:36,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1561020322] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:46:36,004 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:46:36,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 24] total 46 [2023-11-26 11:46:36,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18273268] [2023-11-26 11:46:36,005 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 11:46:36,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-11-26 11:46:36,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:46:36,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-11-26 11:46:36,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=427, Invalid=1643, Unknown=0, NotChecked=0, Total=2070 [2023-11-26 11:46:36,008 INFO L87 Difference]: Start difference. First operand 1133 states and 1261 transitions. Second operand has 46 states, 46 states have (on average 3.347826086956522) internal successors, (154), 46 states have internal predecessors, (154), 22 states have call successors, (28), 12 states have call predecessors, (28), 12 states have return successors, (28), 22 states have call predecessors, (28), 22 states have call successors, (28) [2023-11-26 11:46:37,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:46:37,798 INFO L93 Difference]: Finished difference Result 1791 states and 2019 transitions. [2023-11-26 11:46:37,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2023-11-26 11:46:37,799 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 3.347826086956522) internal successors, (154), 46 states have internal predecessors, (154), 22 states have call successors, (28), 12 states have call predecessors, (28), 12 states have return successors, (28), 22 states have call predecessors, (28), 22 states have call successors, (28) Word has length 129 [2023-11-26 11:46:37,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:46:37,808 INFO L225 Difference]: With dead ends: 1791 [2023-11-26 11:46:37,808 INFO L226 Difference]: Without dead ends: 1583 [2023-11-26 11:46:37,811 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2505 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=2098, Invalid=7802, Unknown=0, NotChecked=0, Total=9900 [2023-11-26 11:46:37,812 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 302 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-26 11:46:37,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [302 Valid, 481 Invalid, 438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 422 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-26 11:46:37,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1583 states. [2023-11-26 11:46:37,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1583 to 1104. [2023-11-26 11:46:37,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1104 states, 886 states have (on average 1.1331828442437923) internal successors, (1004), 890 states have internal predecessors, (1004), 112 states have call successors, (112), 103 states have call predecessors, (112), 103 states have return successors, (112), 110 states have call predecessors, (112), 112 states have call successors, (112) [2023-11-26 11:46:37,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1104 states to 1104 states and 1228 transitions. [2023-11-26 11:46:37,959 INFO L78 Accepts]: Start accepts. Automaton has 1104 states and 1228 transitions. Word has length 129 [2023-11-26 11:46:37,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:46:37,960 INFO L495 AbstractCegarLoop]: Abstraction has 1104 states and 1228 transitions. [2023-11-26 11:46:37,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 3.347826086956522) internal successors, (154), 46 states have internal predecessors, (154), 22 states have call successors, (28), 12 states have call predecessors, (28), 12 states have return successors, (28), 22 states have call predecessors, (28), 22 states have call successors, (28) [2023-11-26 11:46:37,961 INFO L276 IsEmpty]: Start isEmpty. Operand 1104 states and 1228 transitions. [2023-11-26 11:46:37,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-11-26 11:46:37,964 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:46:37,965 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:46:37,980 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-11-26 11:46:38,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-11-26 11:46:38,171 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-26 11:46:38,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:46:38,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1254255791, now seen corresponding path program 3 times [2023-11-26 11:46:38,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:46:38,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641511396] [2023-11-26 11:46:38,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:38,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:46:38,187 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:46:38,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1408983009] [2023-11-26 11:46:38,188 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-26 11:46:38,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:46:38,188 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:46:38,189 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:46:38,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-26 11:46:38,265 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-26 11:46:38,265 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 11:46:38,266 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 11:46:38,269 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:46:38,298 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 447 trivial. 0 not checked. [2023-11-26 11:46:38,298 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:46:38,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:46:38,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641511396] [2023-11-26 11:46:38,299 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:46:38,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1408983009] [2023-11-26 11:46:38,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1408983009] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:46:38,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:46:38,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:46:38,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649576396] [2023-11-26 11:46:38,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:46:38,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:46:38,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:46:38,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:46:38,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:46:38,302 INFO L87 Difference]: Start difference. First operand 1104 states and 1228 transitions. Second operand has 5 states, 4 