./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound20.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_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/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_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound20.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/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_13c99097-bcfb-46c3-838d-311ad715aa9e/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 9e9911e775b3214ba13077b05d83e9364947724e9afa3bb89f51b07ee325bd90 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:57:09,725 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:57:09,862 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-26 11:57:09,871 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:57:09,872 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:57:09,916 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:57:09,917 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:57:09,918 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:57:09,919 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:57:09,925 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:57:09,926 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:57:09,927 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:57:09,928 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:57:09,930 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:57:09,931 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:57:09,932 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:57:09,932 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 11:57:09,933 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:57:09,934 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:57:09,934 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:57:09,935 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:57:09,935 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 11:57:09,936 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:57:09,937 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 11:57:09,937 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-26 11:57:09,938 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 11:57:09,938 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:57:09,939 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:57:09,939 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:57:09,940 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:57:09,942 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:57:09,942 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:57:09,943 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:57:09,943 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:57:09,943 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:57:09,944 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:57:09,944 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 11:57:09,945 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:57:09,945 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:57:09,945 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:57:09,946 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:57:09,946 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 11:57:09,947 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:57:09,947 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:57:09,948 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_13c99097-bcfb-46c3-838d-311ad715aa9e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9e9911e775b3214ba13077b05d83e9364947724e9afa3bb89f51b07ee325bd90 [2023-11-26 11:57:10,354 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:57:10,385 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:57:10,388 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:57:10,389 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:57:10,390 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:57:10,391 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound20.c [2023-11-26 11:57:13,576 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:57:13,807 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:57:13,808 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound20.c [2023-11-26 11:57:13,818 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/data/aa13e3820/c27934786cee45c2b68fd8940c17ff57/FLAG6c51a3221 [2023-11-26 11:57:13,842 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/data/aa13e3820/c27934786cee45c2b68fd8940c17ff57 [2023-11-26 11:57:13,848 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:57:13,850 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:57:13,855 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:57:13,855 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:57:13,861 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:57:13,861 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:57:13" (1/1) ... [2023-11-26 11:57:13,863 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c6ab578 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:13, skipping insertion in model container [2023-11-26 11:57:13,863 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:57:13" (1/1) ... [2023-11-26 11:57:13,893 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:57:14,127 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:57:14,139 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:57:14,169 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:57:14,185 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:57:14,186 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:14 WrapperNode [2023-11-26 11:57:14,190 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:57:14,192 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:57:14,192 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:57:14,193 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:57:14,201 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:14" (1/1) ... [2023-11-26 11:57:14,228 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:14" (1/1) ... [2023-11-26 11:57:14,257 INFO L138 Inliner]: procedures = 14, calls = 18, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 160 [2023-11-26 11:57:14,257 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:57:14,258 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:57:14,258 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:57:14,259 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:57:14,271 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:14" (1/1) ... [2023-11-26 11:57:14,271 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:14" (1/1) ... [2023-11-26 11:57:14,274 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:14" (1/1) ... [2023-11-26 11:57:14,288 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 11:57:14,289 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:14" (1/1) ... [2023-11-26 11:57:14,289 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:14" (1/1) ... [2023-11-26 11:57:14,294 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:14" (1/1) ... [2023-11-26 11:57:14,298 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:14" (1/1) ... [2023-11-26 11:57:14,300 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:14" (1/1) ... [2023-11-26 11:57:14,302 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:14" (1/1) ... [2023-11-26 11:57:14,304 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:57:14,306 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:57:14,306 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:57:14,306 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:57:14,307 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:14" (1/1) ... [2023-11-26 11:57:14,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:57:14,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:57:14,341 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:57:14,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:57:14,390 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:57:14,391 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-26 11:57:14,391 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-26 11:57:14,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 11:57:14,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:57:14,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:57:14,392 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-26 11:57:14,392 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-26 11:57:14,473 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:57:14,476 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:57:15,071 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:57:15,121 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:57:15,121 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-26 11:57:15,122 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:57:15 BoogieIcfgContainer [2023-11-26 11:57:15,122 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:57:15,134 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:57:15,134 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:57:15,138 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:57:15,138 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:57:13" (1/3) ... [2023-11-26 11:57:15,139 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d4b097d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:57:15, skipping insertion in model container [2023-11-26 11:57:15,139 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:14" (2/3) ... [2023-11-26 11:57:15,139 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d4b097d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:57:15, skipping insertion in model container [2023-11-26 11:57:15,140 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:57:15" (3/3) ... [2023-11-26 11:57:15,141 INFO L112 eAbstractionObserver]: Analyzing ICFG egcd2-ll_unwindbound20.c [2023-11-26 11:57:15,163 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:57:15,163 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 68 error locations. [2023-11-26 11:57:15,227 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:57:15,235 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;@36a316ca, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:57:15,235 INFO L358 AbstractCegarLoop]: Starting to check reachability of 68 error locations. [2023-11-26 11:57:15,242 INFO L276 IsEmpty]: Start isEmpty. Operand has 165 states, 84 states have (on average 1.9047619047619047) internal successors, (160), 153 states have internal predecessors, (160), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-26 11:57:15,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-26 11:57:15,252 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:57:15,252 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:57:15,253 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-11-26 11:57:15,258 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:57:15,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1933443539, now seen corresponding path program 1 times [2023-11-26 11:57:15,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:57:15,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867276042] [2023-11-26 11:57:15,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:15,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:57:15,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:57:15,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:57:15,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867276042] [2023-11-26 11:57:15,436 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-26 11:57:15,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1647605359] [2023-11-26 11:57:15,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:15,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:15,438 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:57:15,445 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:57:15,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 11:57:15,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:57:15,535 INFO L262 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-26 11:57:15,542 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:57:15,575 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 11:57:15,575 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:57:15,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1647605359] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:57:15,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:57:15,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:57:15,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208454574] [2023-11-26 11:57:15,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:57:15,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-26 11:57:15,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:57:15,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-26 11:57:15,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 11:57:15,636 INFO L87 Difference]: Start difference. First operand has 165 states, 84 states have (on average 1.9047619047619047) internal successors, (160), 153 states have internal predecessors, (160), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-26 11:57:15,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:57:15,726 INFO L93 Difference]: Finished difference Result 327 states and 367 transitions. [2023-11-26 