./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/lcm1_unwindbound100.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/lcm1_unwindbound100.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya --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 ce152ab821d49eb9acb39ce161d7ea2c6b8a3d3fa002051e62cb16783ef9575a --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 00:57:05,816 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 00:57:05,894 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-29 00:57:05,898 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 00:57:05,899 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 00:57:05,933 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 00:57:05,933 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 00:57:05,934 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 00:57:05,935 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 00:57:05,935 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 00:57:05,936 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 00:57:05,936 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 00:57:05,937 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 00:57:05,937 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 00:57:05,938 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 00:57:05,938 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 00:57:05,939 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 00:57:05,939 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 00:57:05,940 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 00:57:05,940 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 00:57:05,941 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 00:57:05,941 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 00:57:05,942 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 00:57:05,942 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 00:57:05,943 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-29 00:57:05,943 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 00:57:05,944 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 00:57:05,944 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 00:57:05,944 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 00:57:05,945 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 00:57:05,945 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 00:57:05,946 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 00:57:05,946 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 00:57:05,946 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:57:05,947 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 00:57:05,947 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 00:57:05,948 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 00:57:05,948 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 00:57:05,948 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 00:57:05,949 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 00:57:05,949 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 00:57:05,949 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 00:57:05,949 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 00:57:05,950 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 00:57:05,950 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_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ce152ab821d49eb9acb39ce161d7ea2c6b8a3d3fa002051e62cb16783ef9575a [2023-11-29 00:57:06,165 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 00:57:06,215 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 00:57:06,217 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 00:57:06,218 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 00:57:06,219 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 00:57:06,220 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/nla-digbench-scaling/lcm1_unwindbound100.c [2023-11-29 00:57:08,925 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 00:57:09,117 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 00:57:09,118 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/sv-benchmarks/c/nla-digbench-scaling/lcm1_unwindbound100.c [2023-11-29 00:57:09,125 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/data/763bae9c4/e45fee04a91145e5ba4ece60542f946d/FLAG3795ed959 [2023-11-29 00:57:09,139 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/data/763bae9c4/e45fee04a91145e5ba4ece60542f946d [2023-11-29 00:57:09,141 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 00:57:09,142 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 00:57:09,143 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 00:57:09,143 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 00:57:09,147 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 00:57:09,148 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:57:09" (1/1) ... [2023-11-29 00:57:09,149 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@653cb97f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:57:09, skipping insertion in model container [2023-11-29 00:57:09,149 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:57:09" (1/1) ... [2023-11-29 00:57:09,168 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 00:57:09,307 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:57:09,318 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 00:57:09,338 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:57:09,353 INFO L206 MainTranslator]: Completed translation [2023-11-29 00:57:09,354 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:57:09 WrapperNode [2023-11-29 00:57:09,354 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 00:57:09,355 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 00:57:09,355 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 00:57:09,356 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 00:57:09,363 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:57:09" (1/1) ... [2023-11-29 00:57:09,370 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:57:09" (1/1) ... [2023-11-29 00:57:09,392 INFO L138 Inliner]: procedures = 14, calls = 24, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 90 [2023-11-29 00:57:09,392 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 00:57:09,393 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 00:57:09,393 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 00:57:09,393 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 00:57:09,404 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:57:09" (1/1) ... [2023-11-29 00:57:09,405 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:57:09" (1/1) ... [2023-11-29 00:57:09,406 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:57:09" (1/1) ... [2023-11-29 00:57:09,419 INFO L175 MemorySlicer]: Split 9 memory accesses to 2 slices as follows [2, 7]. 78 percent of accesses are in the largest equivalence class. The 9 initializations are split as follows [2, 7]. The 0 writes are split as follows [0, 0]. [2023-11-29 00:57:09,419 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:57:09" (1/1) ... [2023-11-29 00:57:09,419 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:57:09" (1/1) ... [2023-11-29 00:57:09,423 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:57:09" (1/1) ... [2023-11-29 00:57:09,427 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:57:09" (1/1) ... [2023-11-29 00:57:09,429 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:57:09" (1/1) ... [2023-11-29 00:57:09,430 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:57:09" (1/1) ... [2023-11-29 00:57:09,432 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 00:57:09,432 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 00:57:09,433 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 00:57:09,433 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 00:57:09,434 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:57:09" (1/1) ... [2023-11-29 00:57:09,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:57:09,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:57:09,463 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 00:57:09,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 00:57:09,495 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 00:57:09,495 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-29 00:57:09,495 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-29 00:57:09,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 00:57:09,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 00:57:09,496 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 00:57:09,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 00:57:09,496 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-29 00:57:09,496 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-29 00:57:09,557 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 00:57:09,559 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 00:57:09,724 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 00:57:09,744 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 00:57:09,745 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-29 00:57:09,745 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:57:09 BoogieIcfgContainer [2023-11-29 00:57:09,745 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 00:57:09,748 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 00:57:09,748 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 00:57:09,752 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 00:57:09,752 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 12:57:09" (1/3) ... [2023-11-29 00:57:09,753 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7878a8bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:57:09, skipping insertion in model container [2023-11-29 00:57:09,753 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:57:09" (2/3) ... [2023-11-29 00:57:09,753 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7878a8bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:57:09, skipping insertion in model container [2023-11-29 00:57:09,754 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:57:09" (3/3) ... [2023-11-29 00:57:09,755 INFO L112 eAbstractionObserver]: Analyzing ICFG lcm1_unwindbound100.c [2023-11-29 00:57:09,773 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 00:57:09,773 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-29 00:57:09,811 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 00:57:09,817 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;@c09f275, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 00:57:09,817 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-29 00:57:09,821 INFO L276 IsEmpty]: Start isEmpty. Operand has 42 states, 24 states have (on average 1.7083333333333333) internal successors, (41), 30 states have internal predecessors, (41), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-29 00:57:09,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-29 00:57:09,827 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:57:09,828 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:57:09,828 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 00:57:09,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:57:09,833 INFO L85 PathProgramCache]: Analyzing trace with hash 529971304, now seen corresponding path program 1 times [2023-11-29 00:57:09,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:57:09,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135412867] [2023-11-29 00:57:09,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:57:09,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:57:09,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:57:09,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:57:10,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:57:10,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-29 00:57:10,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:57:10,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 00:57:10,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:57:10,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-29 00:57:10,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:57:10,031 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-29 00:57:10,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:57:10,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135412867] [2023-11-29 00:57:10,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135412867] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:57:10,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:57:10,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:57:10,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92839023] [2023-11-29 00:57:10,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:57:10,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 00:57:10,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:57:10,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 00:57:10,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 00:57:10,074 INFO L87 Difference]: Start difference. First operand has 42 states, 24 states have (on average 1.7083333333333333) internal successors, (41), 30 states have internal predecessors, (41), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 00:57:10,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:57:10,103 INFO L93 Difference]: Finished difference Result 82 states and 124 transitions. [2023-11-29 00:57:10,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 00:57:10,106 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 24 [2023-11-29 00:57:10,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:57:10,113 INFO L225 Difference]: With dead ends: 82 [2023-11-29 00:57:10,113 INFO L226 Difference]: Without dead ends: 38 [2023-11-29 00:57:10,117 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 00:57:10,120 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:57:10,122 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 52 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:57:10,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2023-11-29 00:57:10,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2023-11-29 00:57:10,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 23 states have (on average 1.434782608695652) internal successors, (33), 28 states have internal predecessors, (33), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-29 00:57:10,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 47 transitions. [2023-11-29 00:57:10,163 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 47 transitions. Word has length 24 [2023-11-29 00:57:10,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:57:10,164 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 47 transitions. [2023-11-29 00:57:10,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 00:57:10,164 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 47 transitions. [2023-11-29 00:57:10,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-29 00:57:10,166 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:57:10,166 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:57:10,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 00:57:10,167 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 00:57:10,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:57:10,168 INFO L85 PathProgramCache]: Analyzing trace with hash 689927656, now seen corresponding path program 1 times [2023-11-29 00:57:10,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:57:10,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465728841] [2023-11-29 00:57:10,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:57:10,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:57:10,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:57:10,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:57:10,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:57:10,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-29 00:57:10,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:57:10,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 00:57:10,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:57:10,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-29 00:57:10,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:57:10,370 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-29 00:57:10,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:57:10,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465728841] [2023-11-29 00:57:10,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465728841] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:57:10,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:57:10,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:57:10,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386936348] [2023-11-29 00:57:10,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:57:10,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:57:10,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:57:10,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:57:10,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:57:10,374 INFO L87 Difference]: Start difference. First operand 38 states and 47 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-29 00:57:10,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:57:10,424 INFO L93 Difference]: Finished difference Result 44 states and 53 transitions. [2023-11-29 00:57:10,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 00:57:10,425 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 24 [2023-11-29 00:57:10,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:57:10,426 INFO L225 Difference]: With dead ends: 44 [2023-11-29 00:57:10,426 INFO L226 Difference]: Without dead ends: 42 [2023-11-29 00:57:10,427 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:57:10,429 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 11 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:57:10,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 109 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:57:10,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2023-11-29 00:57:10,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2023-11-29 00:57:10,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 26 states have (on average 1.3846153846153846) internal successors, (36), 31 states have internal predecessors, (36), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-29 00:57:10,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 50 transitions. [2023-11-29 00:57:10,439 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 50 transitions. Word has length 24 [2023-11-29 00:57:10,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:57:10,441 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 50 transitions. [2023-11-29 00:57:10,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-29 00:57:10,441 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 50 transitions. [2023-11-29 00:57:10,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-29 00:57:10,442 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:57:10,443 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:57:10,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 00:57:10,443 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 00:57:10,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:57:10,444 INFO L85 PathProgramCache]: Analyzing trace with hash -254797239, now seen corresponding path program 1 times [2023-11-29 00:57:10,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:57:10,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107691971] [2023-11-29 00:57:10,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:57:10,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:57:10,464 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:57:10,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [442731524] [2023-11-29 00:57:10,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:57:10,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:57:10,465 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:57:10,472 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:57:10,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 00:57:10,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:57:10,544 INFO L262 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 00:57:10,550 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:57:10,654 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-29 00:57:10,655 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:57:10,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:57:10,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107691971] [2023-11-29 00:57:10,655 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:57:10,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [442731524] [2023-11-29 00:57:10,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [442731524] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:57:10,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:57:10,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 00:57:10,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898389368] [2023-11-29 00:57:10,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:57:10,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 00:57:10,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:57:10,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 00:57:10,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 00:57:10,658 INFO L87 Difference]: Start difference. First operand 41 states and 50 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 00:57:10,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:57:10,751 INFO L93 Difference]: Finished difference Result 61 states and 73 transitions. [2023-11-29 00:57:10,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 00:57:10,752 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 34 [2023-11-29 00:57:10,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:57:10,754 INFO L225 Difference]: With dead ends: 61 [2023-11-29 00:57:10,754 INFO L226 Difference]: Without dead ends: 60 [2023-11-29 00:57:10,754 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-11-29 00:57:10,756 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 30 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:57:10,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 134 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:57:10,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2023-11-29 00:57:10,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 54. [2023-11-29 00:57:10,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 36 states have (on average 1.3611111111111112) internal successors, (49), 41 states have internal predecessors, (49), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-29 00:57:10,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 67 transitions. [2023-11-29 00:57:10,768 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 67 transitions. Word has length 34 [2023-11-29 00:57:10,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:57:10,768 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 67 transitions. [2023-11-29 00:57:10,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 00:57:10,769 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 67 transitions. [2023-11-29 00:57:10,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-11-29 00:57:10,770 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:57:10,770 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:57:10,777 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 00:57:10,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:57:10,976 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 00:57:10,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:57:10,976 INFO L85 PathProgramCache]: Analyzing trace with hash 691220249, now seen corresponding path program 1 times [2023-11-29 00:57:10,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:57:10,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808961230] [2023-11-29 