./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff 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_6245f7b5-b968-47a6-9041-d74bfeb86510/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6245f7b5-b968-47a6-9041-d74bfeb86510/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6245f7b5-b968-47a6-9041-d74bfeb86510/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6245f7b5-b968-47a6-9041-d74bfeb86510/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6245f7b5-b968-47a6-9041-d74bfeb86510/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6245f7b5-b968-47a6-9041-d74bfeb86510/bin/uautomizer-verify-uCwYo4JHxu --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 5b724500cddd07446974ec59df8ac86aa980f4ff713324fa73d397377235cbe2 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:57:58,174 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:57:58,284 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6245f7b5-b968-47a6-9041-d74bfeb86510/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-19 07:57:58,296 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:57:58,297 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:57:58,325 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:57:58,332 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:57:58,332 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:57:58,333 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:57:58,334 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:57:58,335 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:57:58,335 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:57:58,338 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:57:58,339 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:57:58,340 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:57:58,340 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:57:58,341 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:57:58,341 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:57:58,342 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:57:58,342 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:57:58,343 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:57:58,348 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:57:58,348 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 07:57:58,349 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:57:58,353 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:57:58,354 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:57:58,354 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:57:58,355 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:57:58,355 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:57:58,355 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:57:58,356 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:57:58,357 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:57:58,358 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:57:58,359 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:57:58,359 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:57:58,360 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:57:58,360 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:57:58,360 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:57:58,360 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:57:58,361 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:57:58,361 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:57:58,362 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_6245f7b5-b968-47a6-9041-d74bfeb86510/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6245f7b5-b968-47a6-9041-d74bfeb86510/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5b724500cddd07446974ec59df8ac86aa980f4ff713324fa73d397377235cbe2 [2023-11-19 07:57:58,645 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:57:58,671 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:57:58,674 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:57:58,675 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:57:58,676 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:57:58,677 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6245f7b5-b968-47a6-9041-d74bfeb86510/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-3.i [2023-11-19 07:58:01,862 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:58:02,356 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:58:02,356 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6245f7b5-b968-47a6-9041-d74bfeb86510/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-3.i [2023-11-19 07:58:02,393 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6245f7b5-b968-47a6-9041-d74bfeb86510/bin/uautomizer-verify-uCwYo4JHxu/data/4ccc77ec8/eb1042f1b29c4d08adc1c716f7e6c4b2/FLAG02a199d61 [2023-11-19 07:58:02,415 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6245f7b5-b968-47a6-9041-d74bfeb86510/bin/uautomizer-verify-uCwYo4JHxu/data/4ccc77ec8/eb1042f1b29c4d08adc1c716f7e6c4b2 [2023-11-19 07:58:02,418 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:58:02,420 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:58:02,424 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:58:02,424 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:58:02,430 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:58:02,434 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:58:02" (1/1) ... [2023-11-19 07:58:02,435 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@436e1c52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:02, skipping insertion in model container [2023-11-19 07:58:02,435 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:58:02" (1/1) ... [2023-11-19 07:58:02,528 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:58:03,261 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:58:03,272 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:58:03,518 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:58:03,591 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:58:03,600 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:58:03,601 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:03 WrapperNode [2023-11-19 07:58:03,601 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:58:03,602 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:58:03,602 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:58:03,633 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:58:03,640 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:03" (1/1) ... [2023-11-19 07:58:03,696 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:03" (1/1) ... [2023-11-19 07:58:03,833 INFO L138 Inliner]: procedures = 177, calls = 489, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 2218 [2023-11-19 07:58:03,835 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:58:03,837 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:58:03,837 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:58:03,837 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:58:03,848 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:03" (1/1) ... [2023-11-19 07:58:03,848 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:03" (1/1) ... [2023-11-19 07:58:03,877 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:03" (1/1) ... [2023-11-19 07:58:03,877 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:03" (1/1) ... [2023-11-19 07:58:03,983 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:03" (1/1) ... [2023-11-19 07:58:04,020 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:03" (1/1) ... [2023-11-19 07:58:04,028 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:03" (1/1) ... [2023-11-19 07:58:04,038 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:03" (1/1) ... [2023-11-19 07:58:04,059 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:58:04,060 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:58:04,060 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:58:04,060 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:58:04,061 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:03" (1/1) ... [2023-11-19 07:58:04,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:58:04,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6245f7b5-b968-47a6-9041-d74bfeb86510/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:58:04,096 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6245f7b5-b968-47a6-9041-d74bfeb86510/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:58:04,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6245f7b5-b968-47a6-9041-d74bfeb86510/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:58:04,139 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-11-19 07:58:04,140 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-11-19 07:58:04,140 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:58:04,140 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-19 07:58:04,140 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-19 07:58:04,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:58:04,141 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-19 07:58:04,141 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-19 07:58:04,141 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 07:58:04,141 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:58:04,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 07:58:04,142 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:58:04,142 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-19 07:58:04,144 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 07:58:04,144 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:58:04,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:58:04,145 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:58:04,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:58:04,456 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:58:04,458 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:58:07,141 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:58:07,158 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:58:07,158 INFO L302 CfgBuilder]: Removed 100 assume(true) statements. [2023-11-19 07:58:07,166 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:58:07 BoogieIcfgContainer [2023-11-19 07:58:07,167 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:58:07,169 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:58:07,170 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:58:07,173 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:58:07,173 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:58:02" (1/3) ... [2023-11-19 07:58:07,174 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ec33c71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:58:07, skipping insertion in model container [2023-11-19 07:58:07,175 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:03" (2/3) ... [2023-11-19 07:58:07,175 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ec33c71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:58:07, skipping insertion in model container [2023-11-19 07:58:07,175 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:58:07" (3/3) ... [2023-11-19 07:58:07,177 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_BER_test5-3.i [2023-11-19 07:58:07,200 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:58:07,201 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-11-19 07:58:07,279 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:58:07,287 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;@39fa05ba, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:58:07,287 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2023-11-19 07:58:07,295 INFO L276 IsEmpty]: Start isEmpty. Operand has 586 states, 559 states have (on average 1.704830053667263) internal successors, (953), 576 states have internal predecessors, (953), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 9 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-19 07:58:07,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-19 07:58:07,302 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:58:07,303 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 07:58:07,303 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-11-19 07:58:07,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:07,309 INFO L85 PathProgramCache]: Analyzing trace with hash 1377095142, now seen corresponding path program 1 times [2023-11-19 07:58:07,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:07,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510499959] [2023-11-19 07:58:07,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:07,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:07,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:07,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:58:07,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:58:07,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510499959] [2023-11-19 07:58:07,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510499959] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:07,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:58:07,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:58:07,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345745771] [2023-11-19 07:58:07,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:07,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:58:07,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:58:07,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:58:07,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:58:07,556 INFO L87 Difference]: Start difference. First operand has 586 states, 559 states have (on average 1.704830053667263) internal successors, (953), 576 states have internal predecessors, (953), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 9 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:07,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:58:07,667 INFO L93 Difference]: Finished difference Result 1166 states and 1960 transitions. [2023-11-19 07:58:07,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:58:07,669 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-19 07:58:07,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:58:07,685 INFO L225 Difference]: With dead ends: 1166 [2023-11-19 07:58:07,686 INFO L226 Difference]: Without dead ends: 515 [2023-11-19 07:58:07,692 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:58:07,696 INFO L413 NwaCegarLoop]: 865 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 865 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:58:07,697 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 865 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:58:07,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2023-11-19 