11:57:15,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-26 11:57:15,729 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 13 [2023-11-26 11:57:15,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:57:15,743 INFO L225 Difference]: With dead ends: 327 [2023-11-26 11:57:15,743 INFO L226 Difference]: Without dead ends: 161 [2023-11-26 11:57:15,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 11:57:15,754 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:57:15,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 173 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:57:15,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2023-11-26 11:57:15,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2023-11-26 11:57:15,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 83 states have (on average 1.8433734939759037) internal successors, (153), 150 states have internal predecessors, (153), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-26 11:57:15,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 171 transitions. [2023-11-26 11:57:15,837 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 171 transitions. Word has length 13 [2023-11-26 11:57:15,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:57:15,838 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 171 transitions. [2023-11-26 11:57:15,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-26 11:57:15,841 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 171 transitions. [2023-11-26 11:57:15,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-26 11:57:15,844 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:57:15,845 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:57:15,861 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-26 11:57:16,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-26 11:57:16,057 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-11-26 11:57:16,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:57:16,058 INFO L85 PathProgramCache]: Analyzing trace with hash 1970343789, now seen corresponding path program 1 times [2023-11-26 11:57:16,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:57:16,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968148463] [2023-11-26 11:57:16,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:16,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:57:16,077 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:57:16,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [750196179] [2023-11-26 11:57:16,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:16,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:16,078 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:57:16,079 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:57:16,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 11:57:16,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:57:16,159 INFO L262 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-26 11:57:16,161 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:57:16,282 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 11:57:16,282 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:57:16,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:57:16,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968148463] [2023-11-26 11:57:16,283 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:57:16,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [750196179] [2023-11-26 11:57:16,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [750196179] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:57:16,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:57:16,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 11:57:16,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110863001] [2023-11-26 11:57:16,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:57:16,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 11:57:16,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:57:16,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 11:57:16,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:57:16,288 INFO L87 Difference]: Start difference. First operand 161 states and 171 transitions. Second operand has 7 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-26 11:57:16,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:57:16,591 INFO L93 Difference]: Finished difference Result 161 states and 171 transitions. [2023-11-26 11:57:16,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 11:57:16,592 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 13 [2023-11-26 11:57:16,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:57:16,594 INFO L225 Difference]: With dead ends: 161 [2023-11-26 11:57:16,594 INFO L226 Difference]: Without dead ends: 159 [2023-11-26 11:57:16,595 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 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 11:57:16,597 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 431 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 438 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 11:57:16,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [438 Valid, 248 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 11:57:16,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2023-11-26 11:57:16,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2023-11-26 11:57:16,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 83 states have (on average 1.819277108433735) internal successors, (151), 148 states have internal predecessors, (151), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-26 11:57:16,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 169 transitions. [2023-11-26 11:57:16,614 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 169 transitions. Word has length 13 [2023-11-26 11:57:16,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:57:16,616 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 169 transitions. [2023-11-26 11:57:16,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-26 11:57:16,617 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 169 transitions. [2023-11-26 11:57:16,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-26 11:57:16,618 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:57:16,618 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:57:16,630 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-26 11:57:16,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-26 11:57:16,831 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-11-26 11:57:16,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:57:16,831 INFO L85 PathProgramCache]: Analyzing trace with hash 951115354, now seen corresponding path program 1 times [2023-11-26 11:57:16,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:57:16,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133376792] [2023-11-26 11:57:16,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:16,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:57:16,867 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:57:16,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [847558278] [2023-11-26 11:57:16,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:16,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:16,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:57:16,878 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:57:16,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 11:57:16,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:57:16,929 INFO L262 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 11:57:16,933 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:57:17,024 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 11:57:17,025 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:57:17,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:57:17,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133376792] [2023-11-26 11:57:17,025 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:57:17,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [847558278] [2023-11-26 11:57:17,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [847558278] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:57:17,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:57:17,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 11:57:17,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546624075] [2023-11-26 11:57:17,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:57:17,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:57:17,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:57:17,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:57:17,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:57:17,029 INFO L87 Difference]: Start difference. First operand 159 states and 169 transitions. Second operand has 6 states, 4 states have (on average 2.5) internal successors, (10), 6 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-26 11:57:17,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:57:17,278 INFO L93 Difference]: Finished difference Result 159 states and 169 transitions. [2023-11-26 11:57:17,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:57:17,279 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 2.5) internal successors, (10), 6 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 14 [2023-11-26 11:57:17,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:57:17,281 INFO L225 Difference]: With dead ends: 159 [2023-11-26 11:57:17,281 INFO L226 Difference]: Without dead ends: 158 [2023-11-26 11:57:17,281 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 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 11:57:17,283 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 143 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 11:57:17,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 262 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 11:57:17,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2023-11-26 11:57:17,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2023-11-26 11:57:17,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 83 states have (on average 1.8072289156626506) internal successors, (150), 147 states have internal predecessors, (150), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-26 11:57:17,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 168 transitions. [2023-11-26 11:57:17,307 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 168 transitions. Word has length 14 [2023-11-26 11:57:17,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:57:17,307 INFO L495 AbstractCegarLoop]: Abstraction has 158 states and 168 transitions. [2023-11-26 11:57:17,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 2.5) internal successors, (10), 6 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-26 11:57:17,308 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 168 transitions. [2023-11-26 11:57:17,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-26 11:57:17,309 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:57:17,309 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:57:17,317 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-26 11:57:17,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:17,515 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-11-26 11:57:17,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:57:17,515 INFO L85 PathProgramCache]: Analyzing trace with hash 1564000962, now seen corresponding path program 1 times [2023-11-26 11:57:17,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:57:17,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020289673] [2023-11-26 11:57:17,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:17,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:57:17,530 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:57:17,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [775357459] [2023-11-26 11:57:17,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:17,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:17,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:57:17,538 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:57:17,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-26 11:57:17,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:57:17,594 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 11:57:17,596 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:57:17,669 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 11:57:17,669 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:57:17,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:57:17,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020289673] [2023-11-26 11:57:17,669 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:57:17,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [775357459] [2023-11-26 11:57:17,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [775357459] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:57:17,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:57:17,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:57:17,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613436839] [2023-11-26 11:57:17,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:57:17,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:57:17,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:57:17,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:57:17,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:57:17,672 