00:57:10,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:57:10,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:57:10,992 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:57:10,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2089773463] [2023-11-29 00:57:10,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:57:10,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:57:10,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:57:10,994 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:57:11,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 00:57:11,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:57:11,051 INFO L262 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 00:57:11,054 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:57:11,127 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-29 00:57:11,127 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:57:11,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:57:11,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808961230] [2023-11-29 00:57:11,127 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:57:11,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2089773463] [2023-11-29 00:57:11,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2089773463] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:57:11,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:57:11,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 00:57:11,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94028993] [2023-11-29 00:57:11,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:57:11,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 00:57:11,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:57:11,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 00:57:11,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 00:57:11,130 INFO L87 Difference]: Start difference. First operand 54 states and 67 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 00:57:11,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:57:11,208 INFO L93 Difference]: Finished difference Result 90 states and 110 transitions. [2023-11-29 00:57:11,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 00:57:11,208 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 35 [2023-11-29 00:57:11,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:57:11,211 INFO L225 Difference]: With dead ends: 90 [2023-11-29 00:57:11,211 INFO L226 Difference]: Without dead ends: 62 [2023-11-29 00:57:11,212 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-29 00:57:11,213 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 8 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:57:11,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 140 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:57:11,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2023-11-29 00:57:11,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2023-11-29 00:57:11,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 43 states have (on average 1.302325581395349) internal successors, (56), 48 states have internal predecessors, (56), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-29 00:57:11,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 74 transitions. [2023-11-29 00:57:11,226 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 74 transitions. Word has length 35 [2023-11-29 00:57:11,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:57:11,227 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 74 transitions. [2023-11-29 00:57:11,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 00:57:11,227 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 74 transitions. [2023-11-29 00:57:11,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-11-29 00:57:11,229 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:57:11,229 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:57:11,235 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-29 00:57:11,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:57:11,433 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 00:57:11,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:57:11,433 INFO L85 PathProgramCache]: Analyzing trace with hash 1149535416, now seen corresponding path program 1 times [2023-11-29 00:57:11,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:57:11,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651122878] [2023-11-29 00:57:11,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:57:11,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:57:11,445 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:57:11,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1243941341] [2023-11-29 00:57:11,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:57:11,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:57:11,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:57:11,447 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:57:11,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 00:57:11,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:57:11,503 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 00:57:11,506 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:57:11,609 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-29 00:57:11,609 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:57:11,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:57:11,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651122878] [2023-11-29 00:57:11,609 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:57:11,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1243941341] [2023-11-29 00:57:11,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1243941341] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:57:11,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:57:11,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 00:57:11,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851434264] [2023-11-29 00:57:11,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:57:11,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 00:57:11,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:57:11,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 00:57:11,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-29 00:57:11,613 INFO L87 Difference]: Start difference. First operand 62 states and 74 transitions. Second operand has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-29 00:57:11,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:57:11,777 INFO L93 Difference]: Finished difference Result 70 states and 82 transitions. [2023-11-29 00:57:11,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 00:57:11,778 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 44 [2023-11-29 00:57:11,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:57:11,780 INFO L225 Difference]: With dead ends: 70 [2023-11-29 00:57:11,780 INFO L226 Difference]: Without dead ends: 67 [2023-11-29 00:57:11,780 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2023-11-29 00:57:11,781 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 57 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:57:11,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 124 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:57:11,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2023-11-29 00:57:11,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 63. [2023-11-29 00:57:11,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 46 states have (on average 1.2173913043478262) internal successors, (56), 48 states have internal predecessors, (56), 9 states have call successors, (9), 5 states have call predecessors, (9), 5 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-29 00:57:11,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 74 transitions. [2023-11-29 00:57:11,792 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 74 transitions. Word has length 44 [2023-11-29 00:57:11,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:57:11,793 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 74 transitions. [2023-11-29 00:57:11,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-29 00:57:11,793 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 74 transitions. [2023-11-29 00:57:11,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-29 00:57:11,794 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:57:11,795 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:57:11,799 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-29 00:57:11,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:57:11,997 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 00:57:11,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:57:11,997 INFO L85 PathProgramCache]: Analyzing trace with hash 1275859616, now seen corresponding path program 1 times [2023-11-29 00:57:11,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:57:11,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536365211] [2023-11-29 00:57:11,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:57:11,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:57:12,011 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:57:12,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1976148955] [2023-11-29 00:57:12,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:57:12,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:57:12,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:57:12,013 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:57:12,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 00:57:12,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:57:12,069 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 00:57:12,071 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:57:12,172 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-29 00:57:12,172 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:57:12,300 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-29 00:57:12,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:57:12,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536365211] [2023-11-29 00:57:12,300 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:57:12,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1976148955] [2023-11-29 00:57:12,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1976148955] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 00:57:12,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 00:57:12,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 13 [2023-11-29 00:57:12,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311352467] [2023-11-29 00:57:12,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:57:12,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 00:57:12,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:57:12,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 00:57:12,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2023-11-29 00:57:12,303 INFO L87 Difference]: Start difference. First operand 63 states and 74 transitions. Second operand has 8 states, 7 states have (on average 3.0) internal successors, (21), 8 states have internal predecessors, (21), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-29 00:57:12,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:57:12,427 INFO L93 Difference]: Finished difference Result 77 states and 89 transitions. [2023-11-29 00:57:12,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 00:57:12,428 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 8 states have internal predecessors, (21), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 45 [2023-11-29 00:57:12,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:57:12,429 INFO L225 Difference]: With dead ends: 77 [2023-11-29 00:57:12,429 INFO L226 Difference]: Without dead ends: 76 [2023-11-29 00:57:12,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2023-11-29 00:57:12,431 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 33 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:57:12,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 162 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:57:12,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2023-11-29 00:57:12,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 72. [2023-11-29 00:57:12,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 53 states have (on average 1.2075471698113207) internal successors, (64), 55 states have internal predecessors, (64), 10 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-29 00:57:12,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 84 transitions. [2023-11-29 00:57:12,443 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 84 transitions. Word has length 45 [2023-11-29 00:57:12,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:57:12,443 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 84 transitions. [2023-11-29 00:57:12,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 8 states have internal predecessors, (21), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-29 00:57:12,443 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 84 transitions. [2023-11-29 00:57:12,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-29 00:57:12,444 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:57:12,445 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:57:12,450 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 00:57:12,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-29 00:57:12,649 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 00:57:12,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:57:12,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1275897352, now seen corresponding path program 1 times [2023-11-29 00:57:12,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:57:12,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611398140] [2023-11-29 00:57:12,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:57:12,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:57:12,662 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:57:12,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [539952541] [2023-11-29 00:57:12,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:57:12,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:57:12,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:57:12,663 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:57:12,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 00:57:12,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:57:12,716 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 00:57:12,719 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:57:12,808 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-29 00:57:12,808 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:57:12,904 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-29 00:57:12,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:57:12,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611398140] [2023-11-29 00:57:12,905 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:57:12,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [539952541] [2023-11-29 00:57:12,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [539952541] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:57:12,905 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:57:12,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 13 [2023-11-29 00:57:12,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739033553] [2023-11-29 00:57:12,906 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:57:12,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 00:57:12,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:57:12,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 00:57:12,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2023-11-29 00:57:12,908 INFO L87 Difference]: Start difference. First operand 72 states and 84 transitions. Second operand has 14 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 14 states have internal predecessors, (45), 6 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2023-11-29 00:57:13,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:57:13,086 INFO L93 Difference]: Finished difference Result 132 states and 156 transitions. [2023-11-29 00:57:13,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 00:57:13,089 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 14 states have internal predecessors, (45), 6 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) Word has length 45 [2023-11-29 00:57:13,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:57:13,090 INFO L225 Difference]: With dead ends: 132 [2023-11-29 00:57:13,091 INFO L226 Difference]: Without dead ends: 103 [2023-11-29 00:57:13,092 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=142, Invalid=364, Unknown=0, NotChecked=0, Total=506 [2023-11-29 00:57:13,093 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 70 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:57:13,093 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 217 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:57:13,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2023-11-29 00:57:13,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 95. [2023-11-29 00:57:13,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 72 states have (on average 1.1944444444444444) internal successors, (86), 74 states have internal predecessors, (86), 12 states have call successors, (12), 8 states have call predecessors, (12), 8 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-29 00:57:13,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 110 transitions. [2023-11-29 00:57:13,105 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 110 transitions. Word has length 45 [2023-11-29 00:57:13,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:57:13,106 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 110 transitions. [2023-11-29 00:57:13,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 14 states have internal predecessors, (45), 6 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2023-11-29 00:57:13,106 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 110 transitions. [2023-11-29 00:57:13,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-11-29 00:57:13,107 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:57:13,107 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:57:13,113 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 00:57:13,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:57:13,313 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 00:57:13,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:57:13,313 INFO L85 PathProgramCache]: Analyzing trace with hash 1823196049, now seen corresponding path program 1 times [2023-11-29 00:57:13,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:57:13,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126340177] [2023-11-29 00:57:13,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:57:13,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:57:13,326 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:57:13,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1342123464] [2023-11-29 00:57:13,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:57:13,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:57:13,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:57:13,328 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:57:13,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 00:57:13,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:57:13,381 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 00:57:13,383 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:57:13,481 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-29 00:57:13,481 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:57:13,584 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-29 00:57:13,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:57:13,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126340177] [2023-11-29 00:57:13,584 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:57:13,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1342123464] [2023-11-29 00:57:13,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1342123464] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 00:57:13,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 00:57:13,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 14 [2023-11-29 00:57:13,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056296290] [2023-11-29 00:57:13,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:57:13,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 00:57:13,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:57:13,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 00:57:13,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2023-11-29 00:57:13,586 INFO L87 Difference]: Start difference. First operand 95 states and 110 transitions. Second operand has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-29 00:57:13,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:57:13,710 INFO L93 Difference]: Finished difference Result 125 states and 146 transitions. [2023-11-29 00:57:13,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 00:57:13,711 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 49 [2023-11-29 00:57:13,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:57:13,712 INFO L225 Difference]: With dead ends: 125 [2023-11-29 00:57:13,712 INFO L226 Difference]: Without dead ends: 96 [2023-11-29 00:57:13,713 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2023-11-29 00:57:13,714 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 41 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:57:13,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 153 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:57:13,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2023-11-29 00:57:13,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2023-11-29 00:57:13,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 73 states have (on average 1.1917808219178083) internal successors, (87), 75 states have internal predecessors, (87), 12 states have call successors, (12), 8 states have call predecessors, (12), 8 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-29 00:57:13,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 111 transitions. [2023-11-29 00:57:13,725 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 111 transitions. Word has length 49 [2023-11-29 00:57:13,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:57:13,726 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 111 transitions. [2023-11-29 00:57:13,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-29 00:57:13,726 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 111 transitions. [2023-11-29 00:57:13,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-29 00:57:13,727 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:57:13,728 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:57:13,734 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 00:57:13,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:57:13,933 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 00:57:13,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:57:13,933 INFO L85 PathProgramCache]: Analyzing trace with hash 922590293, now seen corresponding path program 1 times [2023-11-29 00:57:13,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:57:13,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949435449] [2023-11-29 00:57:13,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:57:13,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:57:13,941 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:57:13,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [137621357] [2023-11-29 00:57:13,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:57:13,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:57:13,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:57:13,943 