states have (on average 6.75) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-26 11:46:38,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:46:38,434 INFO L93 Difference]: Finished difference Result 1108 states and 1231 transitions. [2023-11-26 11:46:38,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:46:38,435 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.75) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 135 [2023-11-26 11:46:38,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:46:38,442 INFO L225 Difference]: With dead ends: 1108 [2023-11-26 11:46:38,442 INFO L226 Difference]: Without dead ends: 1107 [2023-11-26 11:46:38,443 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:46:38,445 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 22 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:46:38,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 123 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:46:38,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1107 states. [2023-11-26 11:46:38,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1107 to 1103. [2023-11-26 11:46:38,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1103 states, 886 states have (on average 1.1320541760722347) internal successors, (1003), 889 states have internal predecessors, (1003), 112 states have call successors, (112), 103 states have call predecessors, (112), 103 states have return successors, (112), 110 states have call predecessors, (112), 112 states have call successors, (112) [2023-11-26 11:46:38,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1103 states to 1103 states and 1227 transitions. [2023-11-26 11:46:38,573 INFO L78 Accepts]: Start accepts. Automaton has 1103 states and 1227 transitions. Word has length 135 [2023-11-26 11:46:38,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:46:38,574 INFO L495 AbstractCegarLoop]: Abstraction has 1103 states and 1227 transitions. [2023-11-26 11:46:38,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.75) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-26 11:46:38,575 INFO L276 IsEmpty]: Start isEmpty. Operand 1103 states and 1227 transitions. [2023-11-26 11:46:38,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-11-26 11:46:38,579 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:46:38,579 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 7, 7, 7, 7, 7, 7, 6, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:46:38,585 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-11-26 11:46:38,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-26 11:46:38,785 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-26 11:46:38,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:46:38,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1593670850, now seen corresponding path program 3 times [2023-11-26 11:46:38,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:46:38,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044796843] [2023-11-26 11:46:38,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:38,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:46:38,800 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:46:38,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [487102660] [2023-11-26 11:46:38,800 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-26 11:46:38,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:46:38,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:46:38,802 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:46:38,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-11-26 11:46:38,874 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-26 11:46:38,874 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 11:46:38,875 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 11:46:38,879 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:46:38,927 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 60 proven. 1 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2023-11-26 11:46:38,927 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:46:39,017 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 382 trivial. 0 not checked. [2023-11-26 11:46:39,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:46:39,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044796843] [2023-11-26 11:46:39,018 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:46:39,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487102660] [2023-11-26 11:46:39,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [487102660] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:46:39,018 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:46:39,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-11-26 11:46:39,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596761367] [2023-11-26 11:46:39,019 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 11:46:39,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-26 11:46:39,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:46:39,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-26 11:46:39,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2023-11-26 11:46:39,020 INFO L87 Difference]: Start difference. First operand 1103 states and 1227 transitions. Second operand has 12 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 12 states have internal predecessors, (47), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-26 11:46:39,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:46:39,284 INFO L93 Difference]: Finished difference Result 1132 states and 1258 transitions. [2023-11-26 11:46:39,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-26 11:46:39,288 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 12 states have internal predecessors, (47), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 139 [2023-11-26 11:46:39,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:46:39,293 INFO L225 Difference]: With dead ends: 1132 [2023-11-26 11:46:39,293 INFO L226 Difference]: Without dead ends: 1130 [2023-11-26 11:46:39,294 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2023-11-26 11:46:39,295 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 54 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:46:39,297 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 198 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:46:39,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1130 states. [2023-11-26 11:46:39,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1130 to 792. [2023-11-26 11:46:39,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 792 states, 636 states have (on average 1.130503144654088) internal successors, (719), 641 states have internal predecessors, (719), 81 states have call successors, (81), 73 states have call predecessors, (81), 73 states have return successors, (81), 77 states have call