07:58:07,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 515. [2023-11-19 07:58:07,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 515 states, 494 states have (on average 1.5222672064777327) internal successors, (752), 506 states have internal predecessors, (752), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-19 07:58:07,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 774 transitions. [2023-11-19 07:58:07,807 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 774 transitions. Word has length 6 [2023-11-19 07:58:07,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:58:07,808 INFO L495 AbstractCegarLoop]: Abstraction has 515 states and 774 transitions. [2023-11-19 07:58:07,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:07,808 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 774 transitions. [2023-11-19 07:58:07,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-19 07:58:07,809 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:58:07,809 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:58:07,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:58:07,811 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-11-19 07:58:07,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:07,812 INFO L85 PathProgramCache]: Analyzing trace with hash -1572045411, now seen corresponding path program 1 times [2023-11-19 07:58:07,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:07,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769630335] [2023-11-19 07:58:07,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:07,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:07,846 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:58:07,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [715938600] [2023-11-19 07:58:07,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:07,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:58:07,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6245f7b5-b968-47a6-9041-d74bfeb86510/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:58:07,850 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6245f7b5-b968-47a6-9041-d74bfeb86510/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:58:07,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6245f7b5-b968-47a6-9041-d74bfeb86510/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:58:08,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:08,096 INFO L262 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:58:08,105 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:58:08,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:58:08,155 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:58:08,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:58:08,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769630335] [2023-11-19 07:58:08,157 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:58:08,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [715938600] [2023-11-19 07:58:08,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [715938600] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:08,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:58:08,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:58:08,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599003259] [2023-11-19 07:58:08,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:08,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:58:08,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:58:08,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:58:08,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:58:08,172 INFO L87 Difference]: Start difference. First operand 515 states and 774 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:08,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:58:08,301 INFO L93 Difference]: Finished difference Result 1179 states and 1784 transitions. [2023-11-19 07:58:08,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:58:08,302 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-19 07:58:08,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:58:08,315 INFO L225 Difference]: With dead ends: 1179 [2023-11-19 07:58:08,315 INFO L226 Difference]: Without dead ends: 1017 [2023-11-19 07:58:08,317 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:58:08,319 INFO L413 NwaCegarLoop]: 808 mSDtfsCounter, 738 mSDsluCounter, 756 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 749 SdHoareTripleChecker+Valid, 1564 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:58:08,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [749 Valid, 1564 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:58:08,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1017 states. [2023-11-19 07:58:08,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1017 to 668. [2023-11-19 07:58:08,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 668 states, 642 states have (on average 1.5327102803738317) internal successors, (984), 659 states have internal predecessors, (984), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 8 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-19 07:58:08,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 668 states to 668 states and 1016 transitions. [2023-11-19 07:58:08,365 INFO L78 Accepts]: Start accepts. Automaton has 668 states and 1016 transitions. Word has length 7 [2023-11-19 07:58:08,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:58:08,366 INFO L495 AbstractCegarLoop]: Abstraction has 668 states and 1016 transitions. [2023-11-19 07:58:08,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:08,367 INFO L276 IsEmpty]: Start isEmpty. Operand 668 states and 1016 transitions. [2023-11-19 07:58:08,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-19 07:58:08,367 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:58:08,369 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:58:08,398 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6245f7b5-b968-47a6-9041-d74bfeb86510/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:58:08,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6245f7b5-b968-47a6-9041-d74bfeb86510/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:58:08,593 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-11-19 07:58:08,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:08,594 INFO L85 PathProgramCache]: Analyzing trace with hash -1613794471, now seen corresponding path program 1 times [2023-11-19 07:58:08,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:08,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217840192] [2023-11-19 07:58:08,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:08,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:08,621 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:58:08,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1453029995] [2023-11-19 07:58:08,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:08,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:58:08,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6245f7b5-b968-47a6-9041-d74bfeb86510/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:58:08,623 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6245f7b5-b968-47a6-9041-d74bfeb86510/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:58:08,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6245f7b5-b968-47a6-9041-d74bfeb86510/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:58:08,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:08,874 INFO L262 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:58:08,877 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:58:08,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:58:08,913 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:58:08,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:58:08,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217840192] [2023-11-19 07:58:08,914 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:58:08,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1453029995] [2023-11-19 07:58:08,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1453029995] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:08,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:58:08,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:58:08,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043107712] [2023-11-19 07:58:08,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:08,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:58:08,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:58:08,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:58:08,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:58:08,920 INFO L87 Difference]: Start difference. First operand 668 states and 1016 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:09,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:58:09,005 INFO L93 Difference]: Finished difference Result 1018 states and 1536 transitions. [2023-11-19 07:58:09,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:58:09,006 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-19 07:58:09,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:58:09,015 INFO L225 Difference]: With dead ends: 1018 [2023-11-19 07:58:09,015 INFO L226 Difference]: Without dead ends: 1015 [2023-11-19 07:58:09,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:58:09,020 INFO L413 NwaCegarLoop]: 808 mSDtfsCounter, 731 mSDsluCounter, 756 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 742 SdHoareTripleChecker+Valid, 1564 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:58:09,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [742 Valid, 1564 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:58:09,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1015 states. [2023-11-19 07:58:09,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1015 to 672. [2023-11-19 07:58:09,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 672 states, 646 states have (on average 1.5263157894736843) internal successors, (986), 663 states have internal predecessors, (986), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 8 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-19 07:58:09,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 672 states to 672 states and 1018 transitions. [2023-11-19 07:58:09,059 INFO L78 Accepts]: Start accepts. Automaton has 672 states and 1018 transitions. Word has length 7 [2023-11-19 07:58:09,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:58:09,059 INFO L495 AbstractCegarLoop]: Abstraction has 672 states and 1018 transitions. [2023-11-19 07:58:09,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:09,061 INFO L276 IsEmpty]: Start isEmpty. Operand 672 states and 1018 transitions. [2023-11-19 07:58:09,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-11-19 07:58:09,074 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:58:09,075 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 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, 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, 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, 1] [2023-11-19 07:58:09,102 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6245f7b5-b968-47a6-9041-d74bfeb86510/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:58:09,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6245f7b5-b968-47a6-9041-d74bfeb86510/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:58:09,297 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-11-19 07:58:09,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:09,298 INFO L85 PathProgramCache]: Analyzing trace with hash -271889225, now seen corresponding path program 1 times [2023-11-19 07:58:09,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:09,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330687458] [2023-11-19 07:58:09,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:09,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:09,421 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:58:09,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [63853300] [2023-11-19 07:58:09,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:09,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:58:09,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6245f7b5-b968-47a6-9041-d74bfeb86510/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:58:09,423 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6245f7b5-b968-47a6-9041-d74bfeb86510/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:58:09,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6245f7b5-b968-47a6-9041-d74bfeb86510/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:58:09,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:09,901 INFO L262 TraceCheckSpWp]: Trace formula consists of 746 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:58:09,911 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:58:10,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:58:10,000 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:58:10,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:58:10,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330687458] [2023-11-19 07:58:10,000 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:58:10,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [63853300] [2023-11-19 07:58:10,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [63853300] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:10,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:58:10,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:58:10,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930325705] [2023-11-19 07:58:10,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:10,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:58:10,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:58:10,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:58:10,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:58:10,004 INFO L87 Difference]: Start difference. First operand 672 states and 1018 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:10,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:58:10,137 INFO L93 Difference]: Finished difference Result 1358 states and 2060 transitions. [2023-11-19 07:58:10,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:58:10,138 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2023-11-19 07:58:10,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:58:10,143 INFO L225 Difference]: With dead ends: 1358 [2023-11-19 07:58:10,143 INFO L226 Difference]: Without dead ends: 693 [2023-11-19 07:58:10,145 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:58:10,148 INFO L413 NwaCegarLoop]: 754 mSDtfsCounter, 9 mSDsluCounter, 739 