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:57:13,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 00:57:13,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:57:13,994 INFO L262 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 00:57:13,996 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:57:14,081 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-29 00:57:14,081 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:57:14,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:57:14,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949435449] [2023-11-29 00:57:14,082 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:57:14,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [137621357] [2023-11-29 00:57:14,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [137621357] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:57:14,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:57:14,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 00:57:14,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603451652] [2023-11-29 00:57:14,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:57:14,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:57:14,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:57:14,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:57:14,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:57:14,084 INFO L87 Difference]: Start difference. First operand 96 states and 111 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-29 00:57:14,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:57:14,133 INFO L93 Difference]: Finished difference Result 167 states and 201 transitions. [2023-11-29 00:57:14,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:57:14,134 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 55 [2023-11-29 00:57:14,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:57:14,136 INFO L225 Difference]: With dead ends: 167 [2023-11-29 00:57:14,136 INFO L226 Difference]: Without dead ends: 138 [2023-11-29 00:57:14,136 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:57:14,137 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 28 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:57:14,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 156 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:57:14,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2023-11-29 00:57:14,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 120. [2023-11-29 00:57:14,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 93 states have (on average 1.2365591397849462) internal successors, (115), 95 states have internal predecessors, (115), 16 states have call successors, (16), 8 states have call predecessors, (16), 8 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-29 00:57:14,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 147 transitions. [2023-11-29 00:57:14,153 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 147 transitions. Word has length 55 [2023-11-29 00:57:14,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:57:14,153 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 147 transitions. [2023-11-29 00:57:14,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-29 00:57:14,153 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 147 transitions. [2023-11-29 00:57:14,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-29 00:57:14,154 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:57:14,155 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:57:14,169 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 00:57:14,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:57:14,370 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 00:57:14,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:57:14,370 INFO L85 PathProgramCache]: Analyzing trace with hash 922691581, now seen corresponding path program 1 times [2023-11-29 00:57:14,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:57:14,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507158294] [2023-11-29 00:57:14,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:57:14,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:57:14,378 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:57:14,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [402025909] [2023-11-29 00:57:14,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:57:14,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:57:14,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:57:14,379 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:57:14,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 00:57:14,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:57:14,429 INFO L262 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 00:57:14,432 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:57:14,550 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-29 00:57:14,551 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:57:14,693 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-29 00:57:14,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:57:14,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507158294] [2023-11-29 00:57:14,694 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:57:14,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [402025909] [2023-11-29 00:57:14,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [402025909] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:57:14,694 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:57:14,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 17 [2023-11-29 00:57:14,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487332595] [2023-11-29 00:57:14,694 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:57:14,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 00:57:14,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:57:14,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 00:57:14,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2023-11-29 00:57:14,697 INFO L87 Difference]: Start difference. First operand 120 states and 147 transitions. Second operand has 18 states, 17 states have (on average 3.411764705882353) internal successors, (58), 18 states have internal predecessors, (58), 8 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (14), 8 states have call predecessors, (14), 8 states have call successors, (14) [2023-11-29 00:57:15,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:57:15,048 INFO L93 Difference]: Finished difference Result 242 states and 302 transitions. [2023-11-29 00:57:15,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-11-29 00:57:15,049 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.411764705882353) internal successors, (58), 18 states have internal predecessors, (58), 8 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (14), 8 states have call predecessors, (14), 8 states have call successors, (14) Word has length 55 [2023-11-29 00:57:15,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:57:15,051 INFO L225 Difference]: With dead ends: 242 [2023-11-29 00:57:15,051 INFO L226 Difference]: Without dead ends: 189 [2023-11-29 00:57:15,053 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=255, Invalid=935, Unknown=0, NotChecked=0, Total=1190 [2023-11-29 00:57:15,054 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 98 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:57:15,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 258 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:57:15,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2023-11-29 00:57:15,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 175. [2023-11-29 00:57:15,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 137 states have (on average 1.2043795620437956) internal successors, (165), 139 states have internal predecessors, (165), 22 states have call successors, (22), 13 states have call predecessors, (22), 13 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-11-29 00:57:15,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 209 transitions. [2023-11-29 00:57:15,074 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 209 transitions. Word has length 55 [2023-11-29 00:57:15,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:57:15,075 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 209 transitions. [2023-11-29 00:57:15,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.411764705882353) internal successors, (58), 18 states have internal predecessors, (58), 8 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (14), 8 states have call predecessors, (14), 8 states have call successors, (14) [2023-11-29 00:57:15,075 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 209 transitions. [2023-11-29 00:57:15,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-11-29 00:57:15,077 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:57:15,077 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:57:15,082 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 00:57:15,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-29 00:57:15,281 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 00:57:15,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:57:15,281 INFO L85 PathProgramCache]: Analyzing trace with hash 647425088, now seen corresponding path program 1 times [2023-11-29 00:57:15,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:57:15,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159068400] [2023-11-29 00:57:15,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:57:15,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:57:15,292 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:57:15,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [773306208] [2023-11-29 00:57:15,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:57:15,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:57:15,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:57:15,294 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:57:15,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 00:57:15,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:57:15,350 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 00:57:15,353 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:57:15,468 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 18 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-29 00:57:15,468 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:57:15,601 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-29 00:57:15,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:57:15,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159068400] [2023-11-29 00:57:15,601 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:57:15,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [773306208] [2023-11-29 00:57:15,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [773306208] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:57:15,602 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:57:15,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2023-11-29 00:57:15,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087957489] [2023-11-29 00:57:15,602 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:57:15,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 00:57:15,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:57:15,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 00:57:15,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2023-11-29 00:57:15,604 INFO L87 Difference]: Start difference. First operand 175 states and 209 transitions. Second operand has 18 states, 18 states have (on average 3.5) internal successors, (63), 18 states have internal predecessors, (63), 8 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (14), 8 states have call predecessors, (14), 8 states have call successors, (14) [2023-11-29 00:57:15,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:57:15,946 INFO L93 Difference]: Finished difference Result 296 states and 364 transitions. [2023-11-29 00:57:15,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-11-29 00:57:15,947 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.5) internal successors, (63), 18 states have internal predecessors, (63), 8 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (14), 8 states have call predecessors, (14), 8 states have call successors, (14) Word has length 59 [2023-11-29 00:57:15,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:57:15,949 INFO L225 Difference]: With dead ends: 296 [2023-11-29 00:57:15,949 INFO L226 Difference]: Without dead ends: 243 [2023-11-29 00:57:15,951 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=282, Invalid=1050, Unknown=0, NotChecked=0, Total=1332 [2023-11-29 00:57:15,951 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 77 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:57:15,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 295 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:57:15,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2023-11-29 00:57:15,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 230. [2023-11-29 00:57:15,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 182 states have (on average 1.1703296703296704) internal successors, (213), 184 states have internal predecessors, (213), 27 states have call successors, (27), 18 states have call predecessors, (27), 18 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-11-29 00:57:15,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 267 transitions. [2023-11-29 00:57:15,967 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 267 transitions. Word has length 59 [2023-11-29 00:57:15,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:57:15,967 INFO L495 AbstractCegarLoop]: Abstraction has 230 states and 267 transitions. [2023-11-29 00:57:15,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.5) internal successors, (63), 18 states have internal predecessors, (63), 8 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (14), 8 states have call predecessors, (14), 8 states have call successors, (14) [2023-11-29 00:57:15,967 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 267 transitions. [2023-11-29 00:57:15,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-29 00:57:15,969 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:57:15,969 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:57:15,974 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 00:57:16,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:57:16,172 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 00:57:16,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:57:16,173 INFO L85 PathProgramCache]: Analyzing trace with hash -1119170293, now seen corresponding path program 1 times [2023-11-29 00:57:16,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:57:16,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139254599] [2023-11-29 00:57:16,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:57:16,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:57:16,184 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:57:16,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [862958793] [2023-11-29 00:57:16,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:57:16,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:57:16,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:57:16,185 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:57:16,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 00:57:16,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:57:16,238 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 00:57:16,240 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:57:16,392 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 3 proven. 38 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-29 00:57:16,392 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:57:16,562 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 3 proven. 14 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-11-29 00:57:16,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:57:16,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139254599] [2023-11-29 00:57:16,563 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:57:16,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [862958793] [2023-11-29 00:57:16,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [862958793] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:57:16,563 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:57:16,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 22 [2023-11-29 00:57:16,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354671351] [2023-11-29 00:57:16,564 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:57:16,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-29 00:57:16,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:57:16,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-29 00:57:16,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=359, Unknown=0, NotChecked=0, Total=462 [2023-11-29 00:57:16,566 INFO L87 Difference]: Start difference. First operand 230 states and 267 transitions. Second operand has 22 states, 22 states have (on average 3.4545454545454546) internal successors, (76), 22 states have internal predecessors, (76), 10 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 10 states have call predecessors, (16), 10 states have call successors, (16) [2023-11-29 00:57:16,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:57:16,966 INFO L93 Difference]: Finished difference Result 366 states and 435 transitions. [2023-11-29 00:57:16,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-11-29 00:57:16,966 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.4545454545454546) internal successors, (76), 22 states have internal predecessors, (76), 10 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 10 states have call predecessors, (16), 10 states have call successors, (16) Word has length 69 [2023-11-29 00:57:16,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:57:16,969 INFO L225 Difference]: With dead ends: 366 [2023-11-29 00:57:16,969 INFO L226 Difference]: Without dead ends: 300 [2023-11-29 00:57:16,970 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 362 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=410, Invalid=1482, Unknown=0, NotChecked=0, Total=1892 [2023-11-29 00:57:16,971 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 135 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:57:16,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 336 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:57:16,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2023-11-29 00:57:16,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 276. [2023-11-29 00:57:16,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 218 states have (on average 1.1422018348623852) internal successors, (249), 221 states have internal predecessors, (249), 32 states have call successors, (32), 23 states have call predecessors, (32), 23 states have return successors, (32), 31 states have call predecessors, (32), 32 states have call successors, (32) [2023-11-29 00:57:16,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 313 transitions. [2023-11-29 00:57:16,990 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 313 transitions. Word has length 69 [2023-11-29 00:57:16,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:57:16,990 INFO L495 AbstractCegarLoop]: Abstraction has 276 states and 313 transitions. [2023-11-29 00:57:16,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.4545454545454546) internal successors, (76), 22 states have internal predecessors, (76), 10 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 10 states have call predecessors, (16), 10 states have call successors, (16) [2023-11-29 00:57:16,990 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 313 transitions. [2023-11-29 00:57:16,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-11-29 00:57:16,992 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:57:16,992 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:57:16,997 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-29 00:57:17,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-29 00:57:17,193 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 00:57:17,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:57:17,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1521044513, now seen corresponding path program 1 times [2023-11-29 00:57:17,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:57:17,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75835071] [2023-11-29 00:57:17,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:57:17,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:57:17,203 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:57:17,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1195503586] [2023-11-29 00:57:17,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:57:17,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:57:17,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:57:17,204 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:57:17,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 00:57:17,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:57:17,256 INFO L262 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 00:57:17,257 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:57:17,386 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-29 00:57:17,386 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:57:17,562 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-11-29 00:57:17,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:57:17,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75835071] [2023-11-29 00:57:17,562 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:57:17,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1195503586] [2023-11-29 00:57:17,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1195503586] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:57:17,562 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:57:17,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 25 [2023-11-29 00:57:17,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488143090] [2023-11-29 00:57:17,563 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:57:17,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-29 00:57:17,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:57:17,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-29 00:57:17,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=517, Unknown=0, NotChecked=0, Total=650 [2023-11-29 00:57:17,565 INFO L87 Difference]: Start difference. First operand 276 states and 313 transitions. Second operand has 26 states, 25 states have (on average 3.36) internal successors, (84), 26 states have internal predecessors, (84), 12 states have call successors, (18), 7 states have call predecessors, (18), 7 states have return successors, (18), 12 states have call predecessors, (18), 12 states have call successors, (18) [2023-11-29 00:57:18,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:57:18,001 INFO L93 Difference]: Finished difference Result 399 states and 455 transitions. [2023-11-29 00:57:18,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-11-29 00:57:18,005 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 3.36) internal successors, (84), 26 states have internal predecessors, (84), 12 states have call successors, (18), 7 states have call predecessors, (18), 7 states have return successors, (18), 12 states have call predecessors, (18), 12 states have call successors, (18) Word has length 75 [2023-11-29 00:57:18,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:57:18,008 INFO L225 Difference]: With dead ends: 399 [2023-11-29 00:57:18,008 INFO L226 Difference]: Without dead ends: 396 [2023-11-29 00:57:18,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 588 