predecessors, (81), 81 states have call successors, (81) [2023-11-26 11:46:39,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 792 states to 792 states and 881 transitions. [2023-11-26 11:46:39,403 INFO L78 Accepts]: Start accepts. Automaton has 792 states and 881 transitions. Word has length 139 [2023-11-26 11:46:39,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:46:39,404 INFO L495 AbstractCegarLoop]: Abstraction has 792 states and 881 transitions. [2023-11-26 11:46:39,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 12 states have internal predecessors, (47), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-26 11:46:39,404 INFO L276 IsEmpty]: Start isEmpty. Operand 792 states and 881 transitions. [2023-11-26 11:46:39,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-11-26 11:46:39,407 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:46:39,408 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:46:39,418 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-11-26 11:46:39,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-26 11:46:39,613 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-26 11:46:39,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:46:39,614 INFO L85 PathProgramCache]: Analyzing trace with hash 359604448, now seen corresponding path program 1 times [2023-11-26 11:46:39,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:46:39,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091240522] [2023-11-26 11:46:39,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:39,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:46:39,625 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:46:39,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [478714828] [2023-11-26 11:46:39,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:39,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:46:39,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:46:39,627 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:46:39,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-11-26 11:46:39,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:39,725 INFO L262 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-26 11:46:39,729 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:46:40,126 INFO L134 CoverageAnalysis]: Checked inductivity of 554 backedges. 0 proven. 530 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-26 11:46:40,127 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:46:40,805 INFO L134 CoverageAnalysis]: Checked inductivity of 554 backedges. 0 proven. 310 refuted. 0 times theorem prover too weak. 244 trivial. 0 not checked. [2023-11-26 11:46:40,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:46:40,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091240522] [2023-11-26 11:46:40,805 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:46:40,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [478714828] [2023-11-26 11:46:40,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [478714828] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:46:40,805 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:46:40,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 26] total 50 [2023-11-26 11:46:40,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142920748] [2023-11-26 11:46:40,806 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 11:46:40,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-11-26 11:46:40,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:46:40,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-11-26 11:46:40,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=605, Invalid=1845, Unknown=0, NotChecked=0, Total=2450 [2023-11-26 11:46:40,813 INFO L87 Difference]: Start difference. First operand 792 states and 881 transitions. Second operand has 50 states, 50 states have (on average 3.34) internal successors, (167), 50 states have internal predecessors, (167), 24 states have call successors, (30), 13 states have call predecessors, (30), 13 states have return successors, (30), 24 states have call predecessors, (30), 24 states have call successors, (30) [2023-11-26 11:46:42,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:46:42,440 INFO L93 Difference]: Finished difference Result 1189 states and 1345 transitions. [2023-11-26 11:46:42,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2023-11-26 11:46:42,441 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 3.34) internal successors, (167), 50 states have internal predecessors, (167), 24 states have call successors, (30), 13 states have call predecessors, (30), 13 states have return successors, (30), 24 states have call predecessors, (30), 24 states have call successors, (30) Word has length 139 [2023-11-26 11:46:42,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:46:42,445 INFO L225 Difference]: With dead ends: 1189 [2023-11-26 11:46:42,445 INFO L226 Difference]: Without dead ends: 965 [2023-11-26 11:46:42,447 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1859 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2662, Invalid=6268, Unknown=0, NotChecked=0, Total=8930 [2023-11-26 11:46:42,448 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 381 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 381 SdHoareTripleChecker+Valid, 515 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-26 11:46:42,448 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [381 Valid, 515 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 341 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-26 11:46:42,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 965 states. [2023-11-26 11:46:42,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 965 to 906. [2023-11-26 11:46:42,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 906 states, 728 states have (on average 1.129120879120879) internal successors, (822), 733 states have internal predecessors, (822), 92 states have call successors, (92), 84 states have call predecessors, (92), 84 states have return successors, (92), 88 states have call predecessors, (92), 92 states have call successors, (92) [2023-11-26 11:46:42,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 906 states to 906 states and 1006 transitions. [2023-11-26 11:46:42,543 INFO L78 Accepts]: Start accepts. Automaton has 906 states and 1006 transitions. Word has length 139 [2023-11-26 11:46:42,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:46:42,543 INFO L495 AbstractCegarLoop]: Abstraction has 906 states and 1006 transitions. [2023-11-26 11:46:42,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 3.34) internal successors, (167), 50 states have internal predecessors, (167), 24 states have call successors, (30), 13 states have call predecessors, (30), 13 states have return successors, (30), 24 states have call predecessors, (30), 24 