./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound50.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound50.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3134c54bcf8aadaf562f6870f2277db1ec6f958b1ed6dba99e7410745dba79ba --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:49:21,279 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:49:21,399 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-26 11:49:21,411 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:49:21,412 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:49:21,447 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:49:21,448 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:49:21,449 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:49:21,450 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:49:21,454 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:49:21,455 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:49:21,456 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:49:21,457 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:49:21,459 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:49:21,459 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:49:21,460 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:49:21,460 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 11:49:21,460 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:49:21,461 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:49:21,461 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:49:21,462 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:49:21,462 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 11:49:21,463 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:49:21,463 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 11:49:21,463 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-26 11:49:21,464 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 11:49:21,464 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:49:21,465 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:49:21,465 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:49:21,466 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:49:21,467 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:49:21,467 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:49:21,468 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:49:21,468 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:49:21,468 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:49:21,468 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:49:21,469 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 11:49:21,469 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:49:21,469 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:49:21,469 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:49:21,470 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:49:21,470 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 11:49:21,470 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:49:21,470 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:49:21,471 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_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3134c54bcf8aadaf562f6870f2277db1ec6f958b1ed6dba99e7410745dba79ba [2023-11-26 11:49:21,751 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:49:21,784 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:49:21,787 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:49:21,788 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:49:21,789 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:49:21,790 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound50.c [2023-11-26 11:49:24,960 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:49:25,183 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:49:25,184 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound50.c [2023-11-26 11:49:25,191 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/data/b3ae0f6a4/b514f4cb992b431a98379fd8a8842682/FLAGff9055e89 [2023-11-26 11:49:25,204 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/data/b3ae0f6a4/b514f4cb992b431a98379fd8a8842682 [2023-11-26 11:49:25,206 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:49:25,208 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:49:25,209 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:49:25,209 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:49:25,215 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:49:25,216 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:49:25" (1/1) ... [2023-11-26 11:49:25,217 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1acff2dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:25, skipping insertion in model container [2023-11-26 11:49:25,217 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:49:25" (1/1) ... [2023-11-26 11:49:25,242 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:49:25,441 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:49:25,453 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:49:25,478 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:49:25,493 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:49:25,493 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:25 WrapperNode [2023-11-26 11:49:25,494 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:49:25,495 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:49:25,495 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:49:25,495 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:49:25,503 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:25" (1/1) ... [2023-11-26 11:49:25,511 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:25" (1/1) ... [2023-11-26 11:49:25,537 INFO L138 Inliner]: procedures = 14, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 119 [2023-11-26 11:49:25,537 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:49:25,538 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:49:25,538 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:49:25,539 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:49:25,551 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:25" (1/1) ... [2023-11-26 11:49:25,551 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:25" (1/1) ... [2023-11-26 11:49:25,566 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:25" (1/1) ... [2023-11-26 11:49:25,578 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-26 11:49:25,578 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:25" (1/1) ... [2023-11-26 11:49:25,579 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:25" (1/1) ... [2023-11-26 11:49:25,583 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:25" (1/1) ... [2023-11-26 11:49:25,586 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:25" (1/1) ... [2023-11-26 11:49:25,587 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:25" (1/1) ... [2023-11-26 11:49:25,589 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:25" (1/1) ... [2023-11-26 11:49:25,591 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:49:25,592 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:49:25,592 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:49:25,592 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:49:25,593 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:25" (1/1) ... [2023-11-26 11:49:25,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:49:25,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:49:25,639 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:49:25,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:49:25,678 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:49:25,678 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-26 11:49:25,678 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-26 11:49:25,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 11:49:25,678 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:49:25,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:49:25,679 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-26 11:49:25,679 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-26 11:49:25,751 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:49:25,753 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:49:26,246 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:49:26,274 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:49:26,275 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-26 11:49:26,275 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:49:26 BoogieIcfgContainer [2023-11-26 11:49:26,275 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:49:26,278 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:49:26,278 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:49:26,281 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:49:26,281 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:49:25" (1/3) ... [2023-11-26 11:49:26,282 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@520a4793 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:49:26, skipping insertion in model container [2023-11-26 11:49:26,282 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:25" (2/3) ... [2023-11-26 11:49:26,282 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@520a4793 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:49:26, skipping insertion in model container [2023-11-26 11:49:26,283 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:49:26" (3/3) ... [2023-11-26 11:49:26,284 INFO L112 eAbstractionObserver]: Analyzing ICFG egcd-ll_valuebound50.c [2023-11-26 11:49:26,303 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:49:26,303 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 56 error locations. [2023-11-26 11:49:26,359 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:49:26,369 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;@38f12bd8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:49:26,369 INFO L358 AbstractCegarLoop]: Starting to check reachability of 56 error locations. [2023-11-26 11:49:26,376 INFO L276 IsEmpty]: Start isEmpty. Operand has 139 states, 69 states have (on average 1.8985507246376812) internal successors, (131), 125 states have internal predecessors, (131), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-26 11:49:26,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-26 11:49:26,385 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:49:26,386 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:49:26,386 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-11-26 11:49:26,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:26,391 INFO L85 PathProgramCache]: Analyzing trace with hash 38741639, now seen corresponding path program 1 times [2023-11-26 11:49:26,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:26,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001423969] [2023-11-26 11:49:26,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:26,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:26,505 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:49:26,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [65269673] [2023-11-26 11:49:26,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:26,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:49:26,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:49:26,510 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:49:26,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 11:49:26,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:26,573 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 11:49:26,578 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:49:26,638 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-26 11:49:26,638 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:49:26,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:49:26,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001423969] [2023-11-26 11:49:26,639 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:49:26,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [65269673] [2023-11-26 11:49:26,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [65269673] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:49:26,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:49:26,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:49:26,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058420115] [2023-11-26 11:49:26,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:49:26,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:49:26,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:49:26,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:49:26,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:49:26,682 INFO L87 Difference]: Start difference. First operand has 139 states, 69 states have (on average 1.8985507246376812) internal successors, (131), 125 states have internal predecessors, (131), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-26 11:49:26,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:49:26,970 INFO L93 Difference]: Finished difference Result 393 states and 451 transitions. [2023-11-26 11:49:26,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:49:26,973 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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 25 [2023-11-26 11:49:26,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:49:26,984 INFO L225 Difference]: With dead ends: 393 [2023-11-26 11:49:26,985 INFO L226 Difference]: Without dead ends: 251 [2023-11-26 11:49:26,989 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:49:26,993 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 108 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 11:49:26,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 147 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 11:49:27,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2023-11-26 11:49:27,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 174. [2023-11-26 11:49:27,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 101 states have (on average 1.8613861386138615) internal successors, (188), 156 states have internal predecessors, (188), 15 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-26 11:49:27,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 218 transitions. [2023-11-26 11:49:27,054 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 218 transitions. Word has length 25 [2023-11-26 11:49:27,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:49:27,054 INFO L495 AbstractCegarLoop]: Abstraction has 174 states and 218 transitions. [2023-11-26 11:49:27,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-26 11:49:27,055 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 218 transitions. [2023-11-26 11:49:27,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-26 11:49:27,057 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:49:27,057 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:49:27,063 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-26 11:49:27,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-26 11:49:27,263 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-11-26 11:49:27,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:27,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1200990860, now seen corresponding path program 1 times [2023-11-26 11:49:27,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:27,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855068492] [2023-11-26 11:49:27,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:27,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:27,283 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:49:27,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [488779144] [2023-11-26 11:49:27,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:27,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:49:27,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:49:27,286 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:49:27,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 11:49:27,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:27,356 INFO L262 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 11:49:27,359 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:49:27,406 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-26 11:49:27,407 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:49:27,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:49:27,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855068492] [2023-11-26 11:49:27,409 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:49:27,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [488779144] [2023-11-26 11:49:27,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [488779144] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:49:27,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:49:27,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:49:27,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64283608] [2023-11-26 11:49:27,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:49:27,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:49:27,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:49:27,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:49:27,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:49:27,415 INFO L87 Difference]: Start difference. First operand 174 states and 218 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-26 11:49:27,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:49:27,677 INFO L93 Difference]: Finished difference Result 251 states and 267 transitions. [2023-11-26 11:49:27,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:49:27,678 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 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 26 [2023-11-26 11:49:27,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:49:27,684 INFO L225 Difference]: With dead ends: 251 [2023-11-26 11:49:27,684 INFO L226 Difference]: Without dead ends: 249 [2023-11-26 11:49:27,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:49:27,688 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 104 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 11:49:27,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 145 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 11:49:27,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2023-11-26 11:49:27,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 175. [2023-11-26 11:49:27,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 102 states have (on average 1.8431372549019607) internal successors, (188), 157 states have internal predecessors, (188), 15 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-26 11:49:27,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 218 transitions. [2023-11-26 11:49:27,725 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 218 transitions. Word has length 26 [2023-11-26 11:49:27,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:49:27,725 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 218 transitions. [2023-11-26 11:49:27,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-26 11:49:27,726 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 218 transitions. [2023-11-26 11:49:27,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-26 11:49:27,727 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:49:27,727 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:49:27,734 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-26 11:49:27,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-26 11:49:27,928 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-11-26 11:49:27,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:27,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1423988951, now seen corresponding path program 