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=542, Invalid=2214, Unknown=0, NotChecked=0, Total=2756 [2023-11-29 00:57:18,010 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 135 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 00:57:18,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 321 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 00:57:18,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2023-11-29 00:57:18,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 367. [2023-11-29 00:57:18,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 293 states have (on average 1.1433447098976108) internal successors, (335), 295 states have internal predecessors, (335), 40 states have call successors, (40), 31 states have call predecessors, (40), 31 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-11-29 00:57:18,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 415 transitions. [2023-11-29 00:57:18,039 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 415 transitions. Word has length 75 [2023-11-29 00:57:18,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:57:18,039 INFO L495 AbstractCegarLoop]: Abstraction has 367 states and 415 transitions. [2023-11-29 00:57:18,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 3.36) internal successors, (84), 26 states have internal predecessors, (84), 12 states have call successors, (18), 7 states have call predecessors, (18), 7 states have return successors, (18), 12 states have call predecessors, (18), 12 states have call successors, (18) [2023-11-29 00:57:18,040 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 415 transitions. [2023-11-29 00:57:18,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-11-29 00:57:18,041 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:57:18,041 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:57:18,046 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 00:57:18,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:57:18,242 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 00:57:18,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:57:18,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1835593131, now seen corresponding path program 2 times [2023-11-29 00:57:18,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:57:18,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266094264] [2023-11-29 00:57:18,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:57:18,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:57:18,252 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:57:18,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1633239657] [2023-11-29 00:57:18,253 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 00:57:18,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:57:18,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:57:18,254 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:57:18,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 00:57:18,319 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 00:57:18,319 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:57:18,320 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 00:57:18,322 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:57:18,463 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 88 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-29 00:57:18,463 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:57:18,639 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-11-29 00:57:18,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:57:18,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266094264] [2023-11-29 00:57:18,639 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:57:18,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1633239657] [2023-11-29 00:57:18,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1633239657] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:57:18,640 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:57:18,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 25 [2023-11-29 00:57:18,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704589944] [2023-11-29 00:57:18,640 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:57:18,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-29 00:57:18,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:57:18,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-29 00:57:18,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=489, Unknown=0, NotChecked=0, Total=650 [2023-11-29 00:57:18,642 INFO L87 Difference]: Start difference. First operand 367 states and 415 transitions. Second operand has 26 states, 25 states have (on average 3.36) internal successors, (84), 26 states have internal predecessors, (84), 12 states have call successors, (18), 7 states have call predecessors, (18), 7 states have return successors, (18), 12 states have call predecessors, (18), 12 states have call successors, (18) [2023-11-29 00:57:19,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:57:19,090 INFO L93 Difference]: Finished difference Result 499 states and 580 transitions. [2023-11-29 00:57:19,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-11-29 00:57:19,095 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 3.36) internal successors, (84), 26 states have internal predecessors, (84), 12 states have call successors, (18), 7 states have call predecessors, (18), 7 states have return successors, (18), 12 states have call predecessors, (18), 12 states have call successors, (18) Word has length 75 [2023-11-29 00:57:19,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:57:19,098 INFO L225 Difference]: With dead ends: 499 [2023-11-29 00:57:19,098 INFO L226 Difference]: Without dead ends: 446 [2023-11-29 00:57:19,099 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 395 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=622, Invalid=1540, Unknown=0, NotChecked=0, Total=2162 [2023-11-29 00:57:19,100 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 163 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:57:19,100 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 313 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:57:19,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2023-11-29 00:57:19,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 420. [2023-11-29 00:57:19,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 420 states, 336 states have (on average 1.1517857142857142) internal successors, (387), 338 states have internal predecessors, (387), 45 states have call successors, (45), 36 states have call predecessors, (45), 36 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2023-11-29 00:57:19,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 477 transitions. [2023-11-29 00:57:19,131 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 477 transitions. Word has length 75 [2023-11-29 00:57:19,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:57:19,132 INFO L495 AbstractCegarLoop]: Abstraction has 420 states and 477 transitions. [2023-11-29 00:57:19,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 3.36) internal successors, (84), 26 states have internal predecessors, (84), 12 states have call successors, (18), 7 states have call predecessors, (18), 7 states have return successors, (18), 12 states have call predecessors, (18), 12 states have call successors, (18) [2023-11-29 00:57:19,132 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 477 transitions. [2023-11-29 00:57:19,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-11-29 00:57:19,134 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:57:19,134 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:57:19,140 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-29 00:57:19,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:57:19,334 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 00:57:19,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:57:19,335 INFO L85 PathProgramCache]: Analyzing trace with hash 311378950, now seen corresponding path program 1 times [2023-11-29 00:57:19,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:57:19,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31478787] [2023-11-29 00:57:19,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:57:19,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:57:19,345 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:57:19,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1804280751] [2023-11-29 00:57:19,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:57:19,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:57:19,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:57:19,347 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:57:19,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 00:57:19,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:57:19,403 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 00:57:19,405 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:57:19,442 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2023-11-29 00:57:19,442 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:57:19,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:57:19,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31478787] [2023-11-29 00:57:19,443 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:57:19,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1804280751] [2023-11-29 00:57:19,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1804280751] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:57:19,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:57:19,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 00:57:19,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700571767] [2023-11-29 00:57:19,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:57:19,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:57:19,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:57:19,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:57:19,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:57:19,445 INFO L87 Difference]: Start difference. First operand 420 states and 477 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-29 00:57:19,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:57:19,492 INFO L93 Difference]: Finished difference Result 542 states and 631 transitions. [2023-11-29 00:57:19,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:57:19,493 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 85 [2023-11-29 00:57:19,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:57:19,495 INFO L225 Difference]: With dead ends: 542 [2023-11-29 00:57:19,495 INFO L226 Difference]: Without dead ends: 424 [2023-11-29 00:57:19,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:57:19,497 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 15 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:57:19,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 116 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:57:19,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2023-11-29 00:57:19,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 416. [2023-11-29 00:57:19,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 336 states have (on average 1.1636904761904763) internal successors, (391), 338 states have internal predecessors, (391), 44 states have call successors, (44), 33 states have call predecessors, (44), 33 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2023-11-29 00:57:19,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 479 transitions. [2023-11-29 00:57:19,529 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 479 transitions. Word has length 85 [2023-11-29 00:57:19,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:57:19,530 INFO L495 AbstractCegarLoop]: Abstraction has 416 states and 479 transitions. [2023-11-29 00:57:19,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-29 00:57:19,530 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 479 transitions. [2023-11-29 00:57:19,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-11-29 00:57:19,532 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:57:19,532 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:57:19,538 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-29 00:57:19,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-29 00:57:19,732 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 00:57:19,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:57:19,733 INFO L85 PathProgramCache]: Analyzing trace with hash 232682424, now seen corresponding path program 1 times [2023-11-29 00:57:19,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:57:19,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908238209] [2023-11-29 00:57:19,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:57:19,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:57:19,740 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:57:19,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [434658225] [2023-11-29 00:57:19,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:57:19,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:57:19,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:57:19,741 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:57:19,742 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 00:57:19,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:57:19,800 INFO L262 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 00:57:19,802 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:57:19,944 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-29 00:57:19,944 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:57:20,159 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-11-29 00:57:20,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:57:20,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908238209] [2023-11-29 00:57:20,160 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:57:20,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [434658225] [2023-11-29 00:57:20,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [434658225] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:57:20,160 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:57:20,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 29 [2023-11-29 00:57:20,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463650565] [2023-11-29 00:57:20,160 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:57:20,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-11-29 00:57:20,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:57:20,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-11-29 00:57:20,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=691, Unknown=0, NotChecked=0, Total=870 [2023-11-29 00:57:20,162 INFO L87 Difference]: Start difference. First operand 416 states and 479 transitions. Second operand has 30 states, 29 states have (on average 3.3448275862068964) internal successors, (97), 30 states have internal predecessors, (97), 14 states have call successors, (20), 8 states have call predecessors, (20), 8 states have return successors, (20), 14 states have call predecessors, (20), 14 states have call successors, (20) [2023-11-29 00:57:20,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:57:20,717 INFO L93 Difference]: Finished difference Result 657 states and 783 transitions. [2023-11-29 00:57:20,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2023-11-29 00:57:20,718 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 3.3448275862068964) internal successors, (97), 30 states have internal predecessors, (97), 14 states have call successors, (20), 8 states have call predecessors, (20), 8 states have return successors, (20), 14 states have call predecessors, (20), 14 states have call successors, (20) Word has length 85 [2023-11-29 00:57:20,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:57:20,721 INFO L225 Difference]: With dead ends: 657 [2023-11-29 00:57:20,721 INFO L226 Difference]: Without dead ends: 582 [2023-11-29 00:57:20,723 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 922 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=822, Invalid=3210, Unknown=0, NotChecked=0, Total=4032 [2023-11-29 00:57:20,723 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 186 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 00:57:20,723 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 320 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 00:57:20,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2023-11-29 00:57:20,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 537. [2023-11-29 00:57:20,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 433 states have (on average 1.1685912240184757) internal successors, (506), 435 states have internal predecessors, (506), 57 states have call successors, (57), 44 states have call predecessors, (57), 44 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2023-11-29 00:57:20,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 620 transitions. [2023-11-29 00:57:20,764 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 620 transitions. Word has length 85 [2023-11-29 00:57:20,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:57:20,765 INFO L495 AbstractCegarLoop]: Abstraction has 537 states and 620 transitions. [2023-11-29 00:57:20,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 3.3448275862068964) internal successors, (97), 30 states have internal predecessors, (97), 14 states have call successors, (20), 8 states have call predecessors, (20), 8 states have return successors, (20), 14 states have call predecessors, (20), 14 states have call successors, (20) [2023-11-29 00:57:20,765 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 620 transitions. [2023-11-29 00:57:20,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-11-29 00:57:20,767 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:57:20,767 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:57:20,774 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-29 00:57:20,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-29 00:57:20,968 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 00:57:20,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:57:20,968 INFO L85 PathProgramCache]: Analyzing trace with hash -881635891, now seen corresponding path program 2 times [2023-11-29 00:57:20,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:57:20,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274844245] [2023-11-29 00:57:20,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:57:20,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:57:20,975 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:57:20,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [23738938] [2023-11-29 00:57:20,976 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 00:57:20,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:57:20,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:57:20,977 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:57:20,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-29 00:57:21,041 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 00:57:21,041 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:57:21,042 INFO L262 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 00:57:21,044 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:57:21,209 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 3 proven. 120 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-29 00:57:21,209 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:57:21,428 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 3 proven. 60 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-11-29 00:57:21,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:57:21,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274844245] [2023-11-29 00:57:21,429 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:57:21,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [23738938] [2023-11-29 00:57:21,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [23738938] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:57:21,429 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:57:21,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16] total 30 [2023-11-29 00:57:21,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751057893] [2023-11-29 00:57:21,429 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:57:21,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-11-29 00:57:21,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:57:21,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-11-29 00:57:21,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=675, Unknown=0, NotChecked=0, Total=870 [2023-11-29 00:57:21,431 INFO L87 Difference]: Start difference. First operand 537 states and 620 transitions. Second operand has 30 states, 30 states have (on average 3.4) internal successors, (102), 30 states have internal predecessors, (102), 14 states have call successors, (20), 8 states have call predecessors, (20), 8 states have return successors, (20), 14 states have call predecessors, (20), 14 states have call successors, (20) [2023-11-29 00:57:22,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:57:22,063 INFO L93 Difference]: Finished difference Result 690 states and 814 transitions. [2023-11-29 00:57:22,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2023-11-29 00:57:22,064 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 3.4) internal successors, (102), 30 states have internal predecessors, (102), 14 states have call successors, (20), 8 states have call predecessors, (20), 8 states have return successors, (20), 14 states have call predecessors, (20), 14 states have call successors, (20) Word has length 89 [2023-11-29 00:57:22,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:57:22,068 INFO L225 Difference]: With dead ends: 690 [2023-11-29 00:57:22,068 INFO L226 Difference]: Without dead ends: 589 [2023-11-29 00:57:22,070 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 929 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=912, Invalid=3248, Unknown=0, NotChecked=0, Total=4160 [2023-11-29 00:57:22,071 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 219 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 00:57:22,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 296 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 00:57:22,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2023-11-29 00:57:22,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 576. [2023-11-29 00:57:22,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 466 states have (on average 1.150214592274678) internal successors, (536), 468 states have internal predecessors, (536), 60 states have call successors, (60), 47 states have call predecessors, (60), 47 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2023-11-29 00:57:22,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 656 transitions. [2023-11-29 00:57:22,114 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 656 transitions. Word has length 89 [2023-11-29 00:57:22,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:57:22,115 INFO L495 AbstractCegarLoop]: Abstraction has 576 states and 656 transitions. [2023-11-29 00:57:22,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 3.4) internal successors, (102), 30 states have internal predecessors, (102), 14 states have call successors, (20), 8 states have call predecessors, (20), 8 states have return successors, (20), 14 states have call predecessors, (20), 14 states have call successors, (20) [2023-11-29 00:57:22,115 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 656 transitions. [2023-11-29 00:57:22,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-11-29 00:57:22,117 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:57:22,117 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:57:22,123 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-29 00:57:22,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-29 00:57:22,321 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 