INFO L87 Difference]: Start difference. First operand 158 states and 168 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 11:57:17,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:57:17,709 INFO L93 Difference]: Finished difference Result 199 states and 210 transitions. [2023-11-26 11:57:17,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:57:17,710 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 28 [2023-11-26 11:57:17,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:57:17,712 INFO L225 Difference]: With dead ends: 199 [2023-11-26 11:57:17,712 INFO L226 Difference]: Without dead ends: 198 [2023-11-26 11:57:17,712 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:57:17,713 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 42 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:57:17,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 466 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:57:17,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2023-11-26 11:57:17,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 174. [2023-11-26 11:57:17,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 97 states have (on average 1.7835051546391754) internal successors, (173), 161 states have internal predecessors, (173), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-26 11:57:17,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 193 transitions. [2023-11-26 11:57:17,729 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 193 transitions. Word has length 28 [2023-11-26 11:57:17,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:57:17,730 INFO L495 AbstractCegarLoop]: Abstraction has 174 states and 193 transitions. [2023-11-26 11:57:17,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 11:57:17,730 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 193 transitions. [2023-11-26 11:57:17,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-26 11:57:17,731 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:57:17,731 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 11:57:17,741 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-26 11:57:17,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:17,937 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-11-26 11:57:17,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:57:17,937 INFO L85 PathProgramCache]: Analyzing trace with hash 1239389620, now seen corresponding path program 1 times [2023-11-26 11:57:17,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:57:17,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63468451] [2023-11-26 11:57:17,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:17,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:57:17,949 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:57:17,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [222510278] [2023-11-26 11:57:17,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:17,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:17,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:57:17,951 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:57:17,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-26 11:57:18,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:57:18,006 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 11:57:18,008 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:57:18,072 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 11:57:18,072 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:57:18,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:57:18,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63468451] [2023-11-26 11:57:18,073 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:57:18,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [222510278] [2023-11-26 11:57:18,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [222510278] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:57:18,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:57:18,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:57:18,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654099522] [2023-11-26 11:57:18,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:57:18,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:57:18,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:57:18,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:57:18,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:57:18,076 INFO L87 Difference]: Start difference. First operand 174 states and 193 transitions. Second operand has 4 states, 3 states have (on average 4.0) 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 11:57:18,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:57:18,112 INFO L93 Difference]: Finished difference Result 204 states and 221 transitions. [2023-11-26 11:57:18,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:57:18,113 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) 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 11:57:18,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:57:18,115 INFO L225 Difference]: With dead ends: 204 [2023-11-26 11:57:18,116 INFO L226 Difference]: Without dead ends: 174 [2023-11-26 11:57:18,116 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:57:18,117 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 3 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:57:18,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 469 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:57:18,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2023-11-26 11:57:18,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2023-11-26 11:57:18,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 97 states have (on average 1.7628865979381443) internal successors, (171), 161 states have internal predecessors, (171), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-26 11:57:18,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 191 transitions. [2023-11-26 11:57:18,129 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 191 transitions. Word has length 29 [2023-11-26 11:57:18,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:57:18,130 INFO L495 AbstractCegarLoop]: Abstraction has 174 states and 191 transitions. [2023-11-26 11:57:18,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) 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 11:57:18,130 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 191 transitions. [2023-11-26 11:57:18,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-11-26 11:57:18,131 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:57:18,132 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] [2023-11-26 11:57:18,146 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-26 11:57:18,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:18,338 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr56ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-11-26 11:57:18,338 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:57:18,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1177615479, now seen corresponding path program 1 times [2023-11-26 11:57:18,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:57:18,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804860621] [2023-11-26 11:57:18,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:18,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:57:18,351 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:57:18,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [575533797] [2023-11-26 11:57:18,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:18,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:18,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:57:18,352 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:57:18,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-26 11:57:18,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:57:18,407 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-26 11:57:18,409 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:57:18,464 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-26 11:57:18,465 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:57:18,555 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-26 11:57:18,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:57:18,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804860621] [2023-11-26 11:57:18,556 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:57:18,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [575533797] [2023-11-26 11:57:18,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [575533797] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:57:18,556 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:57:18,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2023-11-26 11:57:18,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94370757] [2023-11-26 11:57:18,557 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 11:57:18,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 11:57:18,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:57:18,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 11:57:18,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:57:18,560 INFO L87 Difference]: Start difference. First operand 174 states and 191 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-26 11:57:18,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:57:18,894 INFO L93 Difference]: Finished difference Result 283 states and 300 transitions. [2023-11-26 11:57:18,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:57:18,895 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 32 [2023-11-26 11:57:18,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:57:18,897 INFO L225 Difference]: With dead ends: 283 [2023-11-26 11:57:18,897 INFO L226 Difference]: Without dead ends: 253 [2023-11-26 11:57:18,898 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 55 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-26 11:57:18,899 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 328 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 445 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 11:57:18,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [333 Valid, 445 Invalid, 408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 396 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 11:57:18,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2023-11-26 11:57:18,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 212. [2023-11-26 11:57:18,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 133 states have (on average 1.8270676691729324) internal successors, (243), 196 states have internal predecessors, (243), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-26 11:57:18,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 269 transitions. [2023-11-26 11:57:18,913 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 269 transitions. Word has length 32 [2023-11-26 11:57:18,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:57:18,914 INFO L495 AbstractCegarLoop]: Abstraction has 212 states and 269 transitions. [2023-11-26 11:57:18,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-26 11:57:18,914 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 269 transitions. [2023-11-26 11:57:18,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-26 11:57:18,915 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:57:18,915 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] [2023-11-26 11:57:18,923 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-26 11:57:19,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:19,122 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-11-26 11:57:19,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:57:19,123 INFO L85 PathProgramCache]: Analyzing trace with hash -2146343301, now seen corresponding path program 1 times [2023-11-26 11:57:19,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:57:19,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814268966] [2023-11-26 11:57:19,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:19,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:57:19,139 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:57:19,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1206550709] [2023-11-26 11:57:19,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:19,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:19,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:57:19,143 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:57:19,165 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-26 11:57:19,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:57:19,200 INFO L262 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 11:57:19,202 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:57:19,228 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-26 11:57:19,229 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:57:19,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:57:19,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814268966] [2023-11-26 11:57:19,229 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:57:19,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1206550709] [2023-11-26 