1 times [2023-11-26 11:49:27,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:27,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045920393] [2023-11-26 11:49:27,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:27,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:27,960 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:49:27,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2135032920] [2023-11-26 11:49:27,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:27,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:49:27,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:49:27,975 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:49:28,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 11:49:28,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:28,041 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 11:49:28,045 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:49:28,067 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-26 11:49:28,067 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:49:28,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:49:28,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045920393] [2023-11-26 11:49:28,068 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:49:28,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2135032920] [2023-11-26 11:49:28,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2135032920] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:49:28,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:49:28,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:49:28,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86398580] [2023-11-26 11:49:28,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:49:28,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:49:28,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:49:28,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:49:28,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:49:28,072 INFO L87 Difference]: Start difference. First operand 175 states and 218 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-26 11:49:28,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:49:28,217 INFO L93 Difference]: Finished difference Result 292 states and 342 transitions. [2023-11-26 11:49:28,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:49:28,217 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 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 27 [2023-11-26 11:49:28,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:49:28,220 INFO L225 Difference]: With dead ends: 292 [2023-11-26 11:49:28,220 INFO L226 Difference]: Without dead ends: 284 [2023-11-26 11:49:28,221 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:49:28,222 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 100 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:49:28,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 203 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:49:28,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2023-11-26 11:49:28,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 228. [2023-11-26 11:49:28,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 149 states have (on average 1.7919463087248322) internal successors, (267), 204 states have internal predecessors, (267), 21 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2023-11-26 11:49:28,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 309 transitions. [2023-11-26 11:49:28,244 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 309 transitions. Word has length 27 [2023-11-26 11:49:28,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:49:28,245 INFO L495 AbstractCegarLoop]: Abstraction has 228 states and 309 transitions. [2023-11-26 11:49:28,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-26 11:49:28,245 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 309 transitions. [2023-11-26 11:49:28,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-26 11:49:28,246 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:49:28,247 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] [2023-11-26 11:49:28,264 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-26 11:49:28,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:49:28,452 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-11-26 11:49:28,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:28,453 INFO L85 PathProgramCache]: Analyzing trace with hash 1641187275, now seen corresponding path program 1 times [2023-11-26 11:49:28,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:28,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990368295] [2023-11-26 11:49:28,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:28,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:28,476 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:49:28,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [44181408] [2023-11-26 11:49:28,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:28,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:49:28,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:49:28,479 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:49:28,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-26 11:49:28,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:28,533 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 11:49:28,537 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:49:28,633 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-26 11:49:28,633 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:49:28,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:49:28,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990368295] [2023-11-26 11:49:28,634 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:49:28,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [44181408] [2023-11-26 11:49:28,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [44181408] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:49:28,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:49:28,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:49:28,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440628460] [2023-11-26 11:49:28,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:49:28,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:49:28,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:49:28,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:49:28,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:49:28,638 INFO L87 Difference]: Start difference. First operand 228 states and 309 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-26 11:49:28,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:49:28,886 INFO L93 Difference]: Finished difference Result 284 states and 328 transitions. [2023-11-26 11:49:28,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:49:28,888 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 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 29 [2023-11-26 11:49:28,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:49:28,891 INFO L225 Difference]: With dead ends: 284 [2023-11-26 11:49:28,891 INFO L226 Difference]: Without dead ends: 277 [2023-11-26 11:49:28,891 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:49:28,892 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 90 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 11:49:28,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 125 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 11:49:28,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2023-11-26 11:49:28,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 232. [2023-11-26 11:49:28,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 153 states have (on average 1.7450980392156863) internal successors, (267), 208 states have internal predecessors, (267), 21 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2023-11-26 11:49:28,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 309 transitions. [2023-11-26 11:49:28,933 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 309 transitions. Word has length 29 [2023-11-26 11:49:28,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:49:28,934 INFO L495 AbstractCegarLoop]: Abstraction has 232 states and 309 transitions. [2023-11-26 11:49:28,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-26 11:49:28,934 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 309 transitions. [2023-11-26 11:49:28,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-26 11:49:28,936 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:49:28,936 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] [2023-11-26 11:49:28,946 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-26 11:49:29,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:49:29,143 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-11-26 11:49:29,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:29,144 INFO L85 PathProgramCache]: Analyzing trace with hash -662801968, now seen corresponding path program 1 times [2023-11-26 11:49:29,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:29,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539883009] [2023-11-26 11:49:29,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:29,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:29,161 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:49:29,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1919655585] [2023-11-26 11:49:29,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:29,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:49:29,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:49:29,163 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:49:29,190 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-26 11:49:29,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:29,241 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 11:49:29,243 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:49:29,305 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-26 11:49:29,307 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:49:29,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:49:29,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539883009] [2023-11-26 11:49:29,310 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:49:29,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1919655585] [2023-11-26 11:49:29,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1919655585] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:49:29,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:49:29,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:49:29,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141922147] [2023-11-26 11:49:29,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:49:29,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:49:29,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:49:29,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:49:29,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:49:29,318 INFO L87 Difference]: Start difference. First operand 232 states and 309 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-26 11:49:29,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:49:29,665 INFO L93 Difference]: Finished difference Result 277 states and 320 transitions. [2023-11-26 11:49:29,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:49:29,665 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 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 30 [2023-11-26 11:49:29,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:49:29,668 INFO L225 Difference]: With dead ends: 277 [2023-11-26 11:49:29,668 INFO L226 Difference]: Without dead ends: 272 [2023-11-26 11:49:29,668 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:49:29,671 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 171 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 11:49:29,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 173 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 11:49:29,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2023-11-26 11:49:29,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 193. [2023-11-26 11:49:29,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 119 states have (on average 1.73109243697479) internal successors, (206), 174 states have internal predecessors, (206), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-26 11:49:29,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 238 transitions. [2023-11-26 11:49:29,691 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 238 transitions. Word has length 30 [2023-11-26 11:49:29,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:49:29,692 INFO L495 AbstractCegarLoop]: Abstraction has 193 states and 238 transitions. [2023-11-26 11:49:29,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-26 11:49:29,692 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 238 transitions. [2023-11-26 11:49:29,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-26 11:49:29,694 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:49:29,694 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, 1] [2023-11-26 11:49:29,707 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-26 11:49:29,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:49:29,900 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-11-26 11:49:29,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:29,901 INFO L85 PathProgramCache]: Analyzing trace with hash 330085702, now seen corresponding path program 1 times [2023-11-26 11:49:29,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:29,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123283871] [2023-11-26 11:49:29,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:29,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:29,924 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:49:29,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [691641220] [2023-11-26 11:49:29,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:29,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:49:29,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:49:29,931 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:49:29,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-26 11:49:29,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:29,995 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-26 11:49:29,999 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:49:30,189 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-26 11:49:30,189 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:49:30,478 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-26 11:49:30,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:49:30,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123283871] [2023-11-26 11:49:30,481 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:49:30,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [691641220] [2023-11-26 11:49:30,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [691641220] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-26 11:49:30,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:49:30,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2023-11-26 11:49:30,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890243561] [2023-11-26 11:49:30,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:49:30,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:49:30,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:49:30,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:49:30,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-11-26 11:49:30,484 INFO L87 Difference]: Start difference. First operand 193 states and 238 transitions. Second operand has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-26 11:49:34,898 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-26 11:49:40,651 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-26 11:49:44,654 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-26 11:49:47,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:49:47,184 INFO L93 Difference]: Finished difference Result 218 states and 266 transitions. [2023-11-26 11:49:47,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:49:47,185 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 36 [2023-11-26 11:49:47,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:49:47,187 INFO L225 Difference]: With dead ends: 218 [2023-11-26 11:49:47,187 INFO L226 Difference]: Without dead ends: 216 [2023-11-26 11:49:47,188 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-11-26 11:49:47,189 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 236 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 14 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.6s IncrementalHoareTripleChecker+Time [2023-11-26 11:49:47,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 171 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 165 Invalid, 9 Unknown, 0 Unchecked, 16.6s Time] [2023-11-26 11:49:47,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2023-11-26 11:49:47,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 210. [2023-11-26 11:49:47,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 135 states have (on average 1.674074074074074) internal successors, (226), 189 states have internal predecessors, (226), 18 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-11-26 11:49:47,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 262 transitions. [2023-11-26 11:49:47,211 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 262 transitions. Word has length 36 [2023-11-26 11:49:47,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:49:47,212 INFO L495 AbstractCegarLoop]: Abstraction has 210 states and 262 transitions. [2023-11-26 11:49:47,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-26 11:49:47,212 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 262 transitions. [2023-11-26 11:49:47,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-11-26 11:49:47,214 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:49:47,214 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, 1, 1] [2023-11-26 11:49:47,229 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-26 11:49:47,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:49:47,420 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-11-26 11:49:47,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:47,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1642722234, now seen corresponding path program 1 times [2023-11-26 11:49:47,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:47,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174849808] [2023-11-26 11:49:47,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:47,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:47,434 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:49:47,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1282757691] [2023-11-26 11:49:47,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:47,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:49:47,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:49:47,440 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:49:47,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-26 11:49:47,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:47,506 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-26 11:49:47,508 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:49:47,638 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-26 11:49:47,638 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:49:47,905 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-26 11:49:47,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:49:47,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174849808] [2023-11-26 11:49:47,906 