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1493 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:58:10,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1493 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:58:10,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 693 states. [2023-11-19 07:58:10,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 693 to 692. [2023-11-19 07:58:10,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 692 states, 666 states have (on average 1.5105105105105106) internal successors, (1006), 683 states have internal predecessors, (1006), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 8 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-19 07:58:10,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 1038 transitions. [2023-11-19 07:58:10,180 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 1038 transitions. Word has length 151 [2023-11-19 07:58:10,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:58:10,181 INFO L495 AbstractCegarLoop]: Abstraction has 692 states and 1038 transitions. [2023-11-19 07:58:10,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:10,181 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 1038 transitions. [2023-11-19 07:58:10,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-11-19 07:58:10,189 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:58:10,189 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 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, 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, 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, 1] [2023-11-19 07:58:10,217 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6245f7b5-b968-47a6-9041-d74bfeb86510/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:58:10,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6245f7b5-b968-47a6-9041-d74bfeb86510/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:58:10,404 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-11-19 07:58:10,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:10,405 INFO L85 PathProgramCache]: Analyzing trace with hash 162616373, now seen corresponding path program 1 times [2023-11-19 07:58:10,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:10,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940797671] [2023-11-19 07:58:10,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:10,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:10,516 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:58:10,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [53072003] [2023-11-19 07:58:10,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:10,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:58:10,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6245f7b5-b968-47a6-9041-d74bfeb86510/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:58:10,519 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6245f7b5-b968-47a6-9041-d74bfeb86510/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:58:10,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6245f7b5-b968-47a6-9041-d74bfeb86510/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 07:58:11,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:11,061 INFO L262 TraceCheckSpWp]: Trace formula consists of 748 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:58:11,068 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:58:11,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:58:11,087 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:58:11,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:58:11,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940797671] [2023-11-19 07:58:11,087 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:58:11,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [53072003] [2023-11-19 07:58:11,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [53072003] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:11,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:58:11,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:58:11,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445674354] [2023-11-19 07:58:11,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:11,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:58:11,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:58:11,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:58:11,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:58:11,091 INFO L87 Difference]: Start difference. First operand 692 states and 1038 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:11,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:58:11,189 INFO L93 Difference]: Finished difference Result 1398 states and 2100 transitions. [2023-11-19 07:58:11,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:58:11,190 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2023-11-19 07:58:11,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:58:11,196 INFO L225 Difference]: With dead ends: 1398 [2023-11-19 07:58:11,196 INFO L226 Difference]: Without dead ends: 713 [2023-11-19 07:58:11,197 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:58:11,198 INFO L413 NwaCegarLoop]: 754 mSDtfsCounter, 9 mSDsluCounter, 739 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1493 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:58:11,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1493 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:58:11,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2023-11-19 07:58:11,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 712. [2023-11-19 07:58:11,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 712 states, 686 states have (on average 1.4956268221574345) internal successors, (1026), 703 states have internal predecessors, (1026), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 8 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-19 07:58:11,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 712 states to 712 states and 1058 transitions. [2023-11-19 07:58:11,224 INFO L78 Accepts]: Start accepts. Automaton has 712 states and 1058 transitions. Word has length 151 [2023-11-19 07:58:11,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:58:11,225 INFO L495 AbstractCegarLoop]: Abstraction has 712 states and 1058 transitions. [2023-11-19 07:58:11,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:11,226 INFO L276 IsEmpty]: Start isEmpty. Operand 712 states and 1058 transitions. [2023-11-19 07:58:11,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-11-19 07:58:11,228 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:58:11,228 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 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, 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, 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, 1] [2023-11-19 07:58:11,261 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6245f7b5-b968-47a6-9041-d74bfeb86510/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 07:58:11,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6245f7b5-b968-47a6-9041-d74bfeb86510/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:58:11,452 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-11-19 07:58:11,452 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:11,452 INFO L85 PathProgramCache]: Analyzing trace with hash 217009271, now seen corresponding path program 1 times [2023-11-19 07:58:11,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:11,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490207462] [2023-11-19 07:58:11,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:11,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:11,539 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:58:11,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2101952926] [2023-11-19 07:58:11,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:11,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:58:11,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6245f7b5-b968-47a6-9041-d74bfeb86510/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:58:11,541 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6245f7b5-b968-47a6-9041-d74bfeb86510/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:58:11,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6245f7b5-b968-47a6-9041-d74bfeb86510/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 07:58:12,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:12,010 INFO L262 TraceCheckSpWp]: Trace formula consists of 750 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:58:12,039 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:58:12,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:58:12,084 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:58:12,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:58:12,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490207462] [2023-11-19 07:58:12,085 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:58:12,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2101952926] [2023-11-19 07:58:12,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2101952926] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:12,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:58:12,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:58:12,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826963204] [2023-11-19 07:58:12,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:12,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:58:12,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:58:12,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:58:12,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:58:12,089 INFO L87 Difference]: Start difference. First operand 712 states and 1058 transitions. Second operand has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:12,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:58:12,224 INFO L93 Difference]: Finished difference Result 1404 states and 2096 transitions. [2023-11-19 07:58:12,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:58:12,224 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2023-11-19 07:58:12,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:58:12,232 INFO L225 Difference]: With dead ends: 1404 [2023-11-19 07:58:12,232 INFO L226 Difference]: Without dead ends: 699 [2023-11-19 07:58:12,235 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:58:12,238 INFO L413 NwaCegarLoop]: 747 mSDtfsCounter, 165 mSDsluCounter, 1340 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 2087 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:58:12,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 2087 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:58:12,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2023-11-19 07:58:12,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 698. [2023-11-19 07:58:12,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 698 states, 672 states have (on average 1.4955357142857142) internal successors, (1005), 689 states have internal predecessors, (1005), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 8 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-19 07:58:12,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 698 states to 698 states and 1037 transitions. [2023-11-19 07:58:12,269 INFO L78 Accepts]: Start accepts. Automaton has 698 states and 1037 transitions. Word has length 151 [2023-11-19 07:58:12,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:58:12,270 INFO L495 AbstractCegarLoop]: Abstraction has 698 states and 1037 transitions. [2023-11-19 07:58:12,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:12,270 INFO L276 IsEmpty]: Start isEmpty. Operand 698 states and 1037 transitions. [2023-11-19 07:58:12,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-11-19 07:58:12,273 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:58:12,273 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 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, 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, 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, 1] [2023-11-19 07:58:12,302 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6245f7b5-b968-47a6-9041-d74bfeb86510/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 07:58:12,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6245f7b5-b968-47a6-9041-d74bfeb86510/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-19 07:58:12,474 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-11-19 07:58:12,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:12,475 INFO L85 PathProgramCache]: Analyzing trace with hash -1666222715, now seen corresponding path program 1 times [2023-11-19 07:58:12,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:12,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022146700] [2023-11-19 07:58:12,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:12,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:12,573 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:58:12,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1468613442] [2023-11-19 07:58:12,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:12,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:58:12,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6245f7b5-b968-47a6-9041-d74bfeb86510/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:58:12,575 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6245f7b5-b968-47a6-9041-d74bfeb86510/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:58:12,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6245f7b5-b968-47a6-9041-d74bfeb86510/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 07:58:13,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:13,094 INFO L262 TraceCheckSpWp]: Trace formula consists of 736 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:58:13,099 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:58:13,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:58:13,121 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:58:13,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:58:13,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022146700] [2023-11-19 07:58:13,121 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:58:13,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1468613442] [2023-11-19 07:58:13,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1468613442] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:13,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:58:13,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:58:13,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922442513] [2023-11-19 