11:57:19,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1206550709] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:57:19,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:57:19,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:57:19,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135351110] [2023-11-26 11:57:19,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:57:19,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:57:19,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:57:19,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:57:19,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:57:19,235 INFO L87 Difference]: Start difference. First operand 212 states and 269 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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 11:57:19,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:57:19,299 INFO L93 Difference]: Finished difference Result 212 states and 269 transitions. [2023-11-26 11:57:19,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:57:19,299 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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 33 [2023-11-26 11:57:19,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:57:19,302 INFO L225 Difference]: With dead ends: 212 [2023-11-26 11:57:19,302 INFO L226 Difference]: Without dead ends: 210 [2023-11-26 11:57:19,303 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:57:19,304 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 166 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:57:19,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 459 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:57:19,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2023-11-26 11:57:19,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 210. [2023-11-26 11:57:19,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 133 states have (on average 1.8045112781954886) internal successors, (240), 194 states have internal predecessors, (240), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-26 11:57:19,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 266 transitions. [2023-11-26 11:57:19,318 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 266 transitions. Word has length 33 [2023-11-26 11:57:19,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:57:19,319 INFO L495 AbstractCegarLoop]: Abstraction has 210 states and 266 transitions. [2023-11-26 11:57:19,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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 11:57:19,319 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 266 transitions. [2023-11-26 11:57:19,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-26 11:57:19,320 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:57:19,320 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:57:19,334 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-26 11:57:19,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-26 11:57:19,527 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-11-26 11:57:19,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:57:19,527 INFO L85 PathProgramCache]: Analyzing trace with hash -2112132818, now seen corresponding path program 1 times [2023-11-26 11:57:19,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:57:19,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089802993] [2023-11-26 11:57:19,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:19,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:57:19,558 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:57:19,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [820546523] [2023-11-26 11:57:19,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:19,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:19,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:57:19,562 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:57:19,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-26 11:57:19,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:57:19,630 INFO L262 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 11:57:19,632 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:57:19,657 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 11:57:19,657 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:57:19,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:57:19,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089802993] [2023-11-26 11:57:19,658 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:57:19,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [820546523] [2023-11-26 11:57:19,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [820546523] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:57:19,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:57:19,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:57:19,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141397086] [2023-11-26 11:57:19,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:57:19,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:57:19,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:57:19,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:57:19,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:57:19,661 INFO L87 Difference]: Start difference. First operand 210 states and 266 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 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 11:57:19,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:57:19,761 INFO L93 Difference]: Finished difference Result 248 states and 306 transitions. [2023-11-26 11:57:19,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 11:57:19,761 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 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 34 [2023-11-26 11:57:19,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:57:19,763 INFO L225 Difference]: With dead ends: 248 [2023-11-26 11:57:19,763 INFO L226 Difference]: Without dead ends: 247 [2023-11-26 11:57:19,764 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:57:19,765 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 53 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 636 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:57:19,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 636 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:57:19,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2023-11-26 11:57:19,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 227. [2023-11-26 11:57:19,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 148 states have (on average 1.7635135135135136) internal successors, (261), 210 states have internal predecessors, (261), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-26 11:57:19,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 289 transitions. [2023-11-26 11:57:19,781 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 289 transitions. Word has length 34 [2023-11-26 11:57:19,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:57:19,782 INFO L495 AbstractCegarLoop]: Abstraction has 227 states and 289 transitions. [2023-11-26 11:57:19,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 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 11:57:19,783 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 289 transitions. [2023-11-26 11:57:19,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-26 11:57:19,783 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:57:19,784 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 11:57:19,795 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-26 11:57:19,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-26 11:57:19,990 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-11-26 11:57:19,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:57:19,990 INFO L85 PathProgramCache]: Analyzing trace with hash 1759895408, now seen corresponding path program 1 times [2023-11-26 11:57:19,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:57:19,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111443066] [2023-11-26 11:57:19,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:19,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:57:20,000 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:57:20,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1062559195] [2023-11-26 11:57:20,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:20,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:20,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:57:20,004 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:57:20,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-26 11:57:20,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:57:20,058 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-26 11:57:20,060 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:57:20,145 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-26 11:57:20,145 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:57:20,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:57:20,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111443066] [2023-11-26 11:57:20,333 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:57:20,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062559195] [2023-11-26 11:57:20,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1062559195] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:57:20,334 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:57:20,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2023-11-26 11:57:20,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888276808] [2023-11-26 11:57:20,337 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-26 11:57:20,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 11:57:20,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:57:20,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 11:57:20,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-26 11:57:20,340 INFO L87 Difference]: Start difference. First operand 227 states and 289 transitions. Second operand has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-26 11:57:20,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:57:20,797 INFO L93 Difference]: Finished difference Result 268 states and 290 transitions. [2023-11-26 11:57:20,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 11:57:20,798 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 36 [2023-11-26 11:57:20,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:57:20,800 INFO L225 Difference]: With dead ends: 268 [2023-11-26 11:57:20,800 INFO L226 Difference]: Without dead ends: 266 [2023-11-26 11:57:20,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2023-11-26 11:57:20,802 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 322 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 413 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 327 SdHoareTripleChecker+Valid, 414 SdHoareTripleChecker+Invalid, 429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-26 11:57:20,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [327 Valid, 414 Invalid, 429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 413 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-26 11:57:20,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2023-11-26 11:57:20,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 227. [2023-11-26 11:57:20,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 148 states have (on average 1.75) internal successors, (259), 210 states have internal predecessors, (259), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-26 11:57:20,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 287 transitions. [2023-11-26 11:57:20,819 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 287 transitions. Word has length 36 [2023-11-26 11:57:20,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:57:20,821 INFO L495 AbstractCegarLoop]: Abstraction has 227 states and 287 transitions. [2023-11-26 11:57:20,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-26 11:57:20,822 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 287 transitions. [2023-11-26 11:57:20,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-11-26 11:57:20,830 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:57:20,830 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 11:57:20,842 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-26 11:57:21,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:21,036 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-11-26 11:57:21,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:57:21,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1277817118, now seen corresponding path program 1 times [2023-11-26 11:57:21,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:57:21,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823689133] [2023-11-26 11:57:21,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:21,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:57:21,047 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:57:21,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [698067656] [2023-11-26 11:57:21,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:21,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:21,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:57:21,049 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:57:21,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-26 11:57:21,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:57:21,109 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-26 