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:49:47,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1282757691] [2023-11-26 11:49:47,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1282757691] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-26 11:49:47,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:49:47,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2023-11-26 11:49:47,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757543137] [2023-11-26 11:49:47,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:49:47,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:49:47,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:49:47,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:49:47,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-11-26 11:49:47,909 INFO L87 Difference]: Start difference. First operand 210 states and 262 transitions. Second operand has 6 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-26 11:49:50,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:49:50,906 INFO L93 Difference]: Finished difference Result 219 states and 266 transitions. [2023-11-26 11:49:50,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:49:50,907 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 37 [2023-11-26 11:49:50,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:49:50,910 INFO L225 Difference]: With dead ends: 219 [2023-11-26 11:49:50,910 INFO L226 Difference]: Without dead ends: 217 [2023-11-26 11:49:50,911 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-11-26 11:49:50,912 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 233 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-11-26 11:49:50,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 236 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-11-26 11:49:50,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2023-11-26 11:49:50,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 211. [2023-11-26 11:49:50,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 137 states have (on average 1.6496350364963503) internal successors, (226), 190 states have internal predecessors, (226), 18 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-11-26 11:49:50,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 262 transitions. [2023-11-26 11:49:50,946 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 262 transitions. Word has length 37 [2023-11-26 11:49:50,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:49:50,948 INFO L495 AbstractCegarLoop]: Abstraction has 211 states and 262 transitions. [2023-11-26 11:49:50,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-26 11:49:50,949 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 262 transitions. [2023-11-26 11:49:50,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-11-26 11:49:50,953 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:49:50,953 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, 1, 1, 1] [2023-11-26 11:49:50,964 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-26 11:49:51,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-26 11:49:51,159 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-11-26 11:49:51,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:51,160 INFO L85 PathProgramCache]: Analyzing trace with hash -615218232, now seen corresponding path program 1 times [2023-11-26 11:49:51,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:51,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147695650] [2023-11-26 11:49:51,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:51,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:51,189 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:49:51,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1842533706] [2023-11-26 11:49:51,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:51,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:49:51,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:49:51,201 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:49:51,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-26 11:49:51,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:51,253 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 11:49:51,255 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:49:51,339 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-26 11:49:51,339 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:49:51,500 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-26 11:49:51,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:49:51,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147695650] [2023-11-26 11:49:51,500 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:49:51,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1842533706] [2023-11-26 11:49:51,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1842533706] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:49:51,501 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:49:51,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-26 11:49:51,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111285568] [2023-11-26 11:49:51,501 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 11:49:51,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-26 11:49:51,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:49:51,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-26 11:49:51,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-26 11:49:51,505 INFO L87 Difference]: Start difference. First operand 211 states and 262 transitions. Second operand has 9 states, 8 states have (on average 4.375) internal successors, (35), 7 states have internal predecessors, (35), 5 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2023-11-26 11:49:52,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:49:52,440 INFO L93 Difference]: Finished difference Result 375 states and 458 transitions. [2023-11-26 11:49:52,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 11:49:52,441 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.375) internal successors, (35), 7 states have internal predecessors, (35), 5 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) Word has length 38 [2023-11-26 11:49:52,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:49:52,444 INFO L225 Difference]: With dead ends: 375 [2023-11-26 11:49:52,444 INFO L226 Difference]: Without dead ends: 373 [2023-11-26 11:49:52,445 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2023-11-26 11:49:52,446 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 518 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 526 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-26 11:49:52,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [526 Valid, 218 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-26 11:49:52,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2023-11-26 11:49:52,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 212. [2023-11-26 11:49:52,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 139 states have (on average 1.6258992805755397) internal successors, (226), 191 states have internal predecessors, (226), 18 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-11-26 11:49:52,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 262 transitions. [2023-11-26 11:49:52,475 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 262 transitions. Word has length 38 [2023-11-26 11:49:52,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:49:52,476 INFO L495 AbstractCegarLoop]: Abstraction has 212 states and 262 transitions. [2023-11-26 11:49:52,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.375) internal successors, (35), 7 states have internal predecessors, (35), 5 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2023-11-26 11:49:52,476 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 262 transitions. [2023-11-26 11:49:52,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-26 11:49:52,481 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:49:52,481 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, 1, 1, 1, 1] [2023-11-26 11:49:52,499 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-26 11:49:52,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:49:52,688 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-11-26 11:49:52,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:52,688 INFO L85 PathProgramCache]: Analyzing trace with hash -1891895940, now seen corresponding path program 1 times [2023-11-26 11:49:52,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:52,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450548736] [2023-11-26 11:49:52,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:52,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:52,702 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:49:52,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1854679834] [2023-11-26 11:49:52,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:52,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:49:52,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:49:52,704 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:49:52,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-26 11:49:52,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:52,761 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 11:49:52,763 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:49:52,899 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-26 11:49:52,900 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:49:53,054 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-26 11:49:53,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:49:53,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450548736] [2023-11-26 11:49:53,054 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:49:53,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1854679834] [2023-11-26 11:49:53,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1854679834] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:49:53,055 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:49:53,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-26 11:49:53,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016659743] [2023-11-26 11:49:53,055 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 11:49:53,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-26 11:49:53,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:49:53,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-26 11:49:53,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-26 11:49:53,057 INFO L87 Difference]: Start difference. First operand 212 states and 262 transitions. Second operand has 9 states, 8 states have (on average 4.75) internal successors, (38), 9 states have internal predecessors, (38), 5 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (10), 4 states have call predecessors, (10), 5 states have call successors, (10) [2023-11-26 11:49:53,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:49:53,596 INFO L93 Difference]: Finished difference Result 373 states and 453 transitions. [2023-11-26 11:49:53,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 11:49:53,597 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.75) internal successors, (38), 9 states have internal predecessors, (38), 5 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (10), 4 states have call predecessors, (10), 5 states have call successors, (10) Word has length 39 [2023-11-26 11:49:53,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:49:53,599 INFO L225 Difference]: With dead ends: 373 [2023-11-26 11:49:53,599 INFO L226 Difference]: Without dead ends: 371 [2023-11-26 11:49:53,600 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2023-11-26 11:49:53,600 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 306 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 403 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-26 11:49:53,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [312 Valid, 385 Invalid, 418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 403 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-26 11:49:53,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2023-11-26 11:49:53,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 213. [2023-11-26 11:49:53,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 141 states have (on average 1.6028368794326242) internal successors, (226), 192 states have internal predecessors, (226), 18 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-11-26 11:49:53,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 262 transitions. [2023-11-26 11:49:53,629 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 262 transitions. Word has length 39 [2023-11-26 11:49:53,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:49:53,630 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 262 transitions. [2023-11-26 11:49:53,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.75) internal successors, (38), 9 states have internal predecessors, (38), 5 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (10), 4 states have call predecessors, (10), 5 states have call successors, (10) [2023-11-26 11:49:53,630 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 262 transitions. [2023-11-26 11:49:53,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-26 11:49:53,631 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:49:53,631 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, 1, 1, 1, 1, 1] [2023-11-26 11:49:53,637 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-26 11:49:53,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-26 11:49:53,837 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-11-26 11:49:53,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:53,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1480768074, now seen corresponding path program 1 times [2023-11-26 11:49:53,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:53,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486677861] [2023-11-26 11:49:53,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:53,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:53,869 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:49:53,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [654962988] [2023-11-26 11:49:53,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:53,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:49:53,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:49:53,882 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:49:53,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-26 11:49:53,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:53,944 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-26 11:49:53,946 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:49:54,164 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-26 11:49:54,165 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:49:54,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:49:54,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486677861] [2023-11-26 11:49:54,165 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:49:54,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [654962988] [2023-11-26 11:49:54,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [654962988] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:49:54,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:49:54,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-26 11:49:54,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410658831] [2023-11-26 11:49:54,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:49:54,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 11:49:54,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:49:54,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 11:49:54,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-26 11:49:54,168 INFO L87 Difference]: Start difference. First operand 213 states and 262 transitions. Second operand has 8 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 4 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2023-11-26 11:49:55,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:49:55,492 INFO L93 Difference]: Finished difference Result 365 states and 446 transitions. [2023-11-26 11:49:55,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 11:49:55,493 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 4 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) Word has length 40 [2023-11-26 11:49:55,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:49:55,496 INFO L225 Difference]: With dead ends: 365 [2023-11-26 11:49:55,496 INFO L226 Difference]: Without dead ends: 363 [2023-11-26 11:49:55,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-11-26 11:49:55,497 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 408 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 414 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 419 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-26 11:49:55,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [419 Valid, 164 Invalid, 426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 414 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-26 11:49:55,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2023-11-26 11:49:55,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 275. [2023-11-26 11:49:55,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 196 states have (on average 1.6122448979591837) internal successors, (316), 247 states have internal predecessors, (316), 25 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-26 11:49:55,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 366 transitions. [2023-11-26 11:49:55,530 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 366 transitions. Word has length 40 [2023-11-26 11:49:55,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:49:55,531 INFO L495 AbstractCegarLoop]: Abstraction has 275 states and 366 transitions. [2023-11-26 11:49:55,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 4 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2023-11-26 11:49:55,531 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 366 transitions. [2023-11-26 11:49:55,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-26 11:49:55,532 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:49:55,532 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, 1, 1, 1, 1, 1, 1] [2023-11-26 11:49:55,539 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-26 11:49:55,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-26 11:49:55,739 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-11-26 11:49:55,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:55,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1340829890, now seen corresponding path program 1 times [2023-11-26 11:49:55,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:55,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519831988] [2023-11-26 11:49:55,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:55,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:55,767 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:49:55,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [648563839] [2023-11-26 11:49:55,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:55,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:49:55,768 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:49:55,769 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:49:55,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-26 11:49:55,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:55,835 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-26 11:49:55,837 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:49:56,009 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-26 11:49:56,010 