states have call successors, (30) [2023-11-26 11:46:42,544 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states and 1006 transitions. [2023-11-26 11:46:42,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-11-26 11:46:42,547 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:46:42,547 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 11, 11, 10, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:46:42,559 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-11-26 11:46:42,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-26 11:46:42,754 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-26 11:46:42,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:46:42,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1015821130, now seen corresponding path program 1 times [2023-11-26 11:46:42,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:46:42,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964697987] [2023-11-26 11:46:42,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:42,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:46:42,768 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:46:42,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [825735054] [2023-11-26 11:46:42,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:42,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:46:42,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:46:42,784 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:46:42,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-11-26 11:46:42,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:42,897 INFO L262 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-26 11:46:42,901 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:46:43,372 INFO L134 CoverageAnalysis]: Checked inductivity of 618 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-26 11:46:43,372 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:46:44,146 INFO L134 CoverageAnalysis]: Checked inductivity of 618 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2023-11-26 11:46:44,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:46:44,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964697987] [2023-11-26 11:46:44,147 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:46:44,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [825735054] [2023-11-26 11:46:44,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [825735054] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:46:44,147 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:46:44,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 27] total 53 [2023-11-26 11:46:44,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436607179] [2023-11-26 11:46:44,148 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 11:46:44,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2023-11-26 11:46:44,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:46:44,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2023-11-26 11:46:44,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=663, Invalid=2199, Unknown=0, NotChecked=0, Total=2862 [2023-11-26 11:46:44,150 INFO L87 Difference]: Start difference. First operand 906 states and 1006 transitions. Second operand has 54 states, 53 states have (on average 3.30188679245283) internal successors, (175), 54 states have internal predecessors, (175), 26 states have call successors, (32), 14 states have call predecessors, (32), 14 states have return successors, (32), 26 states have call predecessors, (32), 26 states have call successors, (32) [2023-11-26 11:46:47,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:46:47,392 INFO L93 Difference]: Finished difference Result 1219 states and 1377 transitions. [2023-11-26 11:46:47,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2023-11-26 11:46:47,393 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 53 states have (on average 3.30188679245283) internal successors, (175), 54 states have internal predecessors, (175), 26 states have call successors, (32), 14 states have call predecessors, (32), 14 states have return successors, (32), 26 states have call predecessors, (32), 26 states have call successors, (32) Word has length 145 [2023-11-26 11:46:47,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:46:47,398 INFO L225 Difference]: With dead ends: 1219 [2023-11-26 11:46:47,398 INFO L226 Difference]: Without dead ends: 995 [2023-11-26 11:46:47,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3834 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=3498, Invalid=11754, Unknown=0, NotChecked=0, Total=15252 [2023-11-26 11:46:47,402 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 537 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 398 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 537 SdHoareTripleChecker+Valid, 408 SdHoareTripleChecker+Invalid, 458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-26 11:46:47,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [537 Valid, 408 Invalid, 458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 398 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-26 11:46:47,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 995 states. [2023-11-26 11:46:47,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 995 to 920. [2023-11-26 11:46:47,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 920 states, 738 states have (on average 1.1287262872628727) internal successors, (833), 744 states have internal predecessors, (833), 94 states have call successors, (94), 86 states have call predecessors, (94), 86 states have return successors, (94), 89 states have call predecessors, (94), 94 states have call successors, (94) [2023-11-26 11:46:47,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 920 states to 920 states and 1021 transitions. [2023-11-26 11:46:47,491 INFO L78 Accepts]: Start accepts. Automaton has 920 states and 1021 transitions. Word has length 145 [2023-11-26 11:46:47,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:46:47,492 INFO L495 AbstractCegarLoop]: Abstraction has 920 states and 1021 transitions. [2023-11-26 11:46:47,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 53 states have (on average 3.30188679245283) internal successors, (175), 54 states have internal predecessors, (175), 26 states have call successors, (32), 14 states have call predecessors, (32), 14 states have return successors, (32), 26 states have call predecessors, (32), 26 states have call successors, (32) [2023-11-26 11:46:47,492 INFO L276 IsEmpty]: Start isEmpty. Operand 920 states and 1021 transitions. [2023-11-26 11:46:47,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2023-11-26 11:46:47,496 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:46:47,496 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 10, 10, 10, 9, 9, 9, 8, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:46:47,503 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-11-26 11:46:47,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-26 11:46:47,702 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-26 11:46:47,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:46:47,703 INFO L85 PathProgramCache]: Analyzing trace with hash -531684882, now seen corresponding path program 1 times [2023-11-26 11:46:47,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:46:47,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779972656] [2023-11-26 11:46:47,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:47,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:46:47,713 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:46:47,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1835043644] [2023-11-26 11:46:47,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:47,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:46:47,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:46:47,715 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:46:47,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-11-26 11:46:47,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:47,814 INFO L262 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-26 11:46:47,818 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:46:48,350 INFO L134 CoverageAnalysis]: Checked inductivity of 606 backedges. 6 proven. 576 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-26 11:46:48,350 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:46:49,149 INFO L134 CoverageAnalysis]: Checked inductivity of 606 backedges. 6 proven. 264 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2023-11-26 11:46:49,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:46:49,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779972656] [2023-11-26 11:46:49,149 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:46:49,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1835043644] [2023-11-26 11:46:49,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1835043644] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:46:49,149 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:46:49,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 30] total 58 [2023-11-26 11:46:49,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573465110] [2023-11-26 11:46:49,151 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 11:46:49,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2023-11-26 11:46:49,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:46:49,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2023-11-26 11:46:49,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=693, Invalid=2613, Unknown=0, NotChecked=0, Total=3306 [2023-11-26 11:46:49,154 INFO L87 Difference]: Start difference. First operand 920 states and 1021 transitions. Second operand has 58 states, 58 states have (on average 3.3275862068965516) internal successors, (193), 58 states have internal predecessors, (193), 28 states have call successors, (34), 15 states have call predecessors, (34), 15 states have return successors, (34), 28 states have call predecessors, (34), 28 states have call successors, (34) [2023-11-26 11:46:52,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:46:52,403 INFO L93 Difference]: Finished difference Result 1614 states and 1813 transitions. [2023-11-26 11:46:52,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2023-11-26 11:46:52,403 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 3.3275862068965516) internal successors, (193), 58 states have internal predecessors, (193), 28 states have call successors, (34), 15 states have call predecessors, (34), 15 states have return successors, (34), 28 states have call predecessors, (34), 28 states have call successors, (34) Word has length 159 [2023-11-26 11:46:52,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:46:52,411 INFO L225 Difference]: With dead ends: 1614 [2023-11-26 11:46:52,411 INFO L226 Difference]: Without dead ends: 1390 [2023-11-26 11:46:52,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 260 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3857 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=3316, Invalid=11936, Unknown=0, NotChecked=0, Total=15252 [2023-11-26 11:46:52,417 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 487 mSDsluCounter, 512 mSDsCounter, 0 mSdLazyCounter, 487 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 487 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-26 11:46:52,417 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [487 Valid, 543 Invalid, 509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 487 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-26 11:46:52,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1390 states. [2023-11-26 11:46:52,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1390 to 1178. [2023-11-26 11:46:52,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1178 states, 944 states have (on average 1.1271186440677967) internal successors, (1064), 948 states have internal predecessors, (1064), 120 states have call successors, (120), 112 states have call predecessors, (120), 112 states have return successors, (120), 117 states have call predecessors, (120), 120 states have call successors, (120) [2023-11-26 11:46:52,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1178 states to 1178 states and 1304 transitions. [2023-11-26 11:46:52,550 INFO L78 Accepts]: Start accepts. Automaton has 1178 states and 1304 transitions. Word has length 159 [2023-11-26 11:46:52,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:46:52,551 INFO L495 AbstractCegarLoop]: Abstraction has 1178 states and 1304 transitions. [2023-11-26 11:46:52,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 3.3275862068965516) internal successors, (193), 58 states have internal predecessors, (193), 28 states have call successors, (34), 15 states have call predecessors, (34), 15 states have return successors, (34), 28 states have call predecessors, (34), 28 states have call successors, (34) [2023-11-26 11:46:52,551 INFO L276 IsEmpty]: Start isEmpty. Operand 1178 states and 1304 transitions. [2023-11-26 11:46:52,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2023-11-26 11:46:52,554 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:46:52,555 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 12, 12, 11, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:46:52,566 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2023-11-26 11:46:52,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-11-26 11:46:52,761 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-26 11:46:52,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:46:52,762 INFO L85 PathProgramCache]: Analyzing trace with hash 1103906774, now