11:57:21,111 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:57:21,213 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-26 11:57:21,213 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:57:21,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:57:21,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823689133] [2023-11-26 11:57:21,343 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:57:21,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [698067656] [2023-11-26 11:57:21,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [698067656] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:57:21,343 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:57:21,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2023-11-26 11:57:21,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488706839] [2023-11-26 11:57:21,344 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-26 11:57:21,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 11:57:21,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:57:21,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 11:57:21,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-26 11:57:21,345 INFO L87 Difference]: Start difference. First operand 227 states and 287 transitions. Second operand has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-26 11:57:21,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:57:21,823 INFO L93 Difference]: Finished difference Result 349 states and 378 transitions. [2023-11-26 11:57:21,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 11:57:21,824 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 37 [2023-11-26 11:57:21,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:57:21,827 INFO L225 Difference]: With dead ends: 349 [2023-11-26 11:57:21,827 INFO L226 Difference]: Without dead ends: 347 [2023-11-26 11:57:21,827 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2023-11-26 11:57:21,828 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 401 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 464 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 406 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-26 11:57:21,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [406 Valid, 456 Invalid, 483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 464 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-26 11:57:21,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2023-11-26 11:57:21,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 273. [2023-11-26 11:57:21,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 190 states have (on average 1.7789473684210526) internal successors, (338), 252 states have internal predecessors, (338), 18 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2023-11-26 11:57:21,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 374 transitions. [2023-11-26 11:57:21,866 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 374 transitions. Word has length 37 [2023-11-26 11:57:21,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:57:21,866 INFO L495 AbstractCegarLoop]: Abstraction has 273 states and 374 transitions. [2023-11-26 11:57:21,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-26 11:57:21,866 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 374 transitions. [2023-11-26 11:57:21,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-11-26 11:57:21,867 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:57:21,868 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 11:57:21,877 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-26 11:57:22,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:22,073 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr48ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-11-26 11:57:22,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:57:22,074 INFO L85 PathProgramCache]: Analyzing trace with hash -1277816128, now seen corresponding path program 1 times [2023-11-26 11:57:22,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:57:22,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669191027] [2023-11-26 11:57:22,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:22,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:57:22,084 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:57:22,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1010587762] [2023-11-26 11:57:22,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:22,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:22,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:57:22,086 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:57:22,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-26 11:57:22,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:57:22,135 INFO L262 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 11:57:22,137 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:57:22,218 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 11:57:22,218 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:57:22,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:57:22,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669191027] [2023-11-26 11:57:22,218 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:57:22,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1010587762] [2023-11-26 11:57:22,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1010587762] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:57:22,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:57:22,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 11:57:22,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740774140] [2023-11-26 11:57:22,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:57:22,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:57:22,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:57:22,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:57:22,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:57:22,220 INFO L87 Difference]: Start difference. First operand 273 states and 374 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 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 11:57:22,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:57:22,295 INFO L93 Difference]: Finished difference Result 429 states and 543 transitions. [2023-11-26 11:57:22,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 11:57:22,295 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 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 37 [2023-11-26 11:57:22,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:57:22,298 INFO L225 Difference]: With dead ends: 429 [2023-11-26 11:57:22,298 INFO L226 Difference]: Without dead ends: 273 [2023-11-26 11:57:22,299 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-26 11:57:22,299 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 5 mSDsluCounter, 596 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 753 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:57:22,300 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 753 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:57:22,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2023-11-26 11:57:22,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 273. [2023-11-26 11:57:22,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 190 states have (on average 1.7736842105263158) internal successors, (337), 252 states have internal predecessors, (337), 18 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2023-11-26 11:57:22,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 373 transitions. [2023-11-26 11:57:22,316 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 373 transitions. Word has length 37 [2023-11-26 11:57:22,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:57:22,316 INFO L495 AbstractCegarLoop]: Abstraction has 273 states and 373 transitions. [2023-11-26 11:57:22,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 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 11:57:22,316 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 373 transitions. [2023-11-26 11:57:22,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-11-26 11:57:22,317 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:57:22,317 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 11:57:22,333 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-26 11:57:22,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:22,523 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-11-26 11:57:22,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:57:22,524 INFO L85 PathProgramCache]: Analyzing trace with hash -957624910, now seen corresponding path program 1 times [2023-11-26 11:57:22,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:57:22,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863106150] [2023-11-26 11:57:22,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:22,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:57:22,534 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:57:22,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1901597473] [2023-11-26 11:57:22,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:22,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:22,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:57:22,535 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:57:22,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-26 11:57:22,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:57:22,597 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-26 11:57:22,599 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:57:22,675 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 11:57:22,675 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:57:22,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:57:22,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863106150] [2023-11-26 11:57:22,891 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:57:22,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1901597473] [2023-11-26 11:57:22,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1901597473] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:57:22,891 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:57:22,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2023-11-26 11:57:22,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187847087] [2023-11-26 11:57:22,892 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-26 11:57:22,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 11:57:22,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:57:22,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 11:57:22,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-11-26 11:57:22,893 INFO L87 Difference]: Start difference. First operand 273 states and 373 transitions. Second operand has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-26 11:57:23,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:57:23,856 INFO L93 Difference]: Finished difference Result 420 states and 449 transitions. [2023-11-26 11:57:23,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-26 11:57:23,856 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 38 [2023-11-26 11:57:23,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:57:23,859 INFO L225 Difference]: With dead ends: 420 [2023-11-26 11:57:23,859 INFO L226 Difference]: Without dead ends: 419 [2023-11-26 11:57:23,860 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2023-11-26 11:57:23,860 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 617 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 566 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 622 SdHoareTripleChecker+Valid, 626 SdHoareTripleChecker+Invalid, 591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-26 11:57:23,861 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [622 Valid, 626 Invalid, 591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 566 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-26 11:57:23,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2023-11-26 11:57:23,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 273. [2023-11-26 11:57:23,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 190 states have (on average 1.768421052631579) internal successors, (336), 252 states have internal predecessors, (336), 18 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2023-11-26 11:57:23,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 372 transitions. [2023-11-26 11:57:23,880 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 372 transitions. Word has length 38 [2023-11-26 11:57:23,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:57:23,880 INFO L495 AbstractCegarLoop]: Abstraction has 273 states and 372 transitions. [2023-11-26 11:57:23,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-26 11:57:23,881 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 372 transitions. [2023-11-26 11:57:23,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-26 11:57:23,882 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:57:23,882 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 11:57:23,892 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-26 11:57:24,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:24,087 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-11-26 11:57:24,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:57:24,088 INFO L85 PathProgramCache]: Analyzing trace with