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:49:56,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:49:56,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519831988] [2023-11-26 11:49:56,205 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:49:56,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [648563839] [2023-11-26 11:49:56,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [648563839] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:49:56,205 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:49:56,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2023-11-26 11:49:56,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692688825] [2023-11-26 11:49:56,206 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-26 11:49:56,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 11:49:56,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:49:56,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 11:49:56,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-11-26 11:49:56,208 INFO L87 Difference]: Start difference. First operand 275 states and 366 transitions. Second operand has 8 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 3 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-26 11:49:57,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:49:57,798 INFO L93 Difference]: Finished difference Result 369 states and 450 transitions. [2023-11-26 11:49:57,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 11:49:57,807 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 3 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 41 [2023-11-26 11:49:57,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:49:57,810 INFO L225 Difference]: With dead ends: 369 [2023-11-26 11:49:57,810 INFO L226 Difference]: Without dead ends: 367 [2023-11-26 11:49:57,810 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-11-26 11:49:57,811 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 506 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 420 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 518 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-26 11:49:57,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [518 Valid, 196 Invalid, 438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 420 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-26 11:49:57,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2023-11-26 11:49:57,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 277. [2023-11-26 11:49:57,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 198 states have (on average 1.595959595959596) internal successors, (316), 249 states have internal predecessors, (316), 25 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-26 11:49:57,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 366 transitions. [2023-11-26 11:49:57,842 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 366 transitions. Word has length 41 [2023-11-26 11:49:57,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:49:57,844 INFO L495 AbstractCegarLoop]: Abstraction has 277 states and 366 transitions. [2023-11-26 11:49:57,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 3 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-26 11:49:57,844 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 366 transitions. [2023-11-26 11:49:57,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-11-26 11:49:57,845 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:49:57,846 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, 1, 1, 1, 1] [2023-11-26 11:49:57,856 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-26 11:49:58,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-26 11:49:58,046 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-11-26 11:49:58,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:58,047 INFO L85 PathProgramCache]: Analyzing trace with hash 44615711, now seen corresponding path program 1 times [2023-11-26 11:49:58,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:58,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973322579] [2023-11-26 11:49:58,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:58,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:58,058 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:49:58,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [16492820] [2023-11-26 11:49:58,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:58,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:49:58,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:49:58,061 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:49:58,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-26 11:49:58,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:58,114 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 11:49:58,116 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:49:58,213 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-26 11:49:58,214 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:49:58,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:49:58,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973322579] [2023-11-26 11:49:58,214 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:49:58,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [16492820] [2023-11-26 11:49:58,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [16492820] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:49:58,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:49:58,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 11:49:58,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043339948] [2023-11-26 11:49:58,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:49:58,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:49:58,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:49:58,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:49:58,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:49:58,217 INFO L87 Difference]: Start difference. First operand 277 states and 366 transitions. Second operand has 6 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-26 11:49:58,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:49:58,548 INFO L93 Difference]: Finished difference Result 319 states and 385 transitions. [2023-11-26 11:49:58,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:49:58,549 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 49 [2023-11-26 11:49:58,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:49:58,551 INFO L225 Difference]: With dead ends: 319 [2023-11-26 11:49:58,552 INFO L226 Difference]: Without dead ends: 317 [2023-11-26 11:49:58,552 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:49:58,553 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 189 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 11:49:58,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 302 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 11:49:58,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2023-11-26 11:49:58,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 278. [2023-11-26 11:49:58,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 199 states have (on average 1.5829145728643217) internal successors, (315), 250 states have internal predecessors, (315), 25 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-26 11:49:58,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 365 transitions. [2023-11-26 11:49:58,582 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 365 transitions. Word has length 49 [2023-11-26 11:49:58,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:49:58,583 INFO L495 AbstractCegarLoop]: Abstraction has 278 states and 365 transitions. [2023-11-26 11:49:58,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-26 11:49:58,583 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 365 transitions. [2023-11-26 11:49:58,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-26 11:49:58,584 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:49:58,584 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, 1, 1, 1, 1, 1] [2023-11-26 11:49:58,603 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-26 11:49:58,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:49:58,795 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-11-26 11:49:58,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:58,795 INFO L85 PathProgramCache]: Analyzing trace with hash 1383087122, now seen corresponding path program 1 times [2023-11-26 11:49:58,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:58,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201337815] [2023-11-26 11:49:58,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:58,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:58,822 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:49:58,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [927167002] [2023-11-26 11:49:58,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:58,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:49:58,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:49:58,824 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:49:58,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-26 11:49:58,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:58,884 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 11:49:58,886 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:49:59,017 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-26 11:49:59,018 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:49:59,183 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-26 11:49:59,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:49:59,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201337815] [2023-11-26 11:49:59,183 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:49:59,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [927167002] [2023-11-26 11:49:59,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [927167002] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:49:59,184 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:49:59,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-26 11:49:59,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887117819] [2023-11-26 11:49:59,184 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 11:49:59,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-26 11:49:59,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:49:59,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-26 11:49:59,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-26 11:49:59,186 INFO L87 Difference]: Start difference. First operand 278 states and 365 transitions. Second operand has 9 states, 8 states have (on average 6.125) internal successors, (49), 7 states have internal predecessors, (49), 5 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2023-11-26 11:49:59,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:49:59,697 INFO L93 Difference]: Finished difference Result 333 states and 396 transitions. [2023-11-26 11:49:59,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 11:49:59,697 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.125) internal successors, (49), 7 states have internal predecessors, (49), 5 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) Word has length 50 [2023-11-26 11:49:59,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:49:59,700 INFO L225 Difference]: With dead ends: 333 [2023-11-26 11:49:59,700 INFO L226 Difference]: Without dead ends: 331 [2023-11-26 11:49:59,701 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2023-11-26 11:49:59,701 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 420 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 401 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 426 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-26 11:49:59,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [426 Valid, 393 Invalid, 422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 401 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-26 11:49:59,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2023-11-26 11:49:59,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 284. [2023-11-26 11:49:59,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 205 states have (on average 1.575609756097561) internal successors, (323), 255 states have internal predecessors, (323), 26 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-26 11:49:59,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 375 transitions. [2023-11-26 11:49:59,732 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 375 transitions. Word has length 50 [2023-11-26 11:49:59,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:49:59,732 INFO L495 AbstractCegarLoop]: Abstraction has 284 states and 375 transitions. [2023-11-26 11:49:59,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.125) internal successors, (49), 7 states have internal predecessors, (49), 5 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2023-11-26 11:49:59,733 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 375 transitions. [2023-11-26 11:49:59,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-11-26 11:49:59,733 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:49:59,734 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, 1, 1, 1, 1, 1, 1] [2023-11-26 11:49:59,743 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-26 11:49:59,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:49:59,940 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-11-26 11:49:59,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:59,940 INFO L85 PathProgramCache]: Analyzing trace with hash -73972095, now seen corresponding path program 1 times [2023-11-26 11:49:59,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:59,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563049594] [2023-11-26 11:49:59,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:59,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:59,947 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:49:59,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1439276909] [2023-11-26 11:49:59,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:59,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:49:59,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:49:59,949 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:49:59,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-26 11:50:00,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:00,003 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-26 11:50:00,005 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:50:00,177 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-26 11:50:00,178 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:50:00,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:50:00,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563049594] [2023-11-26 11:50:00,178 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:50:00,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1439276909] [2023-11-26 11:50:00,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1439276909] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:50:00,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:50:00,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 11:50:00,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048867320] [2023-11-26 11:50:00,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:50:00,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:50:00,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:50:00,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:50:00,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:50:00,181 INFO L87 Difference]: Start difference. First operand 284 states and 375 transitions. Second operand has 6 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-26 11:50:00,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:50:00,813 INFO L93 Difference]: Finished difference Result 315 states and 383 transitions. [2023-11-26 11:50:00,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:50:00,814 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 51 [2023-11-26 11:50:00,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:50:00,816 INFO L225 Difference]: With dead ends: 315 [2023-11-26 11:50:00,816 INFO L226 Difference]: Without dead ends: 313 [2023-11-26 11:50:00,816 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:50:00,817 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 178 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-26 11:50:00,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 248 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 327 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-26 11:50:00,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2023-11-26 11:50:00,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 286. [2023-11-26 11:50:00,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 207 states have (on average 1.5603864734299517) internal successors, (323), 257 states have internal predecessors, (323), 26 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-26 11:50:00,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 375 transitions. [2023-11-26 11:50:00,846 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 375 transitions. Word has length 51 [2023-11-26 11:50:00,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:50:00,846 INFO L495 AbstractCegarLoop]: Abstraction has 286 states and 375 transitions. [2023-11-26 11:50:00,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-26 11:50:00,847 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 375 transitions. [2023-11-26 11:50:00,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-26 11:50:00,847 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:50:00,848 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, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:50:00,858 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-26 11:50:01,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:50:01,059 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-11-26 11:50:01,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:01,059 INFO L85 PathProgramCache]: Analyzing trace with hash 2001832436, now seen corresponding path program 1 times [2023-11-26 11:50:01,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:50:01,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110524584] [2023-11-26 11:50:01,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:01,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:50:01,068 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:50:01,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1185801984] [2023-11-26 11:50:01,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:01,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:50:01,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:50:01,070 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:50:01,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-26 11:50:01,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:01,124 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-26 11:50:01,125 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:50:01,331 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-26 11:50:01,332 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:50:01,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:50:01,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110524584] [2023-11-26 11:50:01,648 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:50:01,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1185801984] [2023-11-26 11:50:01,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1185801984] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:50:01,648 