00:57:22,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:57:22,321 INFO L85 PathProgramCache]: Analyzing trace with hash 1713654591, now seen corresponding path program 1 times [2023-11-29 00:57:22,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:57:22,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239077165] [2023-11-29 00:57:22,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:57:22,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:57:22,350 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:57:22,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1256233921] [2023-11-29 00:57:22,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:57:22,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:57:22,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:57:22,352 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:57:22,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-29 00:57:22,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:57:22,423 INFO L262 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 00:57:22,426 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:57:22,649 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 129 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-29 00:57:22,649 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:57:22,901 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2023-11-29 00:57:22,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:57:22,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239077165] [2023-11-29 00:57:22,901 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:57:22,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1256233921] [2023-11-29 00:57:22,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1256233921] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:57:22,902 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:57:22,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17] total 33 [2023-11-29 00:57:22,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111972607] [2023-11-29 00:57:22,902 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:57:22,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-11-29 00:57:22,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:57:22,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-11-29 00:57:22,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=225, Invalid=897, Unknown=0, NotChecked=0, Total=1122 [2023-11-29 00:57:22,904 INFO L87 Difference]: Start difference. First operand 576 states and 656 transitions. Second operand has 34 states, 33 states have (on average 3.3333333333333335) internal successors, (110), 34 states have internal predecessors, (110), 16 states have call successors, (22), 9 states have call predecessors, (22), 9 states have return successors, (22), 16 states have call predecessors, (22), 16 states have call successors, (22) [2023-11-29 00:57:23,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:57:23,621 INFO L93 Difference]: Finished difference Result 900 states and 1062 transitions. [2023-11-29 00:57:23,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2023-11-29 00:57:23,623 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 3.3333333333333335) internal successors, (110), 34 states have internal predecessors, (110), 16 states have call successors, (22), 9 states have call predecessors, (22), 9 states have return successors, (22), 16 states have call predecessors, (22), 16 states have call successors, (22) Word has length 95 [2023-11-29 00:57:23,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:57:23,627 INFO L225 Difference]: With dead ends: 900 [2023-11-29 00:57:23,628 INFO L226 Difference]: Without dead ends: 825 [2023-11-29 00:57:23,630 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1199 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=988, Invalid=4124, Unknown=0, NotChecked=0, Total=5112 [2023-11-29 00:57:23,631 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 172 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 00:57:23,631 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 446 Invalid, 446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 00:57:23,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 825 states. [2023-11-29 00:57:23,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 825 to 664. [2023-11-29 00:57:23,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 664 states, 541 states have (on average 1.1534195933456561) internal successors, (624), 543 states have internal predecessors, (624), 68 states have call successors, (68), 52 states have call predecessors, (68), 52 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) [2023-11-29 00:57:23,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 760 transitions. [2023-11-29 00:57:23,682 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 760 transitions. Word has length 95 [2023-11-29 00:57:23,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:57:23,683 INFO L495 AbstractCegarLoop]: Abstraction has 664 states and 760 transitions. [2023-11-29 00:57:23,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 3.3333333333333335) internal successors, (110), 34 states have internal predecessors, (110), 16 states have call successors, (22), 9 states have call predecessors, (22), 9 states have return successors, (22), 16 states have call predecessors, (22), 16 states have call successors, (22) [2023-11-29 00:57:23,683 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 760 transitions. [2023-11-29 00:57:23,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-11-29 00:57:23,685 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:57:23,685 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:57:23,691 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-11-29 00:57:23,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-29 00:57:23,886 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 00:57:23,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:57:23,886 INFO L85 PathProgramCache]: Analyzing trace with hash -1461261516, now seen corresponding path program 1 times [2023-11-29 00:57:23,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:57:23,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599277383] [2023-11-29 00:57:23,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:57:23,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:57:23,897 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:57:23,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1737501625] [2023-11-29 00:57:23,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:57:23,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:57:23,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:57:23,898 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:57:23,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-29 00:57:23,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:57:23,957 INFO L262 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 00:57:23,960 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:57:24,161 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 3 proven. 142 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-29 00:57:24,161 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:57:24,434 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 3 proven. 58 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2023-11-29 00:57:24,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:57:24,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599277383] [2023-11-29 00:57:24,434 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:57:24,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1737501625] [2023-11-29 00:57:24,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1737501625] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:57:24,435 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:57:24,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18] total 34 [2023-11-29 00:57:24,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808843987] [2023-11-29 00:57:24,435 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:57:24,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-11-29 00:57:24,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:57:24,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-11-29 00:57:24,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=237, Invalid=885, Unknown=0, NotChecked=0, Total=1122 [2023-11-29 00:57:24,437 INFO L87 Difference]: Start difference. First operand 664 states and 760 transitions. Second operand has 34 states, 34 states have (on average 3.3823529411764706) internal successors, (115), 34 states have internal predecessors, (115), 16 states have call successors, (22), 9 states have call predecessors, (22), 9 states have return successors, (22), 16 states have call predecessors, (22), 16 states have call successors, (22) [2023-11-29 00:57:25,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:57:25,770 INFO L93 Difference]: Finished difference Result 1085 states and 1264 transitions. [2023-11-29 00:57:25,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2023-11-29 00:57:25,771 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.3823529411764706) internal successors, (115), 34 states have internal predecessors, (115), 16 states have call successors, (22), 9 states have call predecessors, (22), 9 states have return successors, (22), 16 states have call predecessors, (22), 16 states have call successors, (22) Word has length 99 [2023-11-29 00:57:25,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:57:25,776 INFO L225 Difference]: With dead ends: 1085 [2023-11-29 00:57:25,776 INFO L226 Difference]: Without dead ends: 890 [2023-11-29 00:57:25,779 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1192 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1088, Invalid=4024, Unknown=0, NotChecked=0, Total=5112 [2023-11-29 00:57:25,780 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 199 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 433 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 00:57:25,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 433 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-29 00:57:25,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 890 states. [2023-11-29 00:57:25,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 890 to 768. [2023-11-29 00:57:25,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 768 states, 618 states have (on average 1.1294498381877023) internal successors, (698), 622 states have internal predecessors, (698), 81 states have call successors, (81), 66 states have call predecessors, (81), 66 states have return successors, (81), 79 states have call predecessors, (81), 81 states have call successors, (81) [2023-11-29 00:57:25,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 768 states to 768 states and 860 transitions. [2023-11-29 00:57:25,842 INFO L78 Accepts]: Start accepts. Automaton has 768 states and 860 transitions. Word has length 99 [2023-11-29 00:57:25,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:57:25,842 INFO L495 AbstractCegarLoop]: Abstraction has 768 states and 860 transitions. [2023-11-29 00:57:25,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.3823529411764706) internal successors, (115), 34 states have internal predecessors, (115), 16 states have call successors, (22), 9 states have call predecessors, (22), 9 states have return successors, (22), 16 states have call predecessors, (22), 16 states have call successors, (22) [2023-11-29 00:57:25,843 INFO L276 IsEmpty]: Start isEmpty. Operand 768 states and 860 transitions. [2023-11-29 00:57:25,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-11-29 00:57:25,845 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:57:25,845 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:57:25,851 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-29 00:57:26,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:57:26,046 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 00:57:26,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:57:26,046 INFO L85 PathProgramCache]: Analyzing trace with hash 2034881669, now seen corresponding path program 1 times [2023-11-29 00:57:26,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:57:26,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502220447] [2023-11-29 00:57:26,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:57:26,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:57:26,056 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:57:26,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1393834539] [2023-11-29 00:57:26,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:57:26,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:57:26,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:57:26,064 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:57:26,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-29 00:57:26,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:57:26,161 INFO L262 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 00:57:26,164 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:57:26,352 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 14 proven. 126 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-29 00:57:26,353 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:57:26,589 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 14 proven. 42 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2023-11-29 00:57:26,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:57:26,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502220447] [2023-11-29 00:57:26,590 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:57:26,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1393834539] [2023-11-29 00:57:26,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1393834539] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:57:26,590 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:57:26,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18] total 34 [2023-11-29 00:57:26,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574498242] [2023-11-29 00:57:26,590 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:57:26,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-11-29 00:57:26,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:57:26,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-11-29 00:57:26,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=225, Invalid=897, Unknown=0, NotChecked=0, Total=1122 [2023-11-29 00:57:26,593 INFO L87 Difference]: Start difference. First operand 768 states and 860 transitions. Second operand has 34 states, 34 states have (on average 3.5) internal successors, (119), 34 states have internal predecessors, (119), 16 states have call successors, (22), 9 states have call predecessors, (22), 9 states have return successors, (22), 16 states have call predecessors, (22), 16 states have call successors, (22) [2023-11-29 00:57:27,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:57:27,469 INFO L93 Difference]: Finished difference Result 1132 states and 1291 transitions. [2023-11-29 00:57:27,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2023-11-29 00:57:27,469 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.5) internal successors, (119), 34 states have internal predecessors, (119), 16 states have call successors, (22), 9 states have call predecessors, (22), 9 states have return successors, (22), 16 states have call predecessors, (22), 16 states have call successors, (22) Word has length 103 [2023-11-29 00:57:27,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:57:27,475 INFO L225 Difference]: With dead ends: 1132 [2023-11-29 00:57:27,475 INFO L226 Difference]: Without dead ends: 1034 [2023-11-29 00:57:27,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1106 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=952, Invalid=3878, Unknown=0, NotChecked=0, Total=4830 [2023-11-29 00:57:27,477 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 207 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 367 SdHoareTripleChecker+Invalid, 355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 00:57:27,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 367 Invalid, 355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 339 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 00:57:27,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1034 states. [2023-11-29 00:57:27,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1034 to 959. [2023-11-29 00:57:27,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 959 states, 772 states have (on average 1.1204663212435233) internal successors, (865), 776 states have internal predecessors, (865), 100 states have call successors, (100), 84 states have call predecessors, (100), 84 states have return successors, (100), 98 states have call predecessors, (100), 100 states have call successors, (100) [2023-11-29 00:57:27,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 959 states to 959 states and 1065 transitions. [2023-11-29 00:57:27,554 INFO L78 Accepts]: Start accepts. Automaton has 959 states and 1065 transitions. Word has length 103 [2023-11-29 00:57:27,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:57:27,554 INFO L495 AbstractCegarLoop]: Abstraction has 959 states and 1065 transitions. [2023-11-29 00:57:27,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.5) internal successors, (119), 34 states have internal predecessors, (119), 16 states have call successors, (22), 9 states have call predecessors, (22), 9 states have return successors, (22), 16 states have call predecessors, (22), 16 states have call successors, (22) [2023-11-29 00:57:27,555 INFO L276 IsEmpty]: Start isEmpty. Operand 959 states and 1065 transitions. [2023-11-29 00:57:27,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-11-29 00:57:27,557 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:57:27,557 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:57:27,563 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-11-29 00:57:27,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:57:27,759 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 00:57:27,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:57:27,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1923141084, now seen corresponding path program 2 times [2023-11-29 00:57:27,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:57:27,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708713020] [2023-11-29 00:57:27,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:57:27,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:57:27,769 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:57:27,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [685509838] [2023-11-29 00:57:27,769 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 00:57:27,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:57:27,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:57:27,770 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:57:27,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-29 00:57:27,846 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 00:57:27,846 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:57:27,848 INFO L262 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-29 00:57:27,851 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:57:28,037 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 3 proven. 166 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-29 00:57:28,037 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:57:28,332 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 3 proven. 54 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2023-11-29 00:57:28,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:57:28,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708713020] [2023-11-29 00:57:28,332 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:57:28,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [685509838] [2023-11-29 00:57:28,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [685509838] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:57:28,332 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:57:28,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 35 [2023-11-29 00:57:28,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992193085] [2023-11-29 00:57:28,333 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:57:28,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-11-29 00:57:28,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:57:28,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-11-29 00:57:28,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=243, Invalid=1017, Unknown=0, NotChecked=0, Total=1260 [2023-11-29 00:57:28,335 INFO L87 Difference]: Start difference. First operand 959 states and 1065 transitions. Second operand has 36 states, 35 states have (on average 3.3142857142857145) internal successors, (116), 36 states have internal predecessors, (116), 17 states have call successors, (20), 9 states have call predecessors, (20), 9 states have return successors, (20), 17 states have call predecessors, (20), 17 states have call successors, (20) [2023-11-29 00:57:29,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:57:29,111 INFO L93 Difference]: Finished difference Result 1327 states and 1503 transitions. [2023-11-29 00:57:29,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2023-11-29 00:57:29,111 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 3.3142857142857145) internal successors, (116), 36 states have internal predecessors, (116), 17 states have call successors, (20), 9 states have call predecessors, (20), 9 states have return successors, (20), 17 states have call predecessors, (20), 17 states have call successors, (20) Word has length 105 [2023-11-29 00:57:29,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:57:29,116 INFO L225 Difference]: With dead ends: 1327 [2023-11-29 00:57:29,116 INFO L226 Difference]: Without dead ends: 1318 [2023-11-29 00:57:29,118 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1513 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1224, Invalid=5096, Unknown=0, NotChecked=0, Total=6320 [2023-11-29 00:57:29,119 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 292 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 00:57:29,119 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [292 Valid, 328 Invalid, 411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 00:57:29,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1318 states. [2023-11-29 00:57:29,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1318 to 949. [2023-11-29 00:57:29,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 949 states, 761 states have (on average 1.1274638633377136) internal successors, (858), 766 states have internal predecessors, (858), 97 states have call successors, (97), 88 states have call predecessors, (97), 88 states have return successors, (97), 94 states have call predecessors, (97), 97 states have call successors, (97) [2023-11-29 00:57:29,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 949 states to 949 states and 1052 transitions. [2023-11-29 00:57:29,172 INFO L78 Accepts]: Start accepts. Automaton has 949 states and 1052 transitions. Word has length 105 [2023-11-29 00:57:29,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:57:29,173 INFO L495 AbstractCegarLoop]: Abstraction has 949 states and 1052 transitions. [2023-11-29 00:57:29,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 3.3142857142857145) internal successors, (116), 36 states have internal predecessors, (116), 17 states have call successors, (20), 9 states have call predecessors, (20), 9 states have return successors, (20), 17 states have call predecessors, (20), 17 states have call successors, (20) [2023-11-29 00:57:29,173 INFO L276 IsEmpty]: Start isEmpty. Operand 949 states and 1052 transitions. [2023-11-29 