hash 378398948, now seen corresponding path program 1 times [2023-11-26 11:57:24,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:57:24,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198301427] [2023-11-26 11:57:24,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:24,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:57:24,108 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:57:24,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [31886841] [2023-11-26 11:57:24,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:24,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:24,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:57:24,114 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:57:24,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-26 11:57:24,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:57:24,178 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-26 11:57:24,180 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:57:24,341 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-26 11:57:24,341 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:57:24,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:57:24,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198301427] [2023-11-26 11:57:24,482 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:57:24,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [31886841] [2023-11-26 11:57:24,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [31886841] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:57:24,482 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:57:24,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2023-11-26 11:57:24,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874368043] [2023-11-26 11:57:24,483 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-26 11:57:24,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 11:57:24,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:57:24,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 11:57:24,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-11-26 11:57:24,484 INFO L87 Difference]: Start difference. First operand 273 states and 372 transitions. Second operand has 8 states, 6 states have (on average 4.166666666666667) internal successors, (25), 7 states have internal predecessors, (25), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-26 11:57:26,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:57:26,344 INFO L93 Difference]: Finished difference Result 347 states and 374 transitions. [2023-11-26 11:57:26,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 11:57:26,345 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 4.166666666666667) internal successors, (25), 7 states have internal predecessors, (25), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 39 [2023-11-26 11:57:26,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:57:26,347 INFO L225 Difference]: With dead ends: 347 [2023-11-26 11:57:26,347 INFO L226 Difference]: Without dead ends: 345 [2023-11-26 11:57:26,348 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2023-11-26 11:57:26,349 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 533 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 556 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 538 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 556 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-26 11:57:26,349 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [538 Valid, 315 Invalid, 581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 556 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-26 11:57:26,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2023-11-26 11:57:26,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 273. [2023-11-26 11:57:26,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 190 states have (on average 1.7578947368421052) internal successors, (334), 252 states have internal predecessors, (334), 18 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2023-11-26 11:57:26,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 370 transitions. [2023-11-26 11:57:26,367 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 370 transitions. Word has length 39 [2023-11-26 11:57:26,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:57:26,367 INFO L495 AbstractCegarLoop]: Abstraction has 273 states and 370 transitions. [2023-11-26 11:57:26,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 4.166666666666667) internal successors, (25), 7 states have internal predecessors, (25), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-26 11:57:26,367 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 370 transitions. [2023-11-26 11:57:26,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-26 11:57:26,368 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:57:26,368 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, 1, 1, 1, 1] [2023-11-26 11:57:26,380 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-26 11:57:26,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-26 11:57:26,580 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-11-26 11:57:26,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:57:26,580 INFO L85 PathProgramCache]: Analyzing trace with hash -1317127471, now seen corresponding path program 1 times [2023-11-26 11:57:26,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:57:26,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854856314] [2023-11-26 11:57:26,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:26,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:57:26,590 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:57:26,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1628071056] [2023-11-26 11:57:26,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:26,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:26,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:57:26,595 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:57:26,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-26 11:57:26,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:57:26,656 INFO L262 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 11:57:26,658 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:57:26,841 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-26 11:57:26,841 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:57:27,045 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-26 11:57:27,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:57:27,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854856314] [2023-11-26 11:57:27,046 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:57:27,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1628071056] [2023-11-26 11:57:27,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1628071056] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:57:27,046 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:57:27,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2023-11-26 11:57:27,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380232720] [2023-11-26 11:57:27,047 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 11:57:27,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-26 11:57:27,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:57:27,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-26 11:57:27,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-11-26 11:57:27,050 INFO L87 Difference]: Start difference. First operand 273 states and 370 transitions. Second operand has 10 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 4 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (10), 6 states have call predecessors, (10), 4 states have call successors, (10) [2023-11-26 11:57:29,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:57:29,677 INFO L93 Difference]: Finished difference Result 339 states and 402 transitions. [2023-11-26 11:57:29,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 11:57:29,678 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 4 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (10), 6 states have call predecessors, (10), 4 states have call successors, (10) Word has length 45 [2023-11-26 11:57:29,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:57:29,680 INFO L225 Difference]: With dead ends: 339 [2023-11-26 11:57:29,680 INFO L226 Difference]: Without dead ends: 338 [2023-11-26 11:57:29,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2023-11-26 11:57:29,682 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 482 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 487 SdHoareTripleChecker+Valid, 363 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-11-26 11:57:29,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [487 Valid, 363 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-11-26 11:57:29,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2023-11-26 11:57:29,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 280. [2023-11-26 11:57:29,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 196 states have (on average 1.75) internal successors, (343), 258 states have internal predecessors, (343), 19 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-26 11:57:29,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 381 transitions. [2023-11-26 11:57:29,699 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 381 transitions. Word has length 45 [2023-11-26 11:57:29,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:57:29,700 INFO L495 AbstractCegarLoop]: Abstraction has 280 states and 381 transitions. [2023-11-26 11:57:29,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 4 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (10), 6 states have call predecessors, (10), 4 states have call successors, (10) [2023-11-26 11:57:29,700 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 381 transitions. [2023-11-26 11:57:29,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-11-26 11:57:29,701 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:57:29,701 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, 1, 1, 1, 1, 1] [2023-11-26 11:57:29,713 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-26 11:57:29,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:29,909 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-11-26 11:57:29,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:57:29,909 INFO L85 PathProgramCache]: Analyzing trace with hash 2118721450, now seen corresponding path program 1 times [2023-11-26 11:57:29,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:57:29,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553299108] [2023-11-26 11:57:29,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:29,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:57:29,923 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:57:29,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [64732488] [2023-11-26 11:57:29,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:29,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:29,924 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:57:29,925 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:57:29,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-26 11:57:29,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:57:29,991 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 11:57:29,993 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:57:30,170 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-26 11:57:30,170 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:57:30,417 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-26 11:57:30,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:57:30,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553299108] [2023-11-26 11:57:30,417 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:57:30,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [64732488] [2023-11-26 11:57:30,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [64732488] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:57:30,418 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:57:30,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2023-11-26 11:57:30,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765655153] [2023-11-26 11:57:30,418 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 11:57:30,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-26 11:57:30,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:57:30,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-26 11:57:30,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-11-26 11:57:30,420 INFO L87 Difference]: Start difference. First operand 280 states and 381 transitions. Second operand has 10 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 4 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (10), 6 states have call predecessors, (10), 4 states have call successors, (10) [2023-11-26 11:57:33,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:57:33,025 INFO L93 Difference]: Finished difference Result 340 states and 401 transitions. [2023-11-26 11:57:33,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 11:57:33,025 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 4 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (10), 6 states have call predecessors, (10), 4 states have call successors, (10) Word has length 46 [2023-11-26 