07:58:13,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:13,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:58:13,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:58:13,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:58:13,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:58:13,125 INFO L87 Difference]: Start difference. First operand 698 states and 1037 transitions. Second operand has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:13,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:58:13,229 INFO L93 Difference]: Finished difference Result 1376 states and 2054 transitions. [2023-11-19 07:58:13,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:58:13,232 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2023-11-19 07:58:13,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:58:13,238 INFO L225 Difference]: With dead ends: 1376 [2023-11-19 07:58:13,238 INFO L226 Difference]: Without dead ends: 685 [2023-11-19 07:58:13,240 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:58:13,241 INFO L413 NwaCegarLoop]: 740 mSDtfsCounter, 165 mSDsluCounter, 1326 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 2066 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:58:13,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 2066 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:58:13,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2023-11-19 07:58:13,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 684. [2023-11-19 07:58:13,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 684 states, 658 states have (on average 1.4954407294832828) internal successors, (984), 675 states have internal predecessors, (984), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 8 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-19 07:58:13,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 1016 transitions. [2023-11-19 07:58:13,279 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 1016 transitions. Word has length 151 [2023-11-19 07:58:13,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:58:13,279 INFO L495 AbstractCegarLoop]: Abstraction has 684 states and 1016 transitions. [2023-11-19 07:58:13,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:13,279 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 1016 transitions. [2023-11-19 07:58:13,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-11-19 07:58:13,289 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:58:13,289 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 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, 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, 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, 1] [2023-11-19 07:58:13,312 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6245f7b5-b968-47a6-9041-d74bfeb86510/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 07:58:13,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6245f7b5-b968-47a6-9041-d74bfeb86510/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-19 07:58:13,508 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-11-19 07:58:13,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:13,509 INFO L85 PathProgramCache]: Analyzing trace with hash -143142857, now seen corresponding path program 1 times [2023-11-19 07:58:13,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:13,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74042696] [2023-11-19 07:58:13,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:13,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:13,587 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:58:13,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [179295710] [2023-11-19 07:58:13,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:13,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:58:13,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6245f7b5-b968-47a6-9041-d74bfeb86510/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:58:13,589 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6245f7b5-b968-47a6-9041-d74bfeb86510/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:58:13,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6245f7b5-b968-47a6-9041-d74bfeb86510/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 07:58:14,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:14,140 INFO L262 TraceCheckSpWp]: Trace formula consists of 722 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:58:14,145 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:58:14,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:58:14,394 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:58:14,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:58:14,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74042696] [2023-11-19 07:58:14,394 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:58:14,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [179295710] [2023-11-19 07:58:14,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [179295710] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:14,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:58:14,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:58:14,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10649824] [2023-11-19 07:58:14,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:14,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:58:14,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:58:14,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:58:14,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:58:14,399 INFO L87 Difference]: Start difference. First operand 684 states and 1016 transitions. Second operand has 4 states, 3 states have (on average 50.333333333333336) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:14,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:58:14,463 INFO L93 Difference]: Finished difference Result 684 states and 1016 transitions. [2023-11-19 07:58:14,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:58:14,464 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 50.333333333333336) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2023-11-19 07:58:14,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:58:14,468 INFO L225 Difference]: With dead ends: 684 [2023-11-19 07:58:14,469 INFO L226 Difference]: Without dead ends: 682 [2023-11-19 07:58:14,469 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:58:14,470 INFO L413 NwaCegarLoop]: 741 mSDtfsCounter, 579 mSDsluCounter, 759 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 590 SdHoareTripleChecker+Valid, 1500 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:58:14,470 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [590 Valid, 1500 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:58:14,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2023-11-19 07:58:14,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 682. [2023-11-19 07:58:14,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 682 states, 658 states have (on average 1.4924012158054711) internal successors, (982), 673 states have internal predecessors, (982), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 8 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-19 07:58:14,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 682 states to 682 states and 1014 transitions. [2023-11-19 07:58:14,495 INFO L78 Accepts]: Start accepts. Automaton has 682 states and 1014 transitions. Word has length 151 [2023-11-19 07:58:14,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:58:14,496 INFO L495 AbstractCegarLoop]: Abstraction has 682 states and 1014 transitions. [2023-11-19 07:58:14,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 50.333333333333336) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:14,496 INFO L276 IsEmpty]: Start isEmpty. Operand 682 states and 1014 transitions. [2023-11-19 07:58:14,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-11-19 07:58:14,498 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:58:14,498 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 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, 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, 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, 1, 1] [2023-11-19 07:58:14,516 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6245f7b5-b968-47a6-9041-d74bfeb86510/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-19 07:58:14,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6245f7b5-b968-47a6-9041-d74bfeb86510/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:58:14,705 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-11-19 07:58:14,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:14,705 INFO L85 PathProgramCache]: Analyzing trace with hash -142459799, now seen corresponding path program 1 times [2023-11-19 07:58:14,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:14,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742770751] [2023-11-19 07:58:14,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:14,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:14,785 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:58:14,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2016863930] [2023-11-19 07:58:14,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:14,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:58:14,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6245f7b5-b968-47a6-9041-d74bfeb86510/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:58:14,787 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6245f7b5-b968-47a6-9041-d74bfeb86510/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:58:14,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6245f7b5-b968-47a6-9041-d74bfeb86510/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-19 07:58:15,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:15,352 INFO L262 TraceCheckSpWp]: Trace formula consists of 723 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:58:15,358 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:58:15,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:58:15,620 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:58:15,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:58:15,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742770751] [2023-11-19 07:58:15,620 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:58:15,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2016863930] [2023-11-19 07:58:15,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2016863930] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:15,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:58:15,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:58:15,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090445280] [2023-11-19 07:58:15,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:15,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:58:15,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:58:15,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:58:15,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:58:15,623 INFO L87 Difference]: Start difference. First operand 682 states and 1014 transitions. Second operand has 4 states, 3 states have (on average 50.666666666666664) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:15,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:58:15,723 INFO L93 Difference]: Finished difference Result 1036 states and 1526 transitions. [2023-11-19 07:58:15,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:58:15,724 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 50.666666666666664) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 152 [2023-11-19 07:58:15,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:58:15,731 INFO L225 Difference]: With dead ends: 1036 [2023-11-19 07:58:15,731 INFO L226 Difference]: Without dead ends: 1035 [2023-11-19 07:58:15,731 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:58:15,732 INFO L413 NwaCegarLoop]: 835 mSDtfsCounter, 572 mSDsluCounter, 1575 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 583 SdHoareTripleChecker+Valid, 2410 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:58:15,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [583 Valid, 2410 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:58:15,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1035 states. [2023-11-19 07:58:15,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1035 to 1033. [2023-11-19 07:58:15,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1033 states, 1003 states have (on average 1.4765702891326022) internal successors, (1481), 1018 states have internal predecessors, (1481), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 14 states have call predecessors, (22), 22 states have call successors, (22) [2023-11-19 07:58:15,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1033 states to 1033 states and 1525 transitions. [2023-11-19 07:58:15,772 INFO L78 Accepts]: Start accepts. Automaton has 1033 states and 1525 transitions. Word has length 152 [2023-11-19 07:58:15,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:58:15,773 INFO L495 AbstractCegarLoop]: Abstraction has 1033 states and 1525 transitions. [2023-11-19 07:58:15,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 50.666666666666664) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:15,773 INFO L276 IsEmpty]: Start isEmpty. Operand 1033 states and 1525 transitions. [2023-11-19 07:58:15,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-11-19 07:58:15,775 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:58:15,776 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 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, 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, 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, 1, 1] [2023-11-19 07:58:15,799 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6245f7b5-b968-47a6-9041-d74bfeb86510/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-19 07:58:15,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6245f7b5-b968-47a6-9041-d74bfeb86510/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:58:15,999 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-11-19 07:58:15,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:15,999 INFO L85 PathProgramCache]: Analyzing trace with hash -2100076302, now seen corresponding path program 1 times [2023-11-19 07:58:16,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:16,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681378563] [2023-11-19 07:58:16,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:16,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:16,088 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:58:16,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1327583010] [2023-11-19 