00:57:29,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-11-29 00:57:29,175 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:57:29,175 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:57:29,180 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-11-29 00:57:29,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:57:29,376 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 00:57:29,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:57:29,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1093118259, now seen corresponding path program 2 times [2023-11-29 00:57:29,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:57:29,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540343501] [2023-11-29 00:57:29,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:57:29,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:57:29,386 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:57:29,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [931614998] [2023-11-29 00:57:29,386 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 00:57:29,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:57:29,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:57:29,387 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:57:29,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-29 00:57:29,456 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 00:57:29,456 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:57:29,457 INFO L262 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-29 00:57:29,459 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:57:29,712 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-29 00:57:29,712 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:57:30,106 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2023-11-29 00:57:30,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:57:30,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540343501] [2023-11-29 00:57:30,106 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:57:30,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [931614998] [2023-11-29 00:57:30,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [931614998] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:57:30,107 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:57:30,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 21] total 41 [2023-11-29 00:57:30,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100528976] [2023-11-29 00:57:30,107 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:57:30,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-11-29 00:57:30,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:57:30,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-11-29 00:57:30,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=345, Invalid=1377, Unknown=0, NotChecked=0, Total=1722 [2023-11-29 00:57:30,110 INFO L87 Difference]: Start difference. First operand 949 states and 1052 transitions. Second operand has 42 states, 41 states have (on average 3.317073170731707) internal successors, (136), 42 states have internal predecessors, (136), 20 states have call successors, (26), 11 states have call predecessors, (26), 11 states have return successors, (26), 20 states have call predecessors, (26), 20 states have call successors, (26) [2023-11-29 00:57:31,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:57:31,063 INFO L93 Difference]: Finished difference Result 1591 states and 1795 transitions. [2023-11-29 00:57:31,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2023-11-29 00:57:31,064 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 41 states have (on average 3.317073170731707) internal successors, (136), 42 states have internal predecessors, (136), 20 states have call successors, (26), 11 states have call predecessors, (26), 11 states have return successors, (26), 20 states have call predecessors, (26), 20 states have call successors, (26) Word has length 115 [2023-11-29 00:57:31,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:57:31,070 INFO L225 Difference]: With dead ends: 1591 [2023-11-29 00:57:31,070 INFO L226 Difference]: Without dead ends: 1383 [2023-11-29 00:57:31,073 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2164 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1733, Invalid=6823, Unknown=0, NotChecked=0, Total=8556 [2023-11-29 00:57:31,074 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 344 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 00:57:31,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [344 Valid, 274 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 316 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 00:57:31,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1383 states. [2023-11-29 00:57:31,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1383 to 1155. [2023-11-29 00:57:31,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1155 states, 927 states have (on average 1.13915857605178) internal successors, (1056), 931 states have internal predecessors, (1056), 118 states have call successors, (118), 107 states have call predecessors, (118), 107 states have return successors, (118), 116 states have call predecessors, (118), 118 states have call successors, (118) [2023-11-29 00:57:31,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1155 states to 1155 states and 1292 transitions. [2023-11-29 00:57:31,140 INFO L78 Accepts]: Start accepts. Automaton has 1155 states and 1292 transitions. Word has length 115 [2023-11-29 00:57:31,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:57:31,140 INFO L495 AbstractCegarLoop]: Abstraction has 1155 states and 1292 transitions. [2023-11-29 00:57:31,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 41 states have (on average 3.317073170731707) internal successors, (136), 42 states have internal predecessors, (136), 20 states have call successors, (26), 11 states have call predecessors, (26), 11 states have return successors, (26), 20 states have call predecessors, (26), 20 states have call successors, (26) [2023-11-29 00:57:31,141 INFO L276 IsEmpty]: Start isEmpty. Operand 1155 states and 1292 transitions. [2023-11-29 00:57:31,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-11-29 00:57:31,142 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:57:31,143 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 7, 7, 7, 7, 7, 7, 6, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:57:31,152 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-11-29 00:57:31,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-11-29 00:57:31,343 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 00:57:31,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:57:31,343 INFO L85 PathProgramCache]: Analyzing trace with hash 733820978, now seen corresponding path program 3 times [2023-11-29 00:57:31,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:57:31,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458006340] [2023-11-29 00:57:31,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:57:31,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:57:31,354 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:57:31,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1988233490] [2023-11-29 00:57:31,354 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 00:57:31,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:57:31,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:57:31,355 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:57:31,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-29 00:57:31,409 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-29 00:57:31,409 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:57:31,410 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 00:57:31,412 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:57:31,437 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2023-11-29 00:57:31,437 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:57:31,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:57:31,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458006340] [2023-11-29 00:57:31,437 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:57:31,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1988233490] [2023-11-29 00:57:31,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1988233490] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:57:31,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:57:31,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 00:57:31,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614716533] [2023-11-29 00:57:31,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:57:31,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:57:31,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:57:31,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:57:31,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:57:31,439 INFO L87 Difference]: Start difference. First operand 1155 states and 1292 transitions. Second operand has 5 states, 4 states have (on average 8.25) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-29 00:57:31,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:57:31,549 INFO L93 Difference]: Finished difference Result 1174 states and 1310 transitions. [2023-11-29 00:57:31,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 00:57:31,549 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 8.25) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 125 [2023-11-29 00:57:31,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:57:31,555 INFO L225 Difference]: With dead ends: 1174 [2023-11-29 00:57:31,555 INFO L226 Difference]: Without dead ends: 1170 [2023-11-29 00:57:31,556 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:57:31,556 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 22 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:57:31,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 113 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:57:31,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1170 states. [2023-11-29 00:57:31,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1170 to 1133. [2023-11-29 00:57:31,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1133 states, 910 states have (on average 1.132967032967033) internal successors, (1031), 915 states have internal predecessors, (1031), 115 states have call successors, (115), 105 states have call predecessors, (115), 105 states have return successors, (115), 112 states have call predecessors, (115), 115 states have call successors, (115) [2023-11-29 00:57:31,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1133 states to 1133 states and 1261 transitions. [2023-11-29 00:57:31,656 INFO L78 Accepts]: Start accepts. Automaton has 1133 states and 1261 transitions. Word has length 125 [2023-11-29 00:57:31,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:57:31,657 INFO L495 AbstractCegarLoop]: Abstraction has 1133 states and 1261 transitions. [2023-11-29 00:57:31,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 8.25) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-29 00:57:31,657 INFO L276 IsEmpty]: Start isEmpty. Operand 1133 states and 1261 transitions. [2023-11-29 00:57:31,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-11-29 00:57:31,660 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:57:31,660 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 7, 7, 7, 6, 6, 6, 6, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:57:31,665 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-11-29 00:57:31,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-11-29 00:57:31,861 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 00:57:31,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:57:31,861 INFO L85 PathProgramCache]: Analyzing trace with hash -2057471331, now seen corresponding path program 2 times [2023-11-29 00:57:31,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:57:31,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687403345] [2023-11-29 00:57:31,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:57:31,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:57:31,870 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:57:31,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [42710184] [2023-11-29 00:57:31,870 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 00:57:31,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:57:31,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:57:31,872 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:57:31,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-29 00:57:31,949 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 00:57:31,949 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:57:31,950 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-29 00:57:31,953 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:57:32,222 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 3 proven. 312 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-29 00:57:32,222 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:57:32,609 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 3 proven. 132 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2023-11-29 00:57:32,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:57:32,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687403345] [2023-11-29 00:57:32,609 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:57:32,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [42710184] [2023-11-29 00:57:32,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [42710184] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:57:32,609 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:57:32,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 24] total 46 [2023-11-29 00:57:32,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107883275] [2023-11-29 00:57:32,610 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:57:32,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-11-29 00:57:32,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:57:32,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-11-29 00:57:32,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=427, Invalid=1643, Unknown=0, NotChecked=0, Total=2070 [2023-11-29 00:57:32,612 INFO L87 Difference]: Start difference. First operand 1133 states and 1261 transitions. Second operand has 46 states, 46 states have (on average 3.347826086956522) internal successors, (154), 46 states have internal predecessors, (154), 22 states have call successors, (28), 12 states have call predecessors, (28), 12 states have return successors, (28), 22 states have call predecessors, (28), 22 states have call successors, (28) [2023-11-29 00:57:33,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:57:33,604 INFO L93 Difference]: Finished difference Result 1791 states and 2019 transitions. [2023-11-29 00:57:33,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2023-11-29 00:57:33,605 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 3.347826086956522) internal successors, (154), 46 states have internal predecessors, (154), 22 states have call successors, (28), 12 states have call predecessors, (28), 12 states have return successors, (28), 22 states have call predecessors, (28), 22 states have call successors, (28) Word has length 129 [2023-11-29 00:57:33,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:57:33,610 INFO L225 Difference]: With dead ends: 1791 [2023-11-29 00:57:33,610 INFO L226 Difference]: Without dead ends: 1583 [2023-11-29 00:57:33,612 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2505 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=2098, Invalid=7802, Unknown=0, NotChecked=0, Total=9900 [2023-11-29 00:57:33,613 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 302 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 00:57:33,613 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [302 Valid, 481 Invalid, 438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 422 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 00:57:33,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1583 states. [2023-11-29 00:57:33,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1583 to 1104. [2023-11-29 00:57:33,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1104 states, 886 states have (on average 1.1331828442437923) internal successors, (1004), 890 states have internal predecessors, (1004), 112 states have call successors, (112), 103 states have call predecessors, (112), 103 states have return successors, (112), 110 states have call predecessors, (112), 112 states have call successors, (112) [2023-11-29 00:57:33,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1104 states to 1104 states and 1228 transitions. [2023-11-29 00:57:33,724 INFO L78 Accepts]: Start accepts. Automaton has 1104 states and 1228 transitions. Word has length 129 [2023-11-29 00:57:33,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:57:33,724 INFO L495 AbstractCegarLoop]: Abstraction has 1104 states and 1228 transitions. [2023-11-29 00:57:33,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 3.347826086956522) internal successors, (154), 46 states have internal predecessors, (154), 22 states have call successors, (28), 12 states have call predecessors, (28), 12 states have return successors, (28), 22 states have call predecessors, (28), 22 states have call successors, (28) [2023-11-29 00:57:33,725 INFO L276 IsEmpty]: Start isEmpty. Operand 1104 states and 1228 transitions. [2023-11-29 00:57:33,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-11-29 00:57:33,727 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:57:33,727 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:57:33,733 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-11-29 00:57:33,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-11-29 00:57:33,928 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 00:57:33,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:57:33,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1254255791, now seen corresponding path program 3 times [2023-11-29 00:57:33,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:57:33,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572470367] [2023-11-29 00:57:33,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:57:33,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:57:33,941 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:57:33,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [839684284] [2023-11-29 00:57:33,949 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 00:57:33,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:57:33,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:57:33,950 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:57:33,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-29 00:57:34,025 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-29 00:57:34,026 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:57:34,026 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 00:57:34,029 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:57:34,053 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 447 trivial. 0 not checked. [2023-11-29 00:57:34,053 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:57:34,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:57:34,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572470367] [2023-11-29 00:57:34,053 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:57:34,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [839684284] [2023-11-29 00:57:34,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [839684284] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:57:34,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:57:34,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 00:57:34,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841627107] [2023-11-29 00:57:34,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:57:34,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:57:34,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:57:34,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:57:34,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:57:34,055 INFO L87 Difference]: Start difference. First operand 1104 states and 1228 transitions. Second operand has 5 states, 4 states have (on average 6.75) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-29 00:57:34,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:57:34,197 INFO L93 Difference]: Finished difference Result 1108 states and 1231 transitions. [2023-11-29 00:57:34,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 00:57:34,197 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.75) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 135 [2023-11-29 00:57:34,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:57:34,203 INFO L225 Difference]: With dead ends: 1108 [2023-11-29 00:57:34,203 INFO L226 Difference]: Without dead ends: 1107 [2023-11-29 00:57:34,203 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:57:34,204 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 22 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:57:34,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 123 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:57:34,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1107 states. [2023-11-29 00:57:34,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1107 to 1103. [2023-11-29 00:57:34,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1103 states, 886 states have (on average 1.1320541760722347) internal successors, (1003), 889 states have internal predecessors, (1003), 112 states have call successors, (112), 103 states have call predecessors, (112), 103 states have return successors, (112), 110 states have call predecessors, (112), 112 states have call successors, (112) [2023-11-29 00:57:34,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1103 states to 1103 states and 1227 transitions. [2023-11-29 00:57:34,306 INFO L78 Accepts]: Start accepts. Automaton has 1103 states and 1227 transitions. Word has length 135 [2023-11-29 00:57:34,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:57:34,306 INFO L495 AbstractCegarLoop]: Abstraction has 1103 states and 1227 transitions. [2023-11-29 00:57:34,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.75) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-29 00:57:34,307 INFO L276 IsEmpty]: Start isEmpty. Operand 1103 states and 1227 transitions. [2023-11-29 00:57:34,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-11-29 00:57:34,310 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:57:34,310 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 7, 7, 7, 7, 7, 7, 6, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:57:34,315 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2023-11-29 00:57:34,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-29 00:57:34,511 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 00:57:34,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:57:34,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1593670850, now seen corresponding path program 3 times [2023-11-29 00:57:34,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:57:34,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000242607] [2023-11-29 00:57:34,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:57:34,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:57:34,523 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:57:34,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [692872932] [2023-11-29 00:57:34,523 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 00:57:34,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:57:34,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:57:34,524 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:57:34,525 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-11-29 00:57:34,588 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-29 00:57:34,588 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:57:34,589 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 00:57:34,592 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:57:34,630 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 60 proven. 