11:57:33,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:57:33,028 INFO L225 Difference]: With dead ends: 340 [2023-11-26 11:57:33,028 INFO L226 Difference]: Without dead ends: 339 [2023-11-26 11:57:33,028 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2023-11-26 11:57:33,029 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 656 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 661 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-11-26 11:57:33,029 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [661 Valid, 453 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-11-26 11:57:33,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2023-11-26 11:57:33,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 281. [2023-11-26 11:57:33,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 197 states have (on average 1.736040609137056) internal successors, (342), 259 states have internal predecessors, (342), 19 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-26 11:57:33,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 380 transitions. [2023-11-26 11:57:33,059 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 380 transitions. Word has length 46 [2023-11-26 11:57:33,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:57:33,059 INFO L495 AbstractCegarLoop]: Abstraction has 281 states and 380 transitions. [2023-11-26 11:57:33,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 4 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (10), 6 states have call predecessors, (10), 4 states have call successors, (10) [2023-11-26 11:57:33,060 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 380 transitions. [2023-11-26 11:57:33,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-11-26 11:57:33,060 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:57:33,061 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, 1, 1, 1, 1, 1, 1] [2023-11-26 11:57:33,066 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-26 11:57:33,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:33,267 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-11-26 11:57:33,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:57:33,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1255855603, now seen corresponding path program 1 times [2023-11-26 11:57:33,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:57:33,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732302465] [2023-11-26 11:57:33,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:33,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:57:33,277 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:57:33,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1563549432] [2023-11-26 11:57:33,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:33,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:33,278 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:57:33,279 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:57:33,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-26 11:57:33,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:57:33,342 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 11:57:33,343 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:57:33,472 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 11:57:33,472 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:57:33,661 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 11:57:33,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:57:33,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732302465] [2023-11-26 11:57:33,661 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:57:33,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1563549432] [2023-11-26 11:57:33,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1563549432] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:57:33,662 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:57:33,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-26 11:57:33,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923394516] [2023-11-26 11:57:33,662 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 11:57:33,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-26 11:57:33,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:57:33,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-26 11:57:33,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-26 11:57:33,663 INFO L87 Difference]: Start difference. First operand 281 states and 380 transitions. Second operand has 9 states, 8 states have (on average 6.75) internal successors, (54), 7 states have internal predecessors, (54), 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 11:57:34,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:57:34,950 INFO L93 Difference]: Finished difference Result 324 states and 384 transitions. [2023-11-26 11:57:34,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 11:57:34,951 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.75) internal successors, (54), 7 states have internal predecessors, (54), 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 47 [2023-11-26 11:57:34,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:57:34,953 INFO L225 Difference]: With dead ends: 324 [2023-11-26 11:57:34,954 INFO L226 Difference]: Without dead ends: 323 [2023-11-26 11:57:34,954 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 85 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 11:57:34,955 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 431 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 436 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-26 11:57:34,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [436 Valid, 492 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-26 11:57:34,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2023-11-26 11:57:34,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 282. [2023-11-26 11:57:34,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 198 states have (on average 1.7222222222222223) internal successors, (341), 260 states have internal predecessors, (341), 19 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-26 11:57:34,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 379 transitions. [2023-11-26 11:57:34,983 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 379 transitions. Word has length 47 [2023-11-26 11:57:34,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:57:34,984 INFO L495 AbstractCegarLoop]: Abstraction has 282 states and 379 transitions. [2023-11-26 11:57:34,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.75) internal successors, (54), 7 states have internal predecessors, (54), 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 11:57:34,984 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 379 transitions. [2023-11-26 11:57:34,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-11-26 11:57:34,987 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:57:34,987 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, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:57:35,005 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-26 11:57:35,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-26 11:57:35,193 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-11-26 11:57:35,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:57:35,193 INFO L85 PathProgramCache]: Analyzing trace with hash 276818124, now seen corresponding path program 1 times [2023-11-26 11:57:35,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:57:35,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450112553] [2023-11-26 11:57:35,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:35,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:57:35,202 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:57:35,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1285193565] [2023-11-26 11:57:35,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:35,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:35,203 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:57:35,211 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:57:35,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-26 11:57:35,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:57:35,276 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 11:57:35,278 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:57:35,375 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 11:57:35,375 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:57:35,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:57:35,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450112553] [2023-11-26 11:57:35,376 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:57:35,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1285193565] [2023-11-26 11:57:35,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1285193565] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:57:35,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:57:35,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:57:35,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407156038] [2023-11-26 11:57:35,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:57:35,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:57:35,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:57:35,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:57:35,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:57:35,379 INFO L87 Difference]: Start difference. First operand 282 states and 379 transitions. Second operand has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-26 11:57:35,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:57:35,564 INFO L93 Difference]: Finished difference Result 318 states and 380 transitions. [2023-11-26 11:57:35,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:57:35,565 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 48 [2023-11-26 11:57:35,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:57:35,567 INFO L225 Difference]: With dead ends: 318 [2023-11-26 11:57:35,568 INFO L226 Difference]: Without dead ends: 317 [2023-11-26 11:57:35,568 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 45 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 11:57:35,569 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 207 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 11:57:35,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 226 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 11:57:35,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2023-11-26 11:57:35,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 282. [2023-11-26 11:57:35,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 198 states have (on average 1.7121212121212122) internal successors, (339), 260 states have internal predecessors, (339), 19 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-26 11:57:35,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 377 transitions. [2023-11-26 11:57:35,592 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 377 transitions. Word has length 48 [2023-11-26 11:57:35,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:57:35,593 INFO L495 AbstractCegarLoop]: Abstraction has 282 states and 377 transitions. [2023-11-26 11:57:35,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-26 11:57:35,593 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 377 transitions. [2023-11-26 11:57:35,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-11-26 11:57:35,594 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:57:35,594 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:57:35,607 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-26 11:57:35,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-26 11:57:35,807 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-11-26 11:57:35,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:57:35,807 INFO L85 PathProgramCache]: Analyzing trace with hash -8572651, now seen corresponding path program 1 times [2023-11-26 11:57:35,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:57:35,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85388097] [2023-11-26 11:57:35,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:35,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:57:35,832 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:57:35,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1753444651] [2023-11-26 11:57:35,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:35,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:35,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:57:35,841 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:57:35,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-26 11:57:35,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:57:35,900 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-26 11:57:35,901 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:57:36,118 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 11:57:36,118 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:57:36,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:57:36,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85388097] [2023-11-26 11:57:36,287 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:57:36,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1753444651] [2023-11-26 11:57:36,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1753444651] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:57:36,288 