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:50:01,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2023-11-26 11:50:01,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743820805] [2023-11-26 11:50:01,649 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-26 11:50:01,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 11:50:01,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:50:01,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 11:50:01,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-11-26 11:50:01,651 INFO L87 Difference]: Start difference. First operand 286 states and 375 transitions. Second operand has 8 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 4 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) [2023-11-26 11:50:04,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:50:04,120 INFO L93 Difference]: Finished difference Result 313 states and 380 transitions. [2023-11-26 11:50:04,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 11:50:04,120 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 4 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) Word has length 52 [2023-11-26 11:50:04,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:50:04,122 INFO L225 Difference]: With dead ends: 313 [2023-11-26 11:50:04,122 INFO L226 Difference]: Without dead ends: 311 [2023-11-26 11:50:04,123 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-11-26 11:50:04,124 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 252 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 451 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-11-26 11:50:04,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [264 Valid, 305 Invalid, 458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 451 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-11-26 11:50:04,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2023-11-26 11:50:04,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 287. [2023-11-26 11:50:04,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 208 states have (on average 1.5480769230769231) internal successors, (322), 258 states have internal predecessors, (322), 26 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-26 11:50:04,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 374 transitions. [2023-11-26 11:50:04,151 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 374 transitions. Word has length 52 [2023-11-26 11:50:04,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:50:04,151 INFO L495 AbstractCegarLoop]: Abstraction has 287 states and 374 transitions. [2023-11-26 11:50:04,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 4 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) [2023-11-26 11:50:04,152 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 374 transitions. [2023-11-26 11:50:04,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-11-26 11:50:04,152 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:50:04,153 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:50:04,164 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-26 11:50:04,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:50:04,365 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-11-26 11:50:04,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:04,365 INFO L85 PathProgramCache]: Analyzing trace with hash -1959843167, now seen corresponding path program 1 times [2023-11-26 11:50:04,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:50:04,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846523336] [2023-11-26 11:50:04,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:04,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:50:04,388 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:50:04,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1880426385] [2023-11-26 11:50:04,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:04,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:50:04,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:50:04,390 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:50:04,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-26 11:50:04,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:04,450 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 11:50:04,451 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:50:04,458 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-26 11:50:04,458 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:50:04,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:50:04,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846523336] [2023-11-26 11:50:04,458 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:50:04,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1880426385] [2023-11-26 11:50:04,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1880426385] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:50:04,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:50:04,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:50:04,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526834455] [2023-11-26 11:50:04,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:50:04,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:50:04,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:50:04,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:50:04,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:50:04,460 INFO L87 Difference]: Start difference. First operand 287 states and 374 transitions. Second operand has 3 states, 2 states have (on average 15.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-26 11:50:04,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:50:04,512 INFO L93 Difference]: Finished difference Result 287 states and 374 transitions. [2023-11-26 11:50:04,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:50:04,512 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 15.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 59 [2023-11-26 11:50:04,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:50:04,515 INFO L225 Difference]: With dead ends: 287 [2023-11-26 11:50:04,515 INFO L226 Difference]: Without dead ends: 285 [2023-11-26 11:50:04,516 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:50:04,517 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 47 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:50:04,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 201 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:50:04,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2023-11-26 11:50:04,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 285. [2023-11-26 11:50:04,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 208 states have (on average 1.5192307692307692) internal successors, (316), 256 states have internal predecessors, (316), 26 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-26 11:50:04,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 368 transitions. [2023-11-26 11:50:04,549 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 368 transitions. Word has length 59 [2023-11-26 11:50:04,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:50:04,549 INFO L495 AbstractCegarLoop]: Abstraction has 285 states and 368 transitions. [2023-11-26 11:50:04,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 15.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-26 11:50:04,550 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 368 transitions. [2023-11-26 11:50:04,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-11-26 11:50:04,550 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:50:04,551 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:50:04,559 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-26 11:50:04,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-26 11:50:04,759 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-11-26 11:50:04,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:04,759 INFO L85 PathProgramCache]: Analyzing trace with hash -625595905, now seen corresponding path program 1 times [2023-11-26 11:50:04,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:50:04,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759860439] [2023-11-26 11:50:04,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:04,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:50:04,780 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:50:04,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1611428587] [2023-11-26 11:50:04,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:04,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:50:04,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:50:04,783 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:50:04,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-26 11:50:04,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:04,850 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 11:50:04,851 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:50:04,861 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-26 11:50:04,861 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:50:04,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:50:04,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759860439] [2023-11-26 11:50:04,862 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:50:04,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1611428587] [2023-11-26 11:50:04,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1611428587] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:50:04,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:50:04,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:50:04,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765600474] [2023-11-26 11:50:04,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:50:04,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:50:04,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:50:04,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:50:04,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:50:04,864 INFO L87 Difference]: Start difference. First operand 285 states and 368 transitions. Second operand has 3 states, 2 states have (on average 15.5) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-26 11:50:04,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:50:04,921 INFO L93 Difference]: Finished difference Result 285 states and 368 transitions. [2023-11-26 11:50:04,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:50:04,922 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 15.5) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 60 [2023-11-26 11:50:04,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:50:04,925 INFO L225 Difference]: With dead ends: 285 [2023-11-26 11:50:04,925 INFO L226 Difference]: Without dead ends: 283 [2023-11-26 11:50:04,926 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:50:04,927 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 45 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:50:04,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 200 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:50:04,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2023-11-26 11:50:04,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 283. [2023-11-26 11:50:04,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 208 states have (on average 1.4807692307692308) internal successors, (308), 254 states have internal predecessors, (308), 26 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-26 11:50:04,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 360 transitions. [2023-11-26 11:50:04,961 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 360 transitions. Word has length 60 [2023-11-26 11:50:04,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:50:04,962 INFO L495 AbstractCegarLoop]: Abstraction has 283 states and 360 transitions. [2023-11-26 11:50:04,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 15.5) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-26 11:50:04,962 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 360 transitions. [2023-11-26 11:50:04,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-26 11:50:04,963 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:50:04,963 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:50:04,976 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-26 11:50:05,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-26 11:50:05,170 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-11-26 11:50:05,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:05,171 INFO L85 PathProgramCache]: Analyzing trace with hash 2081391361, now seen corresponding path program 1 times [2023-11-26 11:50:05,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:50:05,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093516579] [2023-11-26 11:50:05,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:05,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:50:05,190 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:50:05,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [654407116] [2023-11-26 11:50:05,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:05,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:50:05,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:50:05,193 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:50:05,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-26 11:50:05,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:05,242 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 11:50:05,244 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:50:05,402 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-26 11:50:05,402 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:50:05,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:50:05,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093516579] [2023-11-26 11:50:05,402 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:50:05,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [654407116] [2023-11-26 11:50:05,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [654407116] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:50:05,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:50:05,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:50:05,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991644665] [2023-11-26 11:50:05,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:50:05,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:50:05,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:50:05,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:50:05,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:50:05,405 INFO L87 Difference]: Start difference. First operand 283 states and 360 transitions. Second operand has 5 states, 4 states have (on average 8.0) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-26 11:50:05,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:50:05,667 INFO L93 Difference]: Finished difference Result 311 states and 388 transitions. [2023-11-26 11:50:05,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:50:05,668 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 8.0) internal successors, (32), 5 states have internal predecessors, (32), 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 61 [2023-11-26 11:50:05,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:50:05,670 INFO L225 Difference]: With dead ends: 311 [2023-11-26 11:50:05,670 INFO L226 Difference]: Without dead ends: 310 [2023-11-26 11:50:05,671 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:50:05,671 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 363 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 11:50:05,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [369 Valid, 161 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 11:50:05,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2023-11-26 11:50:05,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 285. [2023-11-26 11:50:05,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 210 states have (on average 1.4761904761904763) internal successors, (310), 256 states have internal predecessors, (310), 26 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-26 11:50:05,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 362 transitions. [2023-11-26 11:50:05,702 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 362 transitions. Word has length 61 [2023-11-26 11:50:05,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:50:05,702 INFO L495 AbstractCegarLoop]: Abstraction has 285 states and 362 transitions. [2023-11-26 11:50:05,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 8.0) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-26 11:50:05,703 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 362 transitions. [2023-11-26 11:50:05,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-26 11:50:05,703 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:50:05,704 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:50:05,715 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-11-26 11:50:05,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-26 11:50:05,910 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-11-26 11:50:05,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:05,911 INFO L85 PathProgramCache]: Analyzing trace with hash 2081405263, now seen corresponding path program 1 times [2023-11-26 11:50:05,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:50:05,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985915143] [2023-11-26 11:50:05,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:05,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:50:05,920 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:50:05,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [966710673] [2023-11-26 11:50:05,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:05,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:50:05,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:50:05,922 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:50:05,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-26 11:50:05,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:05,986 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 11:50:05,988 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:50:06,114 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-26 11:50:06,114 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:50:06,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:50:06,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985915143] [2023-11-26 11:50:06,115 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:50:06,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [966710673] [2023-11-26 11:50:06,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [966710673] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:50:06,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:50:06,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:50:06,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559200487] [2023-11-26 11:50:06,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:50:06,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:50:06,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:50:06,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:50:06,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:50:06,117 INFO L87 Difference]: Start difference. First operand 285 states and 362 transitions. Second operand has 5 states, 4 states have (on average 8.0) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-26 11:50:06,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:50:06,360 INFO L93 Difference]: Finished difference Result 310 states and 387 transitions. [2023-11-26 11:50:06,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:50:06,361 