1 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2023-11-29 00:57:34,630 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:57:34,713 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 382 trivial. 0 not checked. [2023-11-29 00:57:34,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:57:34,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000242607] [2023-11-29 00:57:34,714 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:57:34,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [692872932] [2023-11-29 00:57:34,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [692872932] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:57:34,714 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:57:34,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-11-29 00:57:34,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725345775] [2023-11-29 00:57:34,714 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:57:34,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 00:57:34,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:57:34,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 00:57:34,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2023-11-29 00:57:34,716 INFO L87 Difference]: Start difference. First operand 1103 states and 1227 transitions. Second operand has 12 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 12 states have internal predecessors, (47), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-29 00:57:34,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:57:34,936 INFO L93 Difference]: Finished difference Result 1132 states and 1258 transitions. [2023-11-29 00:57:34,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 00:57:34,936 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 12 states have internal predecessors, (47), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 139 [2023-11-29 00:57:34,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:57:34,941 INFO L225 Difference]: With dead ends: 1132 [2023-11-29 00:57:34,941 INFO L226 Difference]: Without dead ends: 1130 [2023-11-29 00:57:34,942 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2023-11-29 00:57:34,943 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 54 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:57:34,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 198 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:57:34,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1130 states. [2023-11-29 00:57:35,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1130 to 792. [2023-11-29 00:57:35,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 792 states, 636 states have (on average 1.130503144654088) internal successors, (719), 641 states have internal predecessors, (719), 81 states have call successors, (81), 73 states have call predecessors, (81), 73 states have return successors, (81), 77 states have call predecessors, (81), 81 states have call successors, (81) [2023-11-29 00:57:35,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 792 states to 792 states and 881 transitions. [2023-11-29 00:57:35,039 INFO L78 Accepts]: Start accepts. Automaton has 792 states and 881 transitions. Word has length 139 [2023-11-29 00:57:35,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:57:35,039 INFO L495 AbstractCegarLoop]: Abstraction has 792 states and 881 transitions. [2023-11-29 00:57:35,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 12 states have internal predecessors, (47), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-29 00:57:35,039 INFO L276 IsEmpty]: Start isEmpty. Operand 792 states and 881 transitions. [2023-11-29 00:57:35,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-11-29 00:57:35,042 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:57:35,042 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:57:35,047 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2023-11-29 00:57:35,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-29 00:57:35,242 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 00:57:35,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:57:35,243 INFO L85 PathProgramCache]: Analyzing trace with hash 359604448, now seen corresponding path program 1 times [2023-11-29 00:57:35,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:57:35,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731741380] [2023-11-29 00:57:35,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:57:35,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:57:35,253 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:57:35,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1442007654] [2023-11-29 00:57:35,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:57:35,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:57:35,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:57:35,255 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:57:35,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-11-29 00:57:35,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:57:35,337 INFO L262 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-29 00:57:35,340 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:57:35,632 INFO L134 CoverageAnalysis]: Checked inductivity of 554 backedges. 0 proven. 530 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-29 00:57:35,632 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:57:36,080 INFO L134 CoverageAnalysis]: Checked inductivity of 554 backedges. 0 proven. 310 refuted. 0 times theorem prover too weak. 244 trivial. 0 not checked. [2023-11-29 00:57:36,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:57:36,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731741380] [2023-11-29 00:57:36,080 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:57:36,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1442007654] [2023-11-29 00:57:36,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1442007654] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:57:36,080 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:57:36,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 26] total 50 [2023-11-29 00:57:36,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148205978] [2023-11-29 00:57:36,081 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:57:36,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-11-29 00:57:36,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:57:36,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-11-29 00:57:36,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=605, Invalid=1845, Unknown=0, NotChecked=0, Total=2450 [2023-11-29 00:57:36,082 INFO L87 Difference]: Start difference. First operand 792 states and 881 transitions. Second operand has 50 states, 50 states have (on average 3.34) internal successors, (167), 50 states have internal predecessors, (167), 24 states have call successors, (30), 13 states have call predecessors, (30), 13 states have return successors, (30), 24 states have call predecessors, (30), 24 states have call successors, (30) [2023-11-29 00:57:37,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:57:37,146 INFO L93 Difference]: Finished difference Result 1189 states and 1345 transitions. [2023-11-29 00:57:37,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2023-11-29 00:57:37,147 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 3.34) internal successors, (167), 50 states have internal predecessors, (167), 24 states have call successors, (30), 13 states have call predecessors, (30), 13 states have return successors, (30), 24 states have call predecessors, (30), 24 states have call successors, (30) Word has length 139 [2023-11-29 00:57:37,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:57:37,150 INFO L225 Difference]: With dead ends: 1189 [2023-11-29 00:57:37,151 INFO L226 Difference]: Without dead ends: 965 [2023-11-29 00:57:37,152 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1859 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=2662, Invalid=6268, Unknown=0, NotChecked=0, Total=8930 [2023-11-29 00:57:37,152 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 381 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 381 SdHoareTripleChecker+Valid, 515 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 00:57:37,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [381 Valid, 515 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 341 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 00:57:37,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 965 states. [2023-11-29 00:57:37,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 965 to 906. [2023-11-29 00:57:37,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 906 states, 728 states have (on average 1.129120879120879) internal successors, (822), 733 states have internal predecessors, (822), 92 states have call successors, (92), 84 states have call predecessors, (92), 84 states have return successors, (92), 88 states have call predecessors, (92), 92 states have call successors, (92) [2023-11-29 00:57:37,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 906 states to 906 states and 1006 transitions. [2023-11-29 00:57:37,239 INFO L78 Accepts]: Start accepts. Automaton has 906 states and 1006 transitions. Word has length 139 [2023-11-29 00:57:37,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:57:37,239 INFO L495 AbstractCegarLoop]: Abstraction has 906 states and 1006 transitions. [2023-11-29 00:57:37,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 3.34) internal successors, (167), 50 states have internal predecessors, (167), 24 states have call successors, (30), 13 states have call predecessors, (30), 13 states have return successors, (30), 24 states have call predecessors, (30), 24 states have call successors, (30) [2023-11-29 00:57:37,240 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states and 1006 transitions. [2023-11-29 00:57:37,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-11-29 00:57:37,242 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:57:37,242 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 11, 11, 10, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:57:37,248 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-11-29 00:57:37,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-29 00:57:37,443 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 00:57:37,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:57:37,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1015821130, now seen corresponding path program 1 times [2023-11-29 00:57:37,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:57:37,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110261047] [2023-11-29 00:57:37,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:57:37,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:57:37,456 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:57:37,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1049713017] [2023-11-29 00:57:37,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:57:37,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:57:37,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:57:37,457 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:57:37,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-11-29 00:57:37,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:57:37,550 INFO L262 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-29 00:57:37,554 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:57:37,910 INFO L134 CoverageAnalysis]: Checked inductivity of 618 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-29 00:57:37,911 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:57:38,464 INFO L134 CoverageAnalysis]: Checked inductivity of 618 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2023-11-29 00:57:38,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:57:38,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110261047] [2023-11-29 00:57:38,465 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:57:38,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1049713017] [2023-11-29 00:57:38,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1049713017] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:57:38,465 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:57:38,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 27] total 53 [2023-11-29 00:57:38,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372260503] [2023-11-29 00:57:38,465 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:57:38,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2023-11-29 00:57:38,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:57:38,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2023-11-29 00:57:38,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=663, Invalid=2199, Unknown=0, NotChecked=0, Total=2862 [2023-11-29 00:57:38,468 INFO L87 Difference]: Start difference. First operand 906 states and 1006 transitions. Second operand has 54 states, 53 states have (on average 3.30188679245283) internal successors, (175), 54 states have internal predecessors, (175), 26 states have call successors, (32), 14 states have call predecessors, (32), 14 states have return successors, (32), 26 states have call predecessors, (32), 26 states have call successors, (32) [2023-11-29 00:57:41,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:57:41,010 INFO L93 Difference]: Finished difference Result 1219 states and 1377 transitions. [2023-11-29 00:57:41,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2023-11-29 00:57:41,011 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 53 states have (on average 3.30188679245283) internal successors, (175), 54 states have internal predecessors, (175), 26 states have call successors, (32), 14 states have call predecessors, (32), 14 states have return successors, (32), 26 states have call predecessors, (32), 26 states have call successors, (32) Word has length 145 [2023-11-29 00:57:41,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:57:41,015 INFO L225 Difference]: With dead ends: 1219 [2023-11-29 00:57:41,015 INFO L226 Difference]: Without dead ends: 995 [2023-11-29 00:57:41,018 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3834 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=3498, Invalid=11754, Unknown=0, NotChecked=0, Total=15252 [2023-11-29 00:57:41,018 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 537 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 398 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 537 SdHoareTripleChecker+Valid, 408 SdHoareTripleChecker+Invalid, 458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-29 00:57:41,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [537 Valid, 408 Invalid, 458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 398 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-29 00:57:41,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 995 states. [2023-11-29 00:57:41,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 995 to 920. [2023-11-29 00:57:41,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 920 states, 738 states have (on average 1.1287262872628727) internal successors, (833), 744 states have internal predecessors, (833), 94 states have call successors, (94), 86 states have call predecessors, (94), 86 states have return successors, (94), 89 states have call predecessors, (94), 94 states have call successors, (94) [2023-11-29 00:57:41,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 920 states to 920 states and 1021 transitions. [2023-11-29 00:57:41,107 INFO L78 Accepts]: Start accepts. Automaton has 920 states and 1021 transitions. Word has length 145 [2023-11-29 00:57:41,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:57:41,107 INFO L495 AbstractCegarLoop]: Abstraction has 920 states and 1021 transitions. [2023-11-29 00:57:41,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 53 states have (on average 3.30188679245283) internal successors, (175), 54 states have internal predecessors, (175), 26 states have call successors, (32), 14 states have call predecessors, (32), 14 states have return successors, (32), 26 states have call predecessors, (32), 26 states have call successors, (32) [2023-11-29 00:57:41,107 INFO L276 IsEmpty]: Start isEmpty. Operand 920 states and 1021 transitions. [2023-11-29 00:57:41,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2023-11-29 00:57:41,110 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:57:41,110 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 10, 10, 10, 9, 9, 9, 8, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:57:41,116 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-11-29 00:57:41,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-29 00:57:41,311 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 00:57:41,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:57:41,311 INFO L85 PathProgramCache]: Analyzing trace with hash -531684882, now seen corresponding path program 1 times [2023-11-29 00:57:41,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:57:41,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328806539] [2023-11-29 00:57:41,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:57:41,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:57:41,321 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:57:41,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [434947220] [2023-11-29 00:57:41,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:57:41,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:57:41,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:57:41,322 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:57:41,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-11-29 00:57:41,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:57:41,395 INFO L262 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-29 00:57:41,398 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:57:41,733 INFO L134 CoverageAnalysis]: Checked inductivity of 606 backedges. 6 proven. 576 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-29 00:57:41,733 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:57:42,306 INFO L134 CoverageAnalysis]: Checked inductivity of 606 backedges. 6 proven. 264 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2023-11-29 00:57:42,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:57:42,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328806539] [2023-11-29 00:57:42,306 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:57:42,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [434947220] [2023-11-29 00:57:42,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [434947220] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:57:42,306 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:57:42,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 30] total 58 [2023-11-29 00:57:42,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627573305] [2023-11-29 00:57:42,307 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:57:42,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2023-11-29 00:57:42,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:57:42,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2023-11-29 00:57:42,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=693, Invalid=2613, Unknown=0, NotChecked=0, Total=3306 [2023-11-29 00:57:42,309 INFO L87 Difference]: Start difference. First operand 920 states and 1021 transitions. Second operand has 58 states, 58 states have (on average 3.3275862068965516) internal successors, (193), 58 states have internal predecessors, (193), 28 states have call successors, (34), 15 states have call predecessors, (34), 15 states have return successors, (34), 28 states have call predecessors, (34), 28 states have call successors, (34) [2023-11-29 00:57:44,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:57:44,828 INFO L93 Difference]: Finished difference Result 1614 states and 1813 transitions. [2023-11-29 00:57:44,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2023-11-29 00:57:44,829 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 3.3275862068965516) internal successors, (193), 58 states have internal predecessors, (193), 28 states have call successors, (34), 15 states have call predecessors, (34), 15 states have return successors, (34), 28 states have call predecessors, (34), 28 states have call successors, (34) Word has length 159 [2023-11-29 00:57:44,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:57:44,833 INFO L225 Difference]: With dead ends: 1614 [2023-11-29 00:57:44,834 INFO L226 Difference]: Without dead ends: 1390 [2023-11-29 00:57:44,835 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 260 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3857 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=3316, Invalid=11936, Unknown=0, NotChecked=0, Total=15252 [2023-11-29 00:57:44,836 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 487 mSDsluCounter, 512 mSDsCounter, 0 mSdLazyCounter, 487 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 487 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-29 00:57:44,836 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [487 Valid, 543 Invalid, 509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 487 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-29 00:57:44,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1390 states. [2023-11-29 00:57:44,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1390 to 1178. [2023-11-29 00:57:44,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1178 states, 944 states have (on average 1.1271186440677967) internal successors, (1064), 948 states have internal predecessors, (1064), 120 states have call successors, (120), 112 states have call predecessors, (120), 112 states have return successors, (120), 117 states have call predecessors, (120), 120 states have call successors, (120) [2023-11-29 00:57:44,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1178 states to 1178 states and 1304 transitions. [2023-11-29 00:57:44,923 INFO L78 Accepts]: Start accepts. Automaton has 1178 states and 1304 transitions. Word has length 159 [2023-11-29 00:57:44,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:57:44,923 INFO L495 AbstractCegarLoop]: Abstraction has 1178 states and 1304 transitions. [2023-11-29 00:57:44,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 3.3275862068965516) internal successors, (193), 58 states have internal predecessors, (193), 28 states have call successors, (34), 15 states have call predecessors, (34), 15 states have return successors, (34), 28 states have call predecessors, (34), 28 states have call successors, (34) [2023-11-29 00:57:44,924 INFO L276 IsEmpty]: Start isEmpty. Operand 1178 states and 1304 transitions. [2023-11-29 00:57:44,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2023-11-29 00:57:44,926 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:57:44,926 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 12, 12, 11, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:57:44,931 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2023-11-29 00:57:45,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-11-29 00:57:45,127 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 00:57:45,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:57:45,127 INFO L85 PathProgramCache]: Analyzing trace with hash 1103906774, now seen corresponding path program 3 times [2023-11-29 00:57:45,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:57:45,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182980803] [2023-11-29 00:57:45,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:57:45,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:57:45,139 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:57:45,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1480389873] [2023-11-29 00:57:45,140 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 00:57:45,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:57:45,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:57:45,141 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:57:45,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-11-29 00:57:45,201 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-29 00:57:45,201 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:57:45,202 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 00:57:45,205 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:57:45,235 INFO L134 CoverageAnalysis]: Checked inductivity of 735 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 651 trivial. 