07:58:16,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:16,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:58:16,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6245f7b5-b968-47a6-9041-d74bfeb86510/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:58:16,090 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6245f7b5-b968-47a6-9041-d74bfeb86510/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:58:16,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6245f7b5-b968-47a6-9041-d74bfeb86510/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-19 07:58:16,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:16,619 INFO L262 TraceCheckSpWp]: Trace formula consists of 753 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 07:58:16,624 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:58:17,155 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:58:17,155 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:58:17,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:58:17,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681378563] [2023-11-19 07:58:17,156 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:58:17,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1327583010] [2023-11-19 07:58:17,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1327583010] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:17,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:58:17,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:58:17,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581475423] [2023-11-19 07:58:17,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:17,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:58:17,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:58:17,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:58:17,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:58:17,159 INFO L87 Difference]: Start difference. First operand 1033 states and 1525 transitions. Second operand has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:17,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:58:17,261 INFO L93 Difference]: Finished difference Result 1915 states and 2846 transitions. [2023-11-19 07:58:17,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:58:17,264 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 157 [2023-11-19 07:58:17,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:58:17,272 INFO L225 Difference]: With dead ends: 1915 [2023-11-19 07:58:17,272 INFO L226 Difference]: Without dead ends: 1187 [2023-11-19 07:58:17,274 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:58:17,275 INFO L413 NwaCegarLoop]: 935 mSDtfsCounter, 495 mSDsluCounter, 736 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 505 SdHoareTripleChecker+Valid, 1671 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:58:17,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [505 Valid, 1671 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:58:17,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1187 states. [2023-11-19 07:58:17,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1187 to 1183. [2023-11-19 07:58:17,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1183 states, 1143 states have (on average 1.489063867016623) internal successors, (1702), 1168 states have internal predecessors, (1702), 32 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (32), 16 states have call predecessors, (32), 32 states have call successors, (32) [2023-11-19 07:58:17,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1183 states to 1183 states and 1766 transitions. [2023-11-19 07:58:17,324 INFO L78 Accepts]: Start accepts. Automaton has 1183 states and 1766 transitions. Word has length 157 [2023-11-19 07:58:17,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:58:17,324 INFO L495 AbstractCegarLoop]: Abstraction has 1183 states and 1766 transitions. [2023-11-19 07:58:17,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:17,325 INFO L276 IsEmpty]: Start isEmpty. Operand 1183 states and 1766 transitions. [2023-11-19 07:58:17,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-11-19 07:58:17,327 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:58:17,328 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:58:17,357 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6245f7b5-b968-47a6-9041-d74bfeb86510/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-19 07:58:17,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6245f7b5-b968-47a6-9041-d74bfeb86510/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-19 07:58:17,553 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-11-19 07:58:17,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:17,554 INFO L85 PathProgramCache]: Analyzing trace with hash -556196850, now seen corresponding path program 1 times [2023-11-19 07:58:17,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:17,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984486070] [2023-11-19 07:58:17,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:17,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:17,652 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:58:17,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1661250064] [2023-11-19 07:58:17,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:17,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:58:17,653 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6245f7b5-b968-47a6-9041-d74bfeb86510/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:58:17,654 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6245f7b5-b968-47a6-9041-d74bfeb86510/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:58:17,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6245f7b5-b968-47a6-9041-d74bfeb86510/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-19 07:58:18,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:18,249 INFO L262 TraceCheckSpWp]: Trace formula consists of 900 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 07:58:18,282 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:58:18,526 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 07:58:18,526 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:58:18,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:58:18,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984486070] [2023-11-19 07:58:18,527 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:58:18,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1661250064] [2023-11-19 07:58:18,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1661250064] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:18,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:58:18,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:58:18,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188318802] [2023-11-19 07:58:18,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:18,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:58:18,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:58:18,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:58:18,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:58:18,531 INFO L87 Difference]: Start difference. First operand 1183 states and 1766 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 07:58:18,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:58:18,618 INFO L93 Difference]: Finished difference Result 2233 states and 3337 transitions. [2023-11-19 07:58:18,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:58:18,620 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 172 [2023-11-19 07:58:18,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:58:18,628 INFO L225 Difference]: With dead ends: 2233 [2023-11-19 07:58:18,629 INFO L226 Difference]: Without dead ends: 1181 [2023-11-19 07:58:18,631 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:58:18,632 INFO L413 NwaCegarLoop]: 757 mSDtfsCounter, 123 mSDsluCounter, 742 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 1499 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:58:18,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 1499 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:58:18,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1181 states. [2023-11-19 07:58:18,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1181 to 1181. [2023-11-19 07:58:18,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1181 states, 1141 states have (on average 1.4890446976336547) internal successors, (1699), 1166 states have internal predecessors, (1699), 32 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (32), 16 states have call predecessors, (32), 32 states have call successors, (32) [2023-11-19 07:58:18,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1181 states to 1181 states and 1763 transitions. [2023-11-19 07:58:18,687 INFO L78 Accepts]: Start accepts. Automaton has 1181 states and 1763 transitions. Word has length 172 [2023-11-19 07:58:18,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:58:18,687 INFO L495 AbstractCegarLoop]: Abstraction has 1181 states and 1763 transitions. [2023-11-19 07:58:18,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 07:58:18,688 INFO L276 IsEmpty]: Start isEmpty. Operand 1181 states and 1763 transitions. [2023-11-19 07:58:18,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2023-11-19 07:58:18,691 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:58:18,691 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:58:18,724 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6245f7b5-b968-47a6-9041-d74bfeb86510/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-19 07:58:18,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6245f7b5-b968-47a6-9041-d74bfeb86510/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-19 07:58:18,901 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-11-19 07:58:18,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:18,901 INFO L85 PathProgramCache]: Analyzing trace with hash 135335964, now seen corresponding path program 1 times [2023-11-19 07:58:18,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:18,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897062314] [2023-11-19 07:58:18,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:18,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:18,995 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:58:18,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [603547982] [2023-11-19 07:58:18,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:18,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:58:18,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6245f7b5-b968-47a6-9041-d74bfeb86510/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:58:18,997 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6245f7b5-b968-47a6-9041-d74bfeb86510/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:58:18,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6245f7b5-b968-47a6-9041-d74bfeb86510/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-19 07:58:19,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:19,788 INFO L262 TraceCheckSpWp]: Trace formula consists of 1047 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-19 07:58:19,795 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:58:19,835 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-19 07:58:19,852 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2023-11-19 07:58:20,211 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:58:20,211 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 45 treesize of output 23 [2023-11-19 07:58:20,452 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-19 07:58:20,453 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:58:20,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:58:20,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897062314] [2023-11-19 07:58:20,453 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:58:20,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [603547982] [2023-11-19 07:58:20,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [603547982] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:20,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:58:20,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-19 07:58:20,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253148883] [2023-11-19 07:58:20,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:20,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-19 07:58:20,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:58:20,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-19 07:58:20,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-11-19 07:58:20,456 INFO L87 Difference]: Start difference. First operand 1181 states and 1763 transitions. Second operand has 11 states, 11 states have (on average 15.454545454545455) internal successors, (170), 11 states have internal predecessors, (170), 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) [2023-11-19 07:58:23,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:58:23,178 INFO L93 Difference]: Finished difference Result 2322 states and 3457 transitions. [2023-11-19 07:58:23,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-19 07:58:23,178 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 15.454545454545455) internal successors, (170), 11 states have internal predecessors, (170), 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 187 [2023-11-19 07:58:23,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:58:23,186 INFO L225 Difference]: With dead ends: 2322 [2023-11-19 07:58:23,186 INFO L226 Difference]: Without dead ends: 1224 [2023-11-19 07:58:23,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2023-11-19 07:58:23,189 INFO L413 NwaCegarLoop]: 738 mSDtfsCounter, 975 mSDsluCounter, 4255 mSDsCounter, 0 mSdLazyCounter, 1167 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 985 SdHoareTripleChecker+Valid, 4993 SdHoareTripleChecker+Invalid, 1177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:58:23,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [985 Valid, 4993 Invalid, 1177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1167 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-11-19 07:58:23,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1224 states. [2023-11-19 07:58:23,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1224 to 1213. [2023-11-19 07:58:23,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1213 states, 1173 states have (on average 1.4799658994032396) internal successors, (1736), 1198 states have internal predecessors, (1736), 32 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (32), 16 states have call predecessors, (32), 32 states have call