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 8.0) internal successors, (32), 5 states have internal predecessors, (32), 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 61 [2023-11-26 11:50:06,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:50:06,363 INFO L225 Difference]: With dead ends: 310 [2023-11-26 11:50:06,363 INFO L226 Difference]: Without dead ends: 309 [2023-11-26 11:50:06,364 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:50:06,364 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 196 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 11:50:06,365 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 178 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 11:50:06,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2023-11-26 11:50:06,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 285. [2023-11-26 11:50:06,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 210 states have (on average 1.4714285714285715) internal successors, (309), 256 states have internal predecessors, (309), 26 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-26 11:50:06,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 361 transitions. [2023-11-26 11:50:06,416 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 361 transitions. Word has length 61 [2023-11-26 11:50:06,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:50:06,416 INFO L495 AbstractCegarLoop]: Abstraction has 285 states and 361 transitions. [2023-11-26 11:50:06,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 8.0) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-26 11:50:06,417 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 361 transitions. [2023-11-26 11:50:06,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-11-26 11:50:06,417 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:50:06,418 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:50:06,434 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-11-26 11:50:06,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:50:06,634 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-11-26 11:50:06,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:06,635 INFO L85 PathProgramCache]: Analyzing trace with hash 99053827, now seen corresponding path program 1 times [2023-11-26 11:50:06,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:50:06,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555502218] [2023-11-26 11:50:06,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:06,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:50:06,642 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:50:06,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [566737543] [2023-11-26 11:50:06,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:06,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:50:06,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:50:06,644 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:50:06,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-26 11:50:06,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:06,713 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 11:50:06,714 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:50:06,811 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-26 11:50:06,811 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:50:06,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:50:06,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555502218] [2023-11-26 11:50:06,812 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:50:06,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [566737543] [2023-11-26 11:50:06,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [566737543] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:50:06,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:50:06,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:50:06,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844645907] [2023-11-26 11:50:06,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:50:06,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:50:06,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:50:06,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:50:06,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:50:06,815 INFO L87 Difference]: Start difference. First operand 285 states and 361 transitions. Second operand has 3 states, 2 states have (on average 16.5) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-26 11:50:07,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:50:07,479 INFO L93 Difference]: Finished difference Result 305 states and 364 transitions. [2023-11-26 11:50:07,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:50:07,480 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 16.5) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 62 [2023-11-26 11:50:07,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:50:07,482 INFO L225 Difference]: With dead ends: 305 [2023-11-26 11:50:07,483 INFO L226 Difference]: Without dead ends: 303 [2023-11-26 11:50:07,483 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:50:07,484 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 49 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-26 11:50:07,484 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 151 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-26 11:50:07,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2023-11-26 11:50:07,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 285. [2023-11-26 11:50:07,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 210 states have (on average 1.457142857142857) internal successors, (306), 256 states have internal predecessors, (306), 26 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-26 11:50:07,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 358 transitions. [2023-11-26 11:50:07,522 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 358 transitions. Word has length 62 [2023-11-26 11:50:07,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:50:07,523 INFO L495 AbstractCegarLoop]: Abstraction has 285 states and 358 transitions. [2023-11-26 11:50:07,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 16.5) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-26 11:50:07,523 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 358 transitions. [2023-11-26 11:50:07,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-11-26 11:50:07,524 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:50:07,524 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:50:07,536 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-11-26 11:50:07,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:50:07,730 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-11-26 11:50:07,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:07,731 INFO L85 PathProgramCache]: Analyzing trace with hash 287282565, now seen corresponding path program 1 times [2023-11-26 11:50:07,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:50:07,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517935496] [2023-11-26 11:50:07,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:07,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:50:07,742 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:50:07,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2134973174] [2023-11-26 11:50:07,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:07,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:50:07,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:50:07,744 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:50:07,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-26 11:50:07,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:07,809 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 11:50:07,810 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:50:07,917 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-26 11:50:07,917 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:50:07,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:50:07,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517935496] [2023-11-26 11:50:07,918 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:50:07,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2134973174] [2023-11-26 11:50:07,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2134973174] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:50:07,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:50:07,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:50:07,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447222923] [2023-11-26 11:50:07,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:50:07,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:50:07,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:50:07,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:50:07,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:50:07,920 INFO L87 Difference]: Start difference. First operand 285 states and 358 transitions. Second operand has 3 states, 2 states have (on average 17.5) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-26 11:50:08,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:50:08,137 INFO L93 Difference]: Finished difference Result 372 states and 435 transitions. [2023-11-26 11:50:08,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:50:08,137 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 17.5) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 64 [2023-11-26 11:50:08,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:50:08,140 INFO L225 Difference]: With dead ends: 372 [2023-11-26 11:50:08,140 INFO L226 Difference]: Without dead ends: 370 [2023-11-26 11:50:08,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:50:08,141 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 70 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 11:50:08,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 135 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 11:50:08,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2023-11-26 11:50:08,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 293. [2023-11-26 11:50:08,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 218 states have (on average 1.4495412844036697) internal successors, (316), 264 states have internal predecessors, (316), 26 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-26 11:50:08,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 368 transitions. [2023-11-26 11:50:08,192 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 368 transitions. Word has length 64 [2023-11-26 11:50:08,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:50:08,192 INFO L495 AbstractCegarLoop]: Abstraction has 293 states and 368 transitions. [2023-11-26 11:50:08,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 17.5) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-26 11:50:08,193 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 368 transitions. [2023-11-26 11:50:08,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-11-26 11:50:08,193 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:50:08,194 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:50:08,202 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-11-26 11:50:08,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:50:08,398 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-11-26 11:50:08,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:08,399 INFO L85 PathProgramCache]: Analyzing trace with hash 701450949, now seen corresponding path program 1 times [2023-11-26 11:50:08,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:50:08,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306852059] [2023-11-26 11:50:08,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:08,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:50:08,408 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:50:08,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1187654444] [2023-11-26 11:50:08,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:08,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:50:08,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:50:08,410 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:50:08,426 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-26 11:50:08,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:08,467 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 11:50:08,468 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:50:08,581 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-26 11:50:08,581 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:50:08,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:50:08,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306852059] [2023-11-26 11:50:08,582 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:50:08,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1187654444] [2023-11-26 11:50:08,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1187654444] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:50:08,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:50:08,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:50:08,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636398737] [2023-11-26 11:50:08,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:50:08,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:50:08,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:50:08,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:50:08,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:50:08,584 INFO L87 Difference]: Start difference. First operand 293 states and 368 transitions. Second operand has 3 states, 2 states have (on average 17.5) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-26 11:50:08,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:50:08,892 INFO L93 Difference]: Finished difference Result 293 states and 368 transitions. [2023-11-26 11:50:08,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:50:08,893 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 17.5) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 64 [2023-11-26 11:50:08,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:50:08,896 INFO L225 Difference]: With dead ends: 293 [2023-11-26 11:50:08,896 INFO L226 Difference]: Without dead ends: 291 [2023-11-26 11:50:08,896 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:50:08,897 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 78 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 11:50:08,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 84 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 11:50:08,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2023-11-26 11:50:08,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 291. [2023-11-26 11:50:08,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 218 states have (on average 1.4311926605504588) internal successors, (312), 262 states have internal predecessors, (312), 26 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-26 11:50:08,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 364 transitions. [2023-11-26 11:50:08,933 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 364 transitions. Word has length 64 [2023-11-26 11:50:08,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:50:08,934 INFO L495 AbstractCegarLoop]: Abstraction has 291 states and 364 transitions. [2023-11-26 11:50:08,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 17.5) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-26 11:50:08,934 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 364 transitions. [2023-11-26 11:50:08,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-26 11:50:08,935 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:50:08,935 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:50:08,947 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-11-26 11:50:09,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:50:09,142 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-11-26 11:50:09,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:09,142 INFO L85 PathProgramCache]: Analyzing trace with hash 1909443445, now seen corresponding path program 1 times [2023-11-26 11:50:09,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:50:09,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872814331] [2023-11-26 11:50:09,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:09,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:50:09,153 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:50:09,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1757052848] [2023-11-26 11:50:09,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:09,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:50:09,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:50:09,155 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:50:09,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-26 11:50:09,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:09,223 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 11:50:09,225 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:50:09,448 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-26 11:50:09,449 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:50:09,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:50:09,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872814331] [2023-11-26 11:50:09,596 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:50:09,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1757052848] [2023-11-26 11:50:09,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1757052848] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:50:09,597 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:50:09,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2023-11-26 11:50:09,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999460895] [2023-11-26 11:50:09,597 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-26 11:50:09,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:50:09,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:50:09,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:50:09,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:50:09,599 INFO L87 Difference]: Start difference. First operand 291 states and 364 transitions. Second operand has 4 states, 3 states have (on average 12.666666666666666) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-26 11:50:10,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:50:10,018 INFO L93 Difference]: Finished difference Result 364 states and 424 transitions. [2023-11-26 11:50:10,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:50:10,019 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.666666666666666) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 67 [2023-11-26 11:50:10,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:50:10,021 INFO L225 Difference]: With dead ends: 364 [2023-11-26 11:50:10,021 INFO L226 Difference]: Without dead ends: 362 [2023-11-26 11:50:10,022 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:50:10,022 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 63 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-26 11:50:10,022 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 175 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-26 11:50:10,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2023-11-26 11:50:10,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 297. [2023-11-26 11:50:10,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 223 states have (on average 1.4349775784753362) internal successors, (320), 267 states have internal predecessors, (320), 27 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-11-26 11:50:10,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 374 