0 not checked. [2023-11-29 00:57:45,235 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:57:45,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:57:45,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182980803] [2023-11-29 00:57:45,235 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:57:45,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1480389873] [2023-11-29 00:57:45,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1480389873] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:57:45,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:57:45,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 00:57:45,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910121712] [2023-11-29 00:57:45,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:57:45,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 00:57:45,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:57:45,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 00:57:45,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:57:45,236 INFO L87 Difference]: Start difference. First operand 1178 states and 1304 transitions. Second operand has 7 states, 6 states have (on average 5.166666666666667) internal successors, (31), 7 states have internal predecessors, (31), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-29 00:57:45,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:57:45,612 INFO L93 Difference]: Finished difference Result 1214 states and 1337 transitions. [2023-11-29 00:57:45,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 00:57:45,612 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.166666666666667) internal successors, (31), 7 states have internal predecessors, (31), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 159 [2023-11-29 00:57:45,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:57:45,616 INFO L225 Difference]: With dead ends: 1214 [2023-11-29 00:57:45,616 INFO L226 Difference]: Without dead ends: 1212 [2023-11-29 00:57:45,617 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2023-11-29 00:57:45,617 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 34 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 00:57:45,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 144 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 00:57:45,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1212 states. [2023-11-29 00:57:45,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1212 to 879. [2023-11-29 00:57:45,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 879 states, 703 states have (on average 1.1209103840682788) internal successors, (788), 708 states have internal predecessors, (788), 90 states have call successors, (90), 84 states have call predecessors, (90), 84 states have return successors, (90), 86 states have call predecessors, (90), 90 states have call successors, (90) [2023-11-29 00:57:45,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 879 states to 879 states and 968 transitions. [2023-11-29 00:57:45,692 INFO L78 Accepts]: Start accepts. Automaton has 879 states and 968 transitions. Word has length 159 [2023-11-29 00:57:45,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:57:45,693 INFO L495 AbstractCegarLoop]: Abstraction has 879 states and 968 transitions. [2023-11-29 00:57:45,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.166666666666667) internal successors, (31), 7 states have internal predecessors, (31), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-29 00:57:45,693 INFO L276 IsEmpty]: Start isEmpty. Operand 879 states and 968 transitions. [2023-11-29 00:57:45,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-11-29 00:57:45,694 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:57:45,694 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 11, 11, 11, 10, 10, 10, 9, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:57:45,698 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2023-11-29 00:57:45,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:57:45,895 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 00:57:45,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:57:45,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1121204166, now seen corresponding path program 2 times [2023-11-29 00:57:45,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:57:45,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597747784] [2023-11-29 00:57:45,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:57:45,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:57:45,909 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:57:45,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1736866914] [2023-11-29 00:57:45,909 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 00:57:45,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:57:45,910 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:57:45,910 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:57:45,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-11-29 00:57:45,998 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 00:57:45,999 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:57:46,001 INFO L262 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 35 conjunts are in the unsatisfiable core [2023-11-29 00:57:46,004 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:57:46,527 INFO L134 CoverageAnalysis]: Checked inductivity of 787 backedges. 0 proven. 763 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-29 00:57:46,527 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:57:47,369 INFO L134 CoverageAnalysis]: Checked inductivity of 787 backedges. 0 proven. 343 refuted. 0 times theorem prover too weak. 444 trivial. 0 not checked. [2023-11-29 00:57:47,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:57:47,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597747784] [2023-11-29 00:57:47,370 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:57:47,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1736866914] [2023-11-29 00:57:47,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1736866914] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:57:47,370 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:57:47,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 35] total 69 [2023-11-29 00:57:47,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27714862] [2023-11-29 00:57:47,370 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:57:47,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2023-11-29 00:57:47,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:57:47,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2023-11-29 00:57:47,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=963, Invalid=3867, Unknown=0, NotChecked=0, Total=4830 [2023-11-29 00:57:47,373 INFO L87 Difference]: Start difference. First operand 879 states and 968 transitions. Second operand has 70 states, 69 states have (on average 3.217391304347826) internal successors, (222), 70 states have internal predecessors, (222), 32 states have call successors, (38), 17 states have call predecessors, (38), 17 states have return successors, (38), 32 states have call predecessors, (38), 32 states have call successors, (38) [2023-11-29 00:57:51,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:57:51,936 INFO L93 Difference]: Finished difference Result 1951 states and 2170 transitions. [2023-11-29 00:57:51,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2023-11-29 00:57:51,937 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 69 states have (on average 3.217391304347826) internal successors, (222), 70 states have internal predecessors, (222), 32 states have call successors, (38), 17 states have call predecessors, (38), 17 states have return successors, (38), 32 states have call predecessors, (38), 32 states have call successors, (38) Word has length 179 [2023-11-29 00:57:51,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:57:51,942 INFO L225 Difference]: With dead ends: 1951 [2023-11-29 00:57:51,942 INFO L226 Difference]: Without dead ends: 1789 [2023-11-29 00:57:51,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 288 SyntacticMatches, 0 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7524 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=5222, Invalid=21510, Unknown=0, NotChecked=0, Total=26732 [2023-11-29 00:57:51,945 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 649 mSDsluCounter, 497 mSDsCounter, 0 mSdLazyCounter, 699 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 649 SdHoareTripleChecker+Valid, 525 SdHoareTripleChecker+Invalid, 743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 699 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-11-29 00:57:51,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [649 Valid, 525 Invalid, 743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 699 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-11-29 00:57:51,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1789 states. [2023-11-29 00:57:52,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1789 to 1602. [2023-11-29 00:57:52,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1602 states, 1286 states have (on average 1.1321928460342146) internal successors, (1456), 1293 states have internal predecessors, (1456), 161 states have call successors, (161), 153 states have call predecessors, (161), 153 states have return successors, (161), 155 states have call predecessors, (161), 161 states have call successors, (161) [2023-11-29 00:57:52,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1602 states to 1602 states and 1778 transitions. [2023-11-29 00:57:52,073 INFO L78 Accepts]: Start accepts. Automaton has 1602 states and 1778 transitions. Word has length 179 [2023-11-29 00:57:52,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:57:52,073 INFO L495 AbstractCegarLoop]: Abstraction has 1602 states and 1778 transitions. [2023-11-29 00:57:52,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 69 states have (on average 3.217391304347826) internal successors, (222), 70 states have internal predecessors, (222), 32 states have call successors, (38), 17 states have call predecessors, (38), 17 states have return successors, (38), 32 states have call predecessors, (38), 32 states have call successors, (38) [2023-11-29 00:57:52,073 INFO L276 IsEmpty]: Start isEmpty. Operand 1602 states and 1778 transitions. [2023-11-29 00:57:52,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2023-11-29 00:57:52,075 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:57:52,075 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 12, 12, 12, 11, 11, 11, 10, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:57:52,081 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2023-11-29 00:57:52,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:57:52,276 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 00:57:52,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:57:52,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1838039299, now seen corresponding path program 2 times [2023-11-29 00:57:52,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:57:52,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245609569] [2023-11-29 00:57:52,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:57:52,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:57:52,286 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:57:52,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [963647588] [2023-11-29 00:57:52,286 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 00:57:52,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:57:52,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:57:52,287 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:57:52,288 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-11-29 00:57:52,371 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 00:57:52,371 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:57:52,373 INFO L262 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 33 conjunts are in the unsatisfiable core [2023-11-29 00:57:52,376 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:57:52,822 INFO L134 CoverageAnalysis]: Checked inductivity of 844 backedges. 14 proven. 806 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-29 00:57:52,822 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:57:53,589 INFO L134 CoverageAnalysis]: Checked inductivity of 844 backedges. 14 proven. 386 refuted. 0 times theorem prover too weak. 444 trivial. 0 not checked. [2023-11-29 00:57:53,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:57:53,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245609569] [2023-11-29 00:57:53,589 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:57:53,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [963647588] [2023-11-29 00:57:53,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [963647588] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:57:53,589 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:57:53,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 34] total 66 [2023-11-29 00:57:53,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742274083] [2023-11-29 00:57:53,590 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:57:53,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2023-11-29 00:57:53,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:57:53,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2023-11-29 00:57:53,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=913, Invalid=3377, Unknown=0, NotChecked=0, Total=4290 [2023-11-29 00:57:53,592 INFO L87 Difference]: Start difference. First operand 1602 states and 1778 transitions. Second operand has 66 states, 66 states have (on average 3.378787878787879) internal successors, (223), 66 states have internal predecessors, (223), 32 states have call successors, (38), 17 states have call predecessors, (38), 17 states have return successors, (38), 32 states have call predecessors, (38), 32 states have call successors, (38) [2023-11-29 00:57:56,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:57:56,905 INFO L93 Difference]: Finished difference Result 2666 states and 2983 transitions. [2023-11-29 00:57:56,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2023-11-29 00:57:56,906 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 3.378787878787879) internal successors, (223), 66 states have internal predecessors, (223), 32 states have call successors, (38), 17 states have call predecessors, (38), 17 states have return successors, (38), 32 states have call predecessors, (38), 32 states have call successors, (38) Word has length 183 [2023-11-29 00:57:56,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:57:56,913 INFO L225 Difference]: With dead ends: 2666 [2023-11-29 00:57:56,913 INFO L226 Difference]: Without dead ends: 2382 [2023-11-29 00:57:56,915 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 300 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5179 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=4494, Invalid=15812, Unknown=0, NotChecked=0, Total=20306 [2023-11-29 00:57:56,916 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 614 mSDsluCounter, 392 mSDsCounter, 0 mSdLazyCounter, 473 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 614 SdHoareTripleChecker+Valid, 422 SdHoareTripleChecker+Invalid, 502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-29 00:57:56,916 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [614 Valid, 422 Invalid, 502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 473 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-29 00:57:56,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2382 states. [2023-11-29 00:57:57,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2382 to 1738. [2023-11-29 00:57:57,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1738 states, 1394 states have (on average 1.1284074605451937) internal successors, (1573), 1401 states have internal predecessors, (1573), 175 states have call successors, (175), 167 states have call predecessors, (175), 167 states have return successors, (175), 169 states have call predecessors, (175), 175 states have call successors, (175) [2023-11-29 00:57:57,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1738 states to 1738 states and 1923 transitions. [2023-11-29 00:57:57,070 INFO L78 Accepts]: Start accepts. Automaton has 1738 states and 1923 transitions. Word has length 183 [2023-11-29 00:57:57,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:57:57,070 INFO L495 AbstractCegarLoop]: Abstraction has 1738 states and 1923 transitions. [2023-11-29 00:57:57,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 3.378787878787879) internal successors, (223), 66 states have internal predecessors, (223), 32 states have call successors, (38), 17 states have call predecessors, (38), 17 states have return successors, (38), 32 states have call predecessors, (38), 32 states have call successors, (38) [2023-11-29 00:57:57,070 INFO L276 IsEmpty]: Start isEmpty. Operand 1738 states and 1923 transitions. [2023-11-29 00:57:57,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-11-29 00:57:57,073 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:57:57,073 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 10, 10, 10, 9, 9, 9, 8, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:57:57,078 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2023-11-29 00:57:57,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:57:57,274 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 00:57:57,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:57:57,274 INFO L85 PathProgramCache]: Analyzing trace with hash -1489593354, now seen corresponding path program 3 times [2023-11-29 00:57:57,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:57:57,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074798354] [2023-11-29 00:57:57,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:57:57,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:57:57,285 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:57:57,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2030391316] [2023-11-29 00:57:57,285 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 00:57:57,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:57:57,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:57:57,286 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:57:57,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-11-29 00:57:57,353 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-29 00:57:57,353 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:57:57,354 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 00:57:57,356 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:57:57,401 INFO L134 CoverageAnalysis]: Checked inductivity of 848 backedges. 145 proven. 1 refuted. 0 times theorem prover too weak. 702 trivial. 0 not checked. [2023-11-29 00:57:57,401 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:57:57,520 INFO L134 CoverageAnalysis]: Checked inductivity of 848 backedges. 85 proven. 1 refuted. 0 times theorem prover too weak. 762 trivial. 0 not checked. [2023-11-29 00:57:57,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:57:57,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074798354] [2023-11-29 00:57:57,520 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:57:57,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2030391316] [2023-11-29 00:57:57,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2030391316] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:57:57,520 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:57:57,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2023-11-29 00:57:57,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791745198] [2023-11-29 00:57:57,521 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:57:57,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 00:57:57,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:57:57,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 00:57:57,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2023-11-29 00:57:57,522 INFO L87 Difference]: Start difference. First operand 1738 states and 1923 transitions. Second operand has 16 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 16 states have internal predecessors, (56), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-29 00:57:58,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:57:58,225 INFO L93 Difference]: Finished difference Result 1880 states and 2080 transitions. [2023-11-29 00:57:58,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-29 00:57:58,225 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 16 states have internal predecessors, (56), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 193 [2023-11-29 00:57:58,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:57:58,225 INFO L225 Difference]: With dead ends: 1880 [2023-11-29 00:57:58,225 INFO L226 Difference]: Without dead ends: 0 [2023-11-29 00:57:58,227 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 398 GetRequests, 370 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=196, Invalid=674, Unknown=0, NotChecked=0, Total=870 [2023-11-29 00:57:58,227 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 90 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 00:57:58,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 219 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 00:57:58,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-29 00:57:58,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-29 00:57:58,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2023-11-29 00:57:58,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-29 00:57:58,228 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 193 [2023-11-29 00:57:58,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:57:58,228 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-29 00:57:58,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 16 states have internal predecessors, (56), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-29 00:57:58,229 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-29 00:57:58,229 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-29 00:57:58,230 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 6 remaining) [2023-11-29 00:57:58,231 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 6 remaining) [2023-11-29 00:57:58,231 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 6 remaining) [2023-11-29 00:57:58,231 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 6 remaining) [2023-11-29 00:57:58,231 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 6 remaining) [2023-11-29 00:57:58,231 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 6 remaining) [2023-11-29 00:57:58,235 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2023-11-29 00:57:58,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d763f3-8f42-4521-bddc-1fb180f660a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:57:58,433 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.