successors, (32) [2023-11-19 07:58:23,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1213 states to 1213 states and 1800 transitions. [2023-11-19 07:58:23,239 INFO L78 Accepts]: Start accepts. Automaton has 1213 states and 1800 transitions. Word has length 187 [2023-11-19 07:58:23,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:58:23,239 INFO L495 AbstractCegarLoop]: Abstraction has 1213 states and 1800 transitions. [2023-11-19 07:58:23,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.454545454545455) internal successors, (170), 11 states have internal predecessors, (170), 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) [2023-11-19 07:58:23,239 INFO L276 IsEmpty]: Start isEmpty. Operand 1213 states and 1800 transitions. [2023-11-19 07:58:23,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2023-11-19 07:58:23,242 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:58:23,242 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:58:23,273 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6245f7b5-b968-47a6-9041-d74bfeb86510/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-19 07:58:23,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6245f7b5-b968-47a6-9041-d74bfeb86510/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-19 07:58:23,464 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-11-19 07:58:23,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:23,465 INFO L85 PathProgramCache]: Analyzing trace with hash 1539205150, now seen corresponding path program 1 times [2023-11-19 07:58:23,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:23,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362427408] [2023-11-19 07:58:23,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:23,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:23,601 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:58:23,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [892329374] [2023-11-19 07:58:23,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:23,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:58:23,602 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6245f7b5-b968-47a6-9041-d74bfeb86510/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:58:23,603 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6245f7b5-b968-47a6-9041-d74bfeb86510/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:58:23,624 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6245f7b5-b968-47a6-9041-d74bfeb86510/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-19 07:58:24,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:24,257 INFO L262 TraceCheckSpWp]: Trace formula consists of 1045 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:58:24,262 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:58:24,310 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-19 07:58:24,311 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:58:24,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:58:24,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362427408] [2023-11-19 07:58:24,311 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:58:24,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [892329374] [2023-11-19 07:58:24,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [892329374] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:24,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:58:24,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:58:24,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799142247] [2023-11-19 07:58:24,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:24,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:58:24,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:58:24,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:58:24,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:58:24,315 INFO L87 Difference]: Start difference. First operand 1213 states and 1800 transitions. Second operand has 5 states, 5 states have (on average 34.0) internal successors, (170), 5 states have internal predecessors, (170), 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) [2023-11-19 07:58:24,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:58:24,456 INFO L93 Difference]: Finished difference Result 2511 states and 3760 transitions. [2023-11-19 07:58:24,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:58:24,457 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 34.0) internal successors, (170), 5 states have internal predecessors, (170), 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 187 [2023-11-19 07:58:24,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:58:24,466 INFO L225 Difference]: With dead ends: 2511 [2023-11-19 07:58:24,466 INFO L226 Difference]: Without dead ends: 1401 [2023-11-19 07:58:24,468 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:58:24,469 INFO L413 NwaCegarLoop]: 743 mSDtfsCounter, 148 mSDsluCounter, 1470 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 2213 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:58:24,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 2213 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:58:24,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1401 states. [2023-11-19 07:58:24,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1401 to 1236. [2023-11-19 07:58:24,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1236 states, 1196 states have (on average 1.4698996655518395) internal successors, (1758), 1221 states have internal predecessors, (1758), 32 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (32), 16 states have call predecessors, (32), 32 states have call successors, (32) [2023-11-19 07:58:24,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1236 states to 1236 states and 1822 transitions. [2023-11-19 07:58:24,519 INFO L78 Accepts]: Start accepts. Automaton has 1236 states and 1822 transitions. Word has length 187 [2023-11-19 07:58:24,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:58:24,520 INFO L495 AbstractCegarLoop]: Abstraction has 1236 states and 1822 transitions. [2023-11-19 07:58:24,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.0) internal successors, (170), 5 states have internal predecessors, (170), 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) [2023-11-19 07:58:24,520 INFO L276 IsEmpty]: Start isEmpty. Operand 1236 states and 1822 transitions. [2023-11-19 07:58:24,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2023-11-19 07:58:24,523 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:58:24,523 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:58:24,551 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6245f7b5-b968-47a6-9041-d74bfeb86510/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-19 07:58:24,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6245f7b5-b968-47a6-9041-d74bfeb86510/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-19 07:58:24,746 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-11-19 07:58:24,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:24,746 INFO L85 PathProgramCache]: Analyzing trace with hash -1494443713, now seen corresponding path program 1 times [2023-11-19 07:58:24,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:24,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117624489] [2023-11-19 07:58:24,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:24,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:24,844 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:58:24,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1324053717] [2023-11-19 07:58:24,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:24,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:58:24,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6245f7b5-b968-47a6-9041-d74bfeb86510/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:58:24,846 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6245f7b5-b968-47a6-9041-d74bfeb86510/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:58:24,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6245f7b5-b968-47a6-9041-d74bfeb86510/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-19 07:58:25,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:25,836 INFO L262 TraceCheckSpWp]: Trace formula consists of 1048 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-19 07:58:25,842 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:58:25,895 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-19 07:58:25,895 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:58:25,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:58:25,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117624489] [2023-11-19 07:58:25,895 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:58:25,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1324053717] [2023-11-19 07:58:25,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1324053717] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:25,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:58:25,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:58:25,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049176355] [2023-11-19 07:58:25,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:25,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:58:25,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:58:25,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:58:25,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:58:25,898 INFO L87 Difference]: Start difference. First operand 1236 states and 1822 transitions. Second operand has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 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) [2023-11-19 07:58:26,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:58:26,169 INFO L93 Difference]: Finished difference Result 2380 states and 3526 transitions. [2023-11-19 07:58:26,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:58:26,170 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 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 188 [2023-11-19 07:58:26,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:58:26,178 INFO L225 Difference]: With dead ends: 2380 [2023-11-19 07:58:26,178 INFO L226 Difference]: Without dead ends: 1259 [2023-11-19 07:58:26,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:58:26,181 INFO L413 NwaCegarLoop]: 750 mSDtfsCounter, 15 mSDsluCounter, 1334 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 2084 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:58:26,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 2084 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:58:26,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1259 states. [2023-11-19 07:58:26,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1259 to 1247. [2023-11-19 07:58:26,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1247 states, 1207 states have (on average 1.4664457332228666) internal successors, (1770), 1232 states have internal predecessors, (1770), 32 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (32), 16 states have call predecessors, (32), 32 states have call successors, (32) [2023-11-19 07:58:26,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1247 states to 1247 states and 1834 transitions. [2023-11-19 07:58:26,228 INFO L78 Accepts]: Start accepts. Automaton has 1247 states and 1834 transitions. Word has length 188 [2023-11-19 07:58:26,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:58:26,229 INFO L495 AbstractCegarLoop]: Abstraction has 1247 states and 1834 transitions. [2023-11-19 07:58:26,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 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) [2023-11-19 07:58:26,229 INFO L276 IsEmpty]: Start isEmpty. Operand 1247 states and 1834 transitions. [2023-11-19 07:58:26,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2023-11-19 07:58:26,232 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:58:26,233 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:58:26,263 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6245f7b5-b968-47a6-9041-d74bfeb86510/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-19 07:58:26,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6245f7b5-b968-47a6-9041-d74bfeb86510/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-19 07:58:26,458 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-11-19 07:58:26,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:26,459 INFO L85 PathProgramCache]: Analyzing trace with hash -37138729, now seen corresponding path program 1 times [2023-11-19 07:58:26,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:26,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672133161] [2023-11-19 07:58:26,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:26,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:26,568 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:58:26,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1273338229] [2023-11-19 07:58:26,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:26,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:58:26,570 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6245f7b5-b968-47a6-9041-d74bfeb86510/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:58:26,571 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6245f7b5-b968-47a6-9041-d74bfeb86510/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:58:26,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6245f7b5-b968-47a6-9041-d74bfeb86510/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-19 07:58:27,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:27,366 INFO L262 TraceCheckSpWp]: Trace formula consists of 1049 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-19 07:58:27,371 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:58:27,589 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-19 07:58:27,589 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:58:27,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:58:27,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672133161] [2023-11-19 07:58:27,590 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:58:27,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1273338229] [2023-11-19 07:58:27,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1273338229] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:27,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:58:27,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 07:58:27,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394323875] [2023-11-19 07:58:27,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:27,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:58:27,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:58:27,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:58:27,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:58:27,593 