transitions. [2023-11-26 11:50:10,054 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 374 transitions. Word has length 67 [2023-11-26 11:50:10,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:50:10,055 INFO L495 AbstractCegarLoop]: Abstraction has 297 states and 374 transitions. [2023-11-26 11:50:10,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.666666666666666) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-26 11:50:10,056 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 374 transitions. [2023-11-26 11:50:10,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-26 11:50:10,056 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:50:10,057 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:50:10,062 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-11-26 11:50:10,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:50:10,262 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-11-26 11:50:10,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:10,263 INFO L85 PathProgramCache]: Analyzing trace with hash -936795298, now seen corresponding path program 1 times [2023-11-26 11:50:10,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:50:10,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704956196] [2023-11-26 11:50:10,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:10,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:50:10,271 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:50:10,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [427466613] [2023-11-26 11:50:10,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:10,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:50:10,271 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:50:10,272 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:50:10,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-11-26 11:50:10,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:10,321 INFO L262 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 11:50:10,323 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:50:10,521 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-26 11:50:10,522 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:50:10,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:50:10,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704956196] [2023-11-26 11:50:10,651 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:50:10,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [427466613] [2023-11-26 11:50:10,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [427466613] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:50:10,651 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:50:10,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2023-11-26 11:50:10,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851398876] [2023-11-26 11:50:10,652 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-26 11:50:10,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:50:10,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:50:10,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:50:10,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:50:10,653 INFO L87 Difference]: Start difference. First operand 297 states and 374 transitions. Second operand has 4 states, 3 states have (on average 13.0) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-26 11:50:10,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:50:10,948 INFO L93 Difference]: Finished difference Result 362 states and 422 transitions. [2023-11-26 11:50:10,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:50:10,949 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 13.0) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 68 [2023-11-26 11:50:10,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:50:10,951 INFO L225 Difference]: With dead ends: 362 [2023-11-26 11:50:10,951 INFO L226 Difference]: Without dead ends: 360 [2023-11-26 11:50:10,952 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:50:10,952 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 61 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 11:50:10,953 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 175 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 11:50:10,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2023-11-26 11:50:10,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 298. [2023-11-26 11:50:10,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 224 states have (on average 1.4285714285714286) internal successors, (320), 268 states have internal predecessors, (320), 27 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-11-26 11:50:10,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 374 transitions. [2023-11-26 11:50:10,985 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 374 transitions. Word has length 68 [2023-11-26 11:50:10,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:50:10,985 INFO L495 AbstractCegarLoop]: Abstraction has 298 states and 374 transitions. [2023-11-26 11:50:10,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 13.0) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-26 11:50:10,986 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 374 transitions. [2023-11-26 11:50:10,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-26 11:50:10,987 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:50:10,987 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:50:10,992 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-11-26 11:50:11,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-11-26 11:50:11,193 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-11-26 11:50:11,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:11,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1024116887, now seen corresponding path program 1 times [2023-11-26 11:50:11,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:50:11,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937934209] [2023-11-26 11:50:11,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:11,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:50:11,200 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:50:11,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [535185028] [2023-11-26 11:50:11,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:11,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:50:11,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:50:11,202 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:50:11,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-11-26 11:50:11,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:11,255 INFO L262 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 11:50:11,257 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:50:11,302 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-26 11:50:11,302 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:50:11,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:50:11,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937934209] [2023-11-26 11:50:11,303 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:50:11,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [535185028] [2023-11-26 11:50:11,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [535185028] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:50:11,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:50:11,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:50:11,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832606765] [2023-11-26 11:50:11,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:50:11,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:50:11,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:50:11,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:50:11,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:50:11,305 INFO L87 Difference]: Start difference. First operand 298 states and 374 transitions. Second operand has 3 states, 2 states have (on average 18.5) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-26 11:50:11,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:50:11,644 INFO L93 Difference]: Finished difference Result 362 states and 422 transitions. [2023-11-26 11:50:11,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:50:11,645 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 18.5) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 69 [2023-11-26 11:50:11,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:50:11,648 INFO L225 Difference]: With dead ends: 362 [2023-11-26 11:50:11,648 INFO L226 Difference]: Without dead ends: 358 [2023-11-26 11:50:11,648 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:50:11,649 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 59 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 11:50:11,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 189 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 11:50:11,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2023-11-26 11:50:11,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 298. [2023-11-26 11:50:11,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 224 states have (on average 1.4107142857142858) internal successors, (316), 268 states have internal predecessors, (316), 27 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-11-26 11:50:11,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 370 transitions. [2023-11-26 11:50:11,681 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 370 transitions. Word has length 69 [2023-11-26 11:50:11,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:50:11,682 INFO L495 AbstractCegarLoop]: Abstraction has 298 states and 370 transitions. [2023-11-26 11:50:11,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 18.5) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-26 11:50:11,682 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 370 transitions. [2023-11-26 11:50:11,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-11-26 11:50:11,683 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:50:11,683 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:50:11,694 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-11-26 11:50:11,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-26 11:50:11,889 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr38ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-11-26 11:50:11,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:11,889 INFO L85 PathProgramCache]: Analyzing trace with hash 169429588, now seen corresponding path program 1 times [2023-11-26 11:50:11,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:50:11,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196585878] [2023-11-26 11:50:11,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:11,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:50:11,900 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:50:11,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [818203750] [2023-11-26 11:50:11,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:11,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:50:11,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:50:11,902 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:50:11,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-11-26 11:50:11,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:11,958 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-26 11:50:11,960 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:50:12,038 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2023-11-26 11:50:12,038 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:50:12,165 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2023-11-26 11:50:12,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:50:12,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196585878] [2023-11-26 11:50:12,166 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:50:12,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [818203750] [2023-11-26 11:50:12,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [818203750] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:50:12,167 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:50:12,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-26 11:50:12,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922438156] [2023-11-26 11:50:12,167 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 11:50:12,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-26 11:50:12,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:50:12,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-26 11:50:12,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-26 11:50:12,170 INFO L87 Difference]: Start difference. First operand 298 states and 370 transitions. Second operand has 9 states, 8 states have (on average 7.375) internal successors, (59), 9 states have internal predecessors, (59), 5 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2023-11-26 11:50:12,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:50:12,774 INFO L93 Difference]: Finished difference Result 308 states and 372 transitions. [2023-11-26 11:50:12,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 11:50:12,774 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.375) internal successors, (59), 9 states have internal predecessors, (59), 5 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) Word has length 72 [2023-11-26 11:50:12,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:50:12,776 INFO L225 Difference]: With dead ends: 308 [2023-11-26 11:50:12,776 INFO L226 Difference]: Without dead ends: 307 [2023-11-26 11:50:12,777 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-11-26 11:50:12,777 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 257 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 539 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-26 11:50:12,778 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 156 Invalid, 555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 539 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-26 11:50:12,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2023-11-26 11:50:12,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 297. [2023-11-26 11:50:12,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 224 states have (on average 1.3973214285714286) internal successors, (313), 267 states have internal predecessors, (313), 27 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-11-26 11:50:12,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 367 transitions. [2023-11-26 11:50:12,813 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 367 transitions. Word has length 72 [2023-11-26 11:50:12,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:50:12,817 INFO L495 AbstractCegarLoop]: Abstraction has 297 states and 367 transitions. [2023-11-26 11:50:12,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.375) internal successors, (59), 9 states have internal predecessors, (59), 5 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2023-11-26 11:50:12,818 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 367 transitions. [2023-11-26 11:50:12,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-11-26 11:50:12,819 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:50:12,819 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:50:12,825 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-11-26 11:50:13,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-26 11:50:13,025 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-11-26 11:50:13,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:13,025 INFO L85 PathProgramCache]: Analyzing trace with hash 628819385, now seen corresponding path program 1 times [2023-11-26 11:50:13,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:50:13,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467775164] [2023-11-26 11:50:13,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:13,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:50:13,036 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:50:13,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [230889022] [2023-11-26 11:50:13,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:13,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:50:13,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:50:13,038 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:50:13,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-11-26 11:50:13,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:13,096 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 11:50:13,098 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:50:13,162 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-11-26 11:50:13,162 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:50:13,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:50:13,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467775164] [2023-11-26 11:50:13,162 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:50:13,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [230889022] [2023-11-26 11:50:13,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [230889022] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:50:13,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:50:13,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:50:13,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864220676] [2023-11-26 11:50:13,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:50:13,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:50:13,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:50:13,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:50:13,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:50:13,164 INFO L87 Difference]: Start difference. First operand 297 states and 367 transitions. Second operand has 4 states, 3 states have (on average 13.666666666666666) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-26 11:50:13,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:50:13,545 INFO L93 Difference]: Finished difference Result 356 states and 414 transitions. [2023-11-26 11:50:13,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:50:13,546 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 13.666666666666666) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 71 [2023-11-26 11:50:13,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:50:13,548 INFO L225 Difference]: With dead ends: 356 [2023-11-26 11:50:13,548 INFO L226 Difference]: Without dead ends: 355 [2023-11-26 11:50:13,548 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:50:13,549 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 134 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 11:50:13,549 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 158 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 11:50:13,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2023-11-26 11:50:13,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 297. [2023-11-26 11:50:13,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 224 states have (on average 1.3928571428571428) internal successors, (312), 267 states have internal predecessors, (312), 27 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-11-26 11:50:13,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 366 transitions. [2023-11-26 11:50:13,609 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 366 transitions. Word has length 71 [2023-11-26 11:50:13,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:50:13,610 INFO L495 AbstractCegarLoop]: Abstraction has 297 states and 366 transitions. [2023-11-26 11:50:13,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 13.666666666666666) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-26 11:50:13,610 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 366 transitions. [2023-11-26 