seen corresponding path program 3 times [2023-11-26 11:46:52,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:46:52,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158446178] [2023-11-26 11:46:52,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:52,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:46:52,776 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:46:52,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1339384865] [2023-11-26 11:46:52,776 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-26 11:46:52,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:46:52,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:46:52,778 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:46:52,800 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-11-26 11:46:52,870 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-26 11:46:52,870 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 11:46:52,872 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 11:46:52,875 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:46:52,941 INFO L134 CoverageAnalysis]: Checked inductivity of 735 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 651 trivial. 0 not checked. [2023-11-26 11:46:52,941 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:46:52,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:46:52,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158446178] [2023-11-26 11:46:52,941 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:46:52,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1339384865] [2023-11-26 11:46:52,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1339384865] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:46:52,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:46:52,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 11:46:52,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046533384] [2023-11-26 11:46:52,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:46:52,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 11:46:52,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:46:52,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 11:46:52,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:46:52,944 INFO L87 Difference]: Start difference. First operand 1178 states and 1304 transitions. Second operand has 7 states, 6 states have (on average 5.166666666666667) internal successors, (31), 7 states have internal predecessors, (31), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-26 11:46:53,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:46:53,431 INFO L93 Difference]: Finished difference Result 1214 states and 1337 transitions. [2023-11-26 11:46:53,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-26 11:46:53,432 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.166666666666667) internal successors, (31), 7 states have internal predecessors, (31), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 159 [2023-11-26 11:46:53,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:46:53,436 INFO L225 Difference]: With dead ends: 1214 [2023-11-26 11:46:53,437 INFO L226 Difference]: Without dead ends: 1212 [2023-11-26 11:46:53,437 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2023-11-26 11:46:53,438 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 34 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-26 11:46:53,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 144 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-26 11:46:53,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1212 states. [2023-11-26 11:46:53,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1212 to 879. [2023-11-26 11:46:53,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 879 states, 703 states have (on average 1.1209103840682788) internal successors, (788), 708 states have internal predecessors, (788), 90 states have call successors, (90), 84 states have call predecessors, (90), 84 states have return successors, (90), 86 states have call predecessors, (90), 90 states have call successors, (90) [2023-11-26 11:46:53,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 879 states to 879 states and 968 transitions. [2023-11-26 11:46:53,552 INFO L78 Accepts]: Start accepts. Automaton has 879 states and 968 transitions. Word has length 159 [2023-11-26 11:46:53,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:46:53,552 INFO L495 AbstractCegarLoop]: Abstraction has 879 states and 968 transitions. [2023-11-26 11:46:53,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.166666666666667) internal successors, (31), 7 states have internal predecessors, (31), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-26 11:46:53,553 INFO L276 IsEmpty]: Start isEmpty. Operand 879 states and 968 transitions. [2023-11-26 11:46:53,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-11-26 11:46:53,556 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:46:53,556 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 11, 11, 11, 10, 10, 10, 9, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:46:53,567 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2023-11-26 11:46:53,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:46:53,764 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-26 11:46:53,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:46:53,766 INFO L85 PathProgramCache]: Analyzing trace with hash -1121204166, now seen corresponding path program 2 times [2023-11-26 11:46:53,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:46:53,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45281383] [2023-11-26 11:46:53,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:53,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:46:53,786 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:46:53,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1856189819] [2023-11-26 11:46:53,786 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 11:46:53,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:46:53,787 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:46:53,788 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:46:53,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d63e99-421f-4816-bde8-f9d53dc20778/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-11-26 11:46:53,905 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-26 11:46:53,905 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 11:46:53,908 INFO L262 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 35 conjunts are in the unsatisfiable core [2023-11-26 11:46:53,912 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:46:54,653 INFO L134 CoverageAnalysis]: Checked inductivity of 787 backedges. 0 proven. 763 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-26 11:46:54,653 INFO L327 TraceCheckSpWp]: Computing backward predicates...