INFO L87 Difference]: Start difference. First operand 1247 states and 1834 transitions. Second operand has 6 states, 6 states have (on average 28.666666666666668) internal successors, (172), 6 states have internal predecessors, (172), 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) [2023-11-19 07:58:28,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:58:28,095 INFO L93 Difference]: Finished difference Result 2388 states and 3530 transitions. [2023-11-19 07:58:28,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:58:28,096 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 28.666666666666668) internal successors, (172), 6 states have internal predecessors, (172), 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 189 [2023-11-19 07:58:28,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:58:28,105 INFO L225 Difference]: With dead ends: 2388 [2023-11-19 07:58:28,105 INFO L226 Difference]: Without dead ends: 1261 [2023-11-19 07:58:28,108 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:58:28,109 INFO L413 NwaCegarLoop]: 749 mSDtfsCounter, 10 mSDsluCounter, 2562 mSDsCounter, 0 mSdLazyCounter, 487 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 3311 SdHoareTripleChecker+Invalid, 488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 07:58:28,109 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 3311 Invalid, 488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 487 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 07:58:28,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1261 states. [2023-11-19 07:58:28,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1261 to 1257. [2023-11-19 07:58:28,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1257 states, 1217 states have (on average 1.4658997534921938) internal successors, (1784), 1242 states have internal predecessors, (1784), 32 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (32), 16 states have call predecessors, (32), 32 states have call successors, (32) [2023-11-19 07:58:28,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1257 states to 1257 states and 1848 transitions. [2023-11-19 07:58:28,165 INFO L78 Accepts]: Start accepts. Automaton has 1257 states and 1848 transitions. Word has length 189 [2023-11-19 07:58:28,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:58:28,166 INFO L495 AbstractCegarLoop]: Abstraction has 1257 states and 1848 transitions. [2023-11-19 07:58:28,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.666666666666668) internal successors, (172), 6 states have internal predecessors, (172), 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) [2023-11-19 07:58:28,166 INFO L276 IsEmpty]: Start isEmpty. Operand 1257 states and 1848 transitions. [2023-11-19 07:58:28,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2023-11-19 07:58:28,168 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:58:28,168 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:58:28,200 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6245f7b5-b968-47a6-9041-d74bfeb86510/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-19 07:58:28,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6245f7b5-b968-47a6-9041-d74bfeb86510/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-19 07:58:28,385 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-11-19 07:58:28,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:28,385 INFO L85 PathProgramCache]: Analyzing trace with hash 1857195157, now seen corresponding path program 1 times [2023-11-19 07:58:28,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:28,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027562906] [2023-11-19 07:58:28,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:28,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:28,477 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:58:28,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1026535301] [2023-11-19 07:58:28,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:28,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:58:28,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6245f7b5-b968-47a6-9041-d74bfeb86510/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:58:28,479 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6245f7b5-b968-47a6-9041-d74bfeb86510/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:58:28,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6245f7b5-b968-47a6-9041-d74bfeb86510/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-19 07:58:29,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:29,454 INFO L262 TraceCheckSpWp]: Trace formula consists of 1047 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 07:58:29,461 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:58:29,491 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-19 07:58:29,492 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:58:29,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:58:29,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027562906] [2023-11-19 07:58:29,492 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:58:29,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1026535301] [2023-11-19 07:58:29,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1026535301] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:29,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:58:29,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:58:29,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141958599] [2023-11-19 07:58:29,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:29,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:58:29,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:58:29,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:58:29,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:58:29,495 INFO L87 Difference]: Start difference. First operand 1257 states and 1848 transitions. Second operand has 4 states, 4 states have (on average 43.75) internal successors, (175), 4 states have internal predecessors, (175), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-19 07:58:29,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:58:29,563 INFO L93 Difference]: Finished difference Result 2354 states and 3484 transitions. [2023-11-19 07:58:29,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:58:29,564 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 43.75) internal successors, (175), 4 states have internal predecessors, (175), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 189 [2023-11-19 07:58:29,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:58:29,572 INFO L225 Difference]: With dead ends: 2354 [2023-11-19 07:58:29,573 INFO L226 Difference]: Without dead ends: 1260 [2023-11-19 07:58:29,575 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:58:29,576 INFO L413 NwaCegarLoop]: 754 mSDtfsCounter, 2 mSDsluCounter, 1501 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2255 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:58:29,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2255 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:58:29,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1260 states. [2023-11-19 07:58:29,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1260 to 1260. [2023-11-19 07:58:29,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1260 states, 1219 states have (on average 1.4659557013945856) internal successors, (1787), 1245 states have internal predecessors, (1787), 32 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (36), 16 states have call predecessors, (36), 32 states have call successors, (36) [2023-11-19 07:58:29,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1260 states to 1260 states and 1855 transitions. [2023-11-19 07:58:29,625 INFO L78 Accepts]: Start accepts. Automaton has 1260 states and 1855 transitions. Word has length 189 [2023-11-19 07:58:29,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:58:29,626 INFO L495 AbstractCegarLoop]: Abstraction has 1260 states and 1855 transitions. [2023-11-19 07:58:29,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.75) internal successors, (175), 4 states have internal predecessors, (175), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-19 07:58:29,626 INFO L276 IsEmpty]: Start isEmpty. Operand 1260 states and 1855 transitions. [2023-11-19 07:58:29,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-11-19 07:58:29,628 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:58:29,629 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:58:29,645 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6245f7b5-b968-47a6-9041-d74bfeb86510/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-19 07:58:29,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6245f7b5-b968-47a6-9041-d74bfeb86510/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-19 07:58:29,840 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-11-19 07:58:29,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:29,841 INFO L85 PathProgramCache]: Analyzing trace with hash -294073007, now seen corresponding path program 1 times [2023-11-19 07:58:29,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:29,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191807754] [2023-11-19 07:58:29,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:29,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:29,969 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:58:29,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [444606883] [2023-11-19 07:58:29,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:29,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:58:29,970 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6245f7b5-b968-47a6-9041-d74bfeb86510/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:58:29,972 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6245f7b5-b968-47a6-9041-d74bfeb86510/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:58:29,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6245f7b5-b968-47a6-9041-d74bfeb86510/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-19 07:58:32,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:32,054 INFO L262 TraceCheckSpWp]: Trace formula consists of 1107 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-19 07:58:32,059 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:58:39,383 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-19 07:58:39,383 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:58:39,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:58:39,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191807754] [2023-11-19 07:58:39,384 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:58:39,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [444606883] [2023-11-19 07:58:39,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [444606883] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:39,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:58:39,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 07:58:39,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572864910] [2023-11-19 07:58:39,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:39,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:58:39,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:58:39,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:58:39,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:58:39,387 INFO L87 Difference]: Start difference. First operand 1260 states and 1855 transitions. Second operand has 7 states, 7 states have (on average 24.714285714285715) internal successors, (173), 7 states have internal predecessors, (173), 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) [2023-11-19 07:58:41,914 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-19 07:58:42,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:58:42,352 INFO L93 Difference]: Finished difference Result 2411 states and 3568 transitions. [2023-11-19 07:58:42,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:58:42,353 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.714285714285715) internal successors, (173), 7 states have internal predecessors, (173), 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 193 [2023-11-19 07:58:42,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:58:42,361 INFO L225 Difference]: With dead ends: 2411 [2023-11-19 07:58:42,361 INFO L226 Difference]: Without dead ends: 1280 [2023-11-19 07:58:42,363 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:58:42,364 INFO L413 NwaCegarLoop]: 742 mSDtfsCounter, 16 mSDsluCounter, 3158 mSDsCounter, 0 mSdLazyCounter, 658 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 3900 SdHoareTripleChecker+Invalid, 659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-11-19 07:58:42,365 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 3900 Invalid, 659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 658 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-11-19 07:58:42,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1280 states. [2023-11-19 07:58:42,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1280 to 1272. [2023-11-19 07:58:42,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1272 states, 1231 states have (on average 1.4646628757108042) internal successors, (1803), 1257 states have internal predecessors, (1803), 32 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (36), 16 states have call predecessors, (36), 32 states have call successors, (36) [2023-11-19 07:58:42,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1272 states to 1272 states and 1871 transitions. [2023-11-19 07:58:42,415 INFO L78 Accepts]: Start accepts. Automaton has 1272 states and 1871 transitions. Word has length 193 [2023-11-19 07:58:42,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:58:42,415 INFO L495 AbstractCegarLoop]: Abstraction has 1272 states and 1871 transitions. [2023-11-19 07:58:42,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.714285714285715) internal successors, (173), 7 states have internal predecessors, (173), 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) [2023-11-19 07:58:42,415 INFO L276 IsEmpty]: Start isEmpty. Operand 1272 states and 1871 transitions. [2023-11-19 07:58:42,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2023-11-19 07:58:42,417 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:58:42,418 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:58:42,437 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6245f7b5-b968-47a6-9041-d74bfeb86510/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-19 