11:50:13,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-11-26 11:50:13,610 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:50:13,611 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:50:13,617 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2023-11-26 11:50:13,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-26 11:50:13,811 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr39ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-11-26 11:50:13,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:13,812 INFO L85 PathProgramCache]: Analyzing trace with hash 957350077, now seen corresponding path program 1 times [2023-11-26 11:50:13,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:50:13,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788229830] [2023-11-26 11:50:13,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:13,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:50:13,830 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:50:13,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1738134529] [2023-11-26 11:50:13,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:13,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:50:13,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:50:13,839 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:50:13,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-11-26 11:50:13,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:13,923 INFO L262 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 11:50:13,925 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:50:14,421 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2023-11-26 11:50:14,421 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:50:14,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:50:14,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788229830] [2023-11-26 11:50:14,422 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:50:14,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1738134529] [2023-11-26 11:50:14,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1738134529] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:50:14,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:50:14,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 11:50:14,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754322345] [2023-11-26 11:50:14,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:50:14,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 11:50:14,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:50:14,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 11:50:14,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:50:14,424 INFO L87 Difference]: Start difference. First operand 297 states and 366 transitions. Second operand has 7 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 3 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-26 11:50:15,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:50:15,855 INFO L93 Difference]: Finished difference Result 313 states and 369 transitions. [2023-11-26 11:50:15,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 11:50:15,855 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 3 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 73 [2023-11-26 11:50:15,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:50:15,857 INFO L225 Difference]: With dead ends: 313 [2023-11-26 11:50:15,857 INFO L226 Difference]: Without dead ends: 311 [2023-11-26 11:50:15,857 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-26 11:50:15,858 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 211 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-26 11:50:15,858 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 250 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-26 11:50:15,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2023-11-26 11:50:15,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 296. [2023-11-26 11:50:15,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 223 states have (on average 1.3856502242152466) internal successors, (309), 266 states have internal predecessors, (309), 27 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-11-26 11:50:15,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 363 transitions. [2023-11-26 11:50:15,893 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 363 transitions. Word has length 73 [2023-11-26 11:50:15,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:50:15,894 INFO L495 AbstractCegarLoop]: Abstraction has 296 states and 363 transitions. [2023-11-26 11:50:15,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 3 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-26 11:50:15,894 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 363 transitions. [2023-11-26 11:50:15,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-11-26 11:50:15,895 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:50:15,895 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:50:15,903 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2023-11-26 11:50:16,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-26 11:50:16,101 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-11-26 11:50:16,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:16,101 INFO L85 PathProgramCache]: Analyzing trace with hash -1981435486, now seen corresponding path program 1 times [2023-11-26 11:50:16,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:50:16,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263626418] [2023-11-26 11:50:16,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:16,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:50:16,108 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:50:16,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [930010134] [2023-11-26 11:50:16,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:16,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:50:16,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:50:16,109 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:50:16,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-11-26 11:50:16,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:16,161 INFO L262 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 11:50:16,164 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:50:16,224 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2023-11-26 11:50:16,224 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:50:16,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:50:16,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263626418] [2023-11-26 11:50:16,225 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:50:16,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [930010134] [2023-11-26 11:50:16,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [930010134] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:50:16,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:50:16,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:50:16,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175937989] [2023-11-26 11:50:16,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:50:16,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:50:16,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:50:16,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:50:16,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:50:16,226 INFO L87 Difference]: Start difference. First operand 296 states and 363 transitions. Second operand has 4 states, 3 states have (on average 13.666666666666666) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-26 11:50:16,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:50:16,773 INFO L93 Difference]: Finished difference Result 355 states and 410 transitions. [2023-11-26 11:50:16,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:50:16,774 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 13.666666666666666) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 72 [2023-11-26 11:50:16,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:50:16,775 INFO L225 Difference]: With dead ends: 355 [2023-11-26 11:50:16,775 INFO L226 Difference]: Without dead ends: 352 [2023-11-26 11:50:16,776 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:50:16,776 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 76 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-26 11:50:16,777 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 209 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-26 11:50:16,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2023-11-26 11:50:16,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 299. [2023-11-26 11:50:16,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 226 states have (on average 1.3805309734513274) internal successors, (312), 269 states have internal predecessors, (312), 27 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-11-26 11:50:16,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 366 transitions. [2023-11-26 11:50:16,812 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 366 transitions. Word has length 72 [2023-11-26 11:50:16,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:50:16,813 INFO L495 AbstractCegarLoop]: Abstraction has 299 states and 366 transitions. [2023-11-26 11:50:16,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 13.666666666666666) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-26 11:50:16,813 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 366 transitions. [2023-11-26 11:50:16,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-26 11:50:16,814 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:50:16,814 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:50:16,820 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2023-11-26 11:50:17,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-11-26 11:50:17,020 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-11-26 11:50:17,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:17,020 INFO L85 PathProgramCache]: Analyzing trace with hash 1002095526, now seen corresponding path program 1 times [2023-11-26 11:50:17,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:50:17,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370926954] [2023-11-26 11:50:17,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:17,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:50:17,030 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:50:17,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [84488433] [2023-11-26 11:50:17,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:17,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:50:17,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:50:17,032 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:50:17,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-11-26 11:50:17,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:17,091 INFO L262 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-26 11:50:17,093 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:50:17,507 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-26 11:50:17,507 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:50:17,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:50:17,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370926954] [2023-11-26 11:50:17,710 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:50:17,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [84488433] [2023-11-26 11:50:17,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [84488433] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:50:17,711 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:50:17,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2023-11-26 11:50:17,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231031621] [2023-11-26 11:50:17,711 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-26 11:50:17,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-26 11:50:17,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:50:17,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-26 11:50:17,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-11-26 11:50:17,712 INFO L87 Difference]: Start difference. First operand 299 states and 366 transitions. Second operand has 9 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 4 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-26 11:50:19,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:50:19,171 INFO L93 Difference]: Finished difference Result 493 states and 582 transitions. [2023-11-26 11:50:19,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-26 11:50:19,172 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 4 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 78 [2023-11-26 11:50:19,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:50:19,175 INFO L225 Difference]: With dead ends: 493 [2023-11-26 11:50:19,175 INFO L226 Difference]: Without dead ends: 492 [2023-11-26 11:50:19,175 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2023-11-26 11:50:19,176 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 318 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 927 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-26 11:50:19,176 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [324 Valid, 421 Invalid, 943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 927 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-26 11:50:19,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2023-11-26 11:50:19,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 309. [2023-11-26 11:50:19,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 235 states have (on average 1.3659574468085107) internal successors, (321), 278 states have internal predecessors, (321), 28 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2023-11-26 11:50:19,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 377 transitions. [2023-11-26 11:50:19,216 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 377 transitions. Word has length 78 [2023-11-26 11:50:19,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:50:19,216 INFO L495 AbstractCegarLoop]: Abstraction has 309 states and 377 transitions. [2023-11-26 11:50:19,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 4 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-26 11:50:19,217 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 377 transitions. [2023-11-26 11:50:19,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-11-26 11:50:19,218 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:50:19,218 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:50:19,223 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2023-11-26 11:50:19,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:50:19,423 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-11-26 11:50:19,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:19,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1000190298, now seen corresponding path program 1 times [2023-11-26 11:50:19,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:50:19,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355876137] [2023-11-26 11:50:19,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:19,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:50:19,432 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:50:19,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1177449477] [2023-11-26 11:50:19,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:19,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:50:19,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:50:19,434 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:50:19,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-11-26 11:50:19,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:19,496 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-26 11:50:19,508 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:50:19,942 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 6 proven. 16 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-26 11:50:19,943 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:50:20,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:50:20,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355876137] [2023-11-26 11:50:20,346 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:50:20,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1177449477] [2023-11-26 11:50:20,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1177449477] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:50:20,346 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:50:20,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2023-11-26 11:50:20,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322707319] [2023-11-26 11:50:20,347 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-26 11:50:20,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-26 11:50:20,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:50:20,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-26 11:50:20,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-11-26 11:50:20,348 INFO L87 Difference]: Start difference. First operand 309 states and 377 transitions. Second operand has 9 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 4 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-26 11:50:21,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:50:21,757 INFO L93 Difference]: Finished difference Result 473 states and 552 transitions. [2023-11-26 11:50:21,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-26 11:50:21,758 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 4 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 79 [2023-11-26 11:50:21,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:50:21,761 INFO L225 Difference]: With dead ends: 473 [2023-11-26 11:50:21,761 INFO L226 Difference]: Without dead ends: 469 [2023-11-26 11:50:21,762 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2023-11-26 11:50:21,762 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 707 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 917 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 713 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 917 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-26 11:50:21,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [713 Valid, 311 Invalid, 968 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 917 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-26 11:50:21,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2023-11-26 11:50:21,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 388. [2023-11-26 11:50:21,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 306 states have (on average 1.434640522875817) internal successors, (439), 349 states have internal predecessors, (439), 36 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2023-11-26 11:50:21,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 511 transitions. [2023-11-26 11:50:21,818 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 511 transitions. Word has length 79 [2023-11-26 11:50:21,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:50:21,818 INFO L495 AbstractCegarLoop]: Abstraction has 388 states and 511 transitions. [2023-11-26 11:50:21,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 4 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-26 11:50:21,818 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 511 transitions. [2023-11-26 11:50:21,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-26 11:50:21,819 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:50:21,820 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:50:21,831 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462eefdf-7c18-4fec-b4f7-751992d7b0f6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0