07:58:42,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6245f7b5-b968-47a6-9041-d74bfeb86510/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-19 07:58:42,637 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-11-19 07:58:42,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:42,638 INFO L85 PathProgramCache]: Analyzing trace with hash 617500629, now seen corresponding path program 1 times [2023-11-19 07:58:42,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:42,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176859864] [2023-11-19 07:58:42,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:42,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:42,775 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:58:42,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [374816413] [2023-11-19 07:58:42,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:42,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:58:42,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6245f7b5-b968-47a6-9041-d74bfeb86510/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:58:42,779 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6245f7b5-b968-47a6-9041-d74bfeb86510/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:58:42,800 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6245f7b5-b968-47a6-9041-d74bfeb86510/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-19 07:58:43,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:43,799 INFO L262 TraceCheckSpWp]: Trace formula consists of 1110 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-19 07:58:43,804 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:58:43,979 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-19 07:58:43,980 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:58:43,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:58:43,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176859864] [2023-11-19 07:58:43,980 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:58:43,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [374816413] [2023-11-19 07:58:43,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [374816413] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:43,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:58:43,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 07:58:43,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238434056] [2023-11-19 07:58:43,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:43,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:58:43,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:58:43,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:58:43,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:58:43,983 INFO L87 Difference]: Start difference. First operand 1272 states and 1871 transitions. Second operand has 7 states, 7 states have (on average 24.857142857142858) internal successors, (174), 7 states have internal predecessors, (174), 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) [2023-11-19 07:58:44,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:58:44,681 INFO L93 Difference]: Finished difference Result 2425 states and 3586 transitions. [2023-11-19 07:58:44,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:58:44,682 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.857142857142858) internal successors, (174), 7 states have internal predecessors, (174), 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 194 [2023-11-19 07:58:44,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:58:44,691 INFO L225 Difference]: With dead ends: 2425 [2023-11-19 07:58:44,692 INFO L226 Difference]: Without dead ends: 1288 [2023-11-19 07:58:44,695 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:58:44,695 INFO L413 NwaCegarLoop]: 746 mSDtfsCounter, 15 mSDsluCounter, 3159 mSDsCounter, 0 mSdLazyCounter, 678 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 3905 SdHoareTripleChecker+Invalid, 679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-19 07:58:44,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 3905 Invalid, 679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 678 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-19 07:58:44,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1288 states. [2023-11-19 07:58:44,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1288 to 1274. [2023-11-19 07:58:44,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1274 states, 1233 states have (on average 1.4655312246553123) internal successors, (1807), 1259 states have internal predecessors, (1807), 32 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (36), 16 states have call predecessors, (36), 32 states have call successors, (36) [2023-11-19 07:58:44,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1274 states to 1274 states and 1875 transitions. [2023-11-19 07:58:44,751 INFO L78 Accepts]: Start accepts. Automaton has 1274 states and 1875 transitions. Word has length 194 [2023-11-19 07:58:44,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:58:44,752 INFO L495 AbstractCegarLoop]: Abstraction has 1274 states and 1875 transitions. [2023-11-19 07:58:44,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.857142857142858) internal successors, (174), 7 states have internal predecessors, (174), 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) [2023-11-19 07:58:44,753 INFO L276 IsEmpty]: Start isEmpty. Operand 1274 states and 1875 transitions. [2023-11-19 07:58:44,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2023-11-19 07:58:44,755 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:58:44,755 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:58:44,787 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6245f7b5-b968-47a6-9041-d74bfeb86510/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-19 07:58:44,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6245f7b5-b968-47a6-9041-d74bfeb86510/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-19 07:58:44,980 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-11-19 07:58:44,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:44,981 INFO L85 PathProgramCache]: Analyzing trace with hash 1203945164, now seen corresponding path program 1 times [2023-11-19 07:58:44,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:44,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381593707] [2023-11-19 07:58:44,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:44,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:45,093 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:58:45,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [107474251] [2023-11-19 07:58:45,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:45,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:58:45,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6245f7b5-b968-47a6-9041-d74bfeb86510/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:58:45,095 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6245f7b5-b968-47a6-9041-d74bfeb86510/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:58:45,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6245f7b5-b968-47a6-9041-d74bfeb86510/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-19 07:58:46,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:46,188 INFO L262 TraceCheckSpWp]: Trace formula consists of 1108 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-19 07:58:46,195 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:58:46,374 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-19 07:58:46,374 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:58:46,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:58:46,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381593707] [2023-11-19 07:58:46,375 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:58:46,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [107474251] [2023-11-19 07:58:46,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [107474251] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:46,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:58:46,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-19 07:58:46,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550794793] [2023-11-19 07:58:46,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:46,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:58:46,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:58:46,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:58:46,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:58:46,380 INFO L87 Difference]: Start difference. First operand 1274 states and 1875 transitions. Second operand has 8 states, 8 states have (on average 21.75) internal successors, (174), 8 states have internal predecessors, (174), 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) [2023-11-19 07:58:48,929 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-19 07:58:49,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:58:49,403 INFO L93 Difference]: Finished difference Result 2432 states and 3593 transitions. [2023-11-19 07:58:49,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:58:49,404 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.75) internal successors, (174), 8 states have internal predecessors, (174), 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 194 [2023-11-19 07:58:49,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:58:49,414 INFO L225 Difference]: With dead ends: 2432 [2023-11-19 07:58:49,415 INFO L226 Difference]: Without dead ends: 1298 [2023-11-19 07:58:49,417 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:58:49,418 INFO L413 NwaCegarLoop]: 740 mSDtfsCounter, 19 mSDsluCounter, 3815 mSDsCounter, 0 mSdLazyCounter, 764 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 4555 SdHoareTripleChecker+Invalid, 765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 764 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-11-19 07:58:49,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 4555 Invalid, 765 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 764 Invalid, 1 Unknown, 0 Unchecked, 2.9s Time] [2023-11-19 07:58:49,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1298 states. [2023-11-19 07:58:49,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1298 to 1284. [2023-11-19 07:58:49,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1284 states, 1243 states have (on average 1.4633950120675785) internal successors, (1819), 1269 states have internal predecessors, (1819), 32 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (36), 16 states have call predecessors, (36), 32 states have call successors, (36) [2023-11-19 07:58:49,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1284 states to 1284 states and 1887 transitions. [2023-11-19 07:58:49,465 INFO L78 Accepts]: Start accepts. Automaton has 1284 states and 1887 transitions. Word has length 194 [2023-11-19 07:58:49,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:58:49,466 INFO L495 AbstractCegarLoop]: Abstraction has 1284 states and 1887 transitions. [2023-11-19 07:58:49,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.75) internal successors, (174), 8 states have internal predecessors, (174), 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) [2023-11-19 07:58:49,466 INFO L276 IsEmpty]: Start isEmpty. Operand 1284 states and 1887 transitions. [2023-11-19 07:58:49,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2023-11-19 07:58:49,468 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:58:49,468 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:58:49,500 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6245f7b5-b968-47a6-9041-d74bfeb86510/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-11-19 07:58:49,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6245f7b5-b968-47a6-9041-d74bfeb86510/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:58:49,688 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-11-19 07:58:49,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:49,689 INFO L85 PathProgramCache]: Analyzing trace with hash -602043192, now seen corresponding path program 1 times [2023-11-19 07:58:49,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:49,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373197972] [2023-11-19 07:58:49,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:49,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:49,778 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:58:49,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [300428765] [2023-11-19 07:58:49,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:49,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:58:49,779 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6245f7b5-b968-47a6-9041-d74bfeb86510/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:58:49,780 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6245f7b5-b968-47a6-9041-d74bfeb86510/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:58:49,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6245f7b5-b968-47a6-9041-d74bfeb86510/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-19 07:58:50,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:50,813 INFO L262 TraceCheckSpWp]: Trace formula consists of 1111 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-19 07:58:50,819 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:58:50,958 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-19 07:58:50,958 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:58:50,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:58:50,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373197972] [2023-11-19 07:58:50,959 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:58:50,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [300428765] [2023-11-19 07:58:50,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [300428765] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:50,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:58:50,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-19 07:58:50,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754245977] [2023-11-19 07:58:50,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:50,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 07:58:50,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:58:50,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 07:58:50,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:58:50,962 INFO L87 Difference]: Start difference. First operand 1284 states and 1887 transitions. Second operand has 9 states, 9 states have (on average 19.444444444444443) internal successors, (175), 9 states have internal predecessors, (175), 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)