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:57:36,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2023-11-26 11:57:36,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658568336] [2023-11-26 11:57:36,288 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-26 11:57:36,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:57:36,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:57:36,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:57:36,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:57:36,290 INFO L87 Difference]: Start difference. First operand 282 states and 377 transitions. Second operand has 6 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 3 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-26 11:57:36,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:57:36,652 INFO L93 Difference]: Finished difference Result 317 states and 378 transitions. [2023-11-26 11:57:36,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:57:36,653 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 3 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) Word has length 49 [2023-11-26 11:57:36,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:57:36,655 INFO L225 Difference]: With dead ends: 317 [2023-11-26 11:57:36,655 INFO L226 Difference]: Without dead ends: 316 [2023-11-26 11:57:36,656 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-26 11:57:36,656 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 207 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 11:57:36,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 406 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 11:57:36,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2023-11-26 11:57:36,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 282. [2023-11-26 11:57:36,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 198 states have (on average 1.702020202020202) internal successors, (337), 260 states have internal predecessors, (337), 19 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-26 11:57:36,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 375 transitions. [2023-11-26 11:57:36,676 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 375 transitions. Word has length 49 [2023-11-26 11:57:36,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:57:36,676 INFO L495 AbstractCegarLoop]: Abstraction has 282 states and 375 transitions. [2023-11-26 11:57:36,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 3 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-26 11:57:36,677 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 375 transitions. [2023-11-26 11:57:36,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-26 11:57:36,677 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:57:36,678 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:57:36,688 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-11-26 11:57:36,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-26 11:57:36,884 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-11-26 11:57:36,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:57:36,884 INFO L85 PathProgramCache]: Analyzing trace with hash -265752082, now seen corresponding path program 1 times [2023-11-26 11:57:36,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:57:36,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073627242] [2023-11-26 11:57:36,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:36,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:57:36,903 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:57:36,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1869918587] [2023-11-26 11:57:36,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:36,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:36,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:57:36,906 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:57:36,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-26 11:57:36,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:57:36,974 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-26 11:57:36,976 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:57:37,201 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-26 11:57:37,202 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:57:37,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:57:37,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073627242] [2023-11-26 11:57:37,526 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:57:37,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1869918587] [2023-11-26 11:57:37,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1869918587] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:57:37,527 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:57:37,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2023-11-26 11:57:37,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73404097] [2023-11-26 11:57:37,527 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-26 11:57:37,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 11:57:37,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:57:37,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 11:57:37,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-11-26 11:57:37,529 INFO L87 Difference]: Start difference. First operand 282 states and 375 transitions. Second operand has 8 states, 6 states have (on average 5.666666666666667) internal successors, (34), 7 states have internal predecessors, (34), 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 11:57:39,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:57:39,519 INFO L93 Difference]: Finished difference Result 324 states and 384 transitions. [2023-11-26 11:57:39,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 11:57:39,520 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 5.666666666666667) internal successors, (34), 7 states have internal predecessors, (34), 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 50 [2023-11-26 11:57:39,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:57:39,522 INFO L225 Difference]: With dead ends: 324 [2023-11-26 11:57:39,522 INFO L226 Difference]: Without dead ends: 323 [2023-11-26 11:57:39,523 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 48 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 11:57:39,524 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 362 mSDsluCounter, 326 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:57:39,524 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [371 Valid, 428 Invalid, 329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-26 11:57:39,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2023-11-26 11:57:39,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 282. [2023-11-26 11:57:39,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 198 states have (on average 1.6919191919191918) internal successors, (335), 260 states have internal predecessors, (335), 19 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-26 11:57:39,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 373 transitions. [2023-11-26 11:57:39,553 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 373 transitions. Word has length 50 [2023-11-26 11:57:39,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:57:39,554 INFO L495 AbstractCegarLoop]: Abstraction has 282 states and 373 transitions. [2023-11-26 11:57:39,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 5.666666666666667) internal successors, (34), 7 states have internal predecessors, (34), 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 11:57:39,554 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 373 transitions. [2023-11-26 11:57:39,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-26 11:57:39,555 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:57:39,555 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, 1, 1, 1, 1] [2023-11-26 11:57:39,566 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-11-26 11:57:39,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:39,761 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-11-26 11:57:39,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:57:39,761 INFO L85 PathProgramCache]: Analyzing trace with hash -682195484, now seen corresponding path program 1 times [2023-11-26 11:57:39,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:57:39,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85274817] [2023-11-26 11:57:39,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:39,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:57:39,786 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:57:39,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [91527781] [2023-11-26 11:57:39,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:39,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:39,787 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:57:39,789 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:57:39,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-26 11:57:39,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:57:39,856 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 11:57:39,858 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:57:40,036 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-26 11:57:40,036 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:57:40,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:57:40,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85274817] [2023-11-26 11:57:40,199 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:57:40,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [91527781] [2023-11-26 11:57:40,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [91527781] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:57:40,199 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:57:40,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2023-11-26 11:57:40,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490793854] [2023-11-26 11:57:40,200 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-26 11:57:40,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 11:57:40,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:57:40,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 11:57:40,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-26 11:57:40,201 INFO L87 Difference]: Start difference. First operand 282 states and 373 transitions. Second operand has 7 states, 5 states have (on average 7.0) internal successors, (35), 6 states have internal predecessors, (35), 3 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-26 11:57:41,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:57:41,425 INFO L93 Difference]: Finished difference Result 321 states and 382 transitions. [2023-11-26 11:57:41,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 11:57:41,425 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 7.0) internal successors, (35), 6 states have internal predecessors, (35), 3 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) Word has length 56 [2023-11-26 11:57:41,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:57:41,428 INFO L225 Difference]: With dead ends: 321 [2023-11-26 11:57:41,428 INFO L226 Difference]: Without dead ends: 319 [2023-11-26 11:57:41,429 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-11-26 11:57:41,429 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 279 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-26 11:57:41,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [286 Valid, 357 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 313 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-26 11:57:41,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2023-11-26 11:57:41,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 282. [2023-11-26 11:57:41,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 198 states have (on average 1.6717171717171717) internal successors, (331), 260 states have internal predecessors, (331), 19 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-26 11:57:41,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 369 transitions. [2023-11-26 11:57:41,450 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 369 transitions. Word has length 56 [2023-11-26 11:57:41,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:57:41,450 INFO L495 AbstractCegarLoop]: Abstraction has 282 states and 369 transitions. [2023-11-26 11:57:41,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 7.0) internal successors, (35), 6 states have internal predecessors, (35), 3 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-26 11:57:41,451 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 369 transitions. [2023-11-26 11:57:41,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-26 11:57:41,452 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:57:41,452 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, 1, 1, 1, 1, 1] [2023-11-26 11:57:41,459 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-11-26 11:57:41,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:41,659 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-11-26 11:57:41,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:57:41,660 INFO L85 PathProgramCache]: Analyzing trace with hash 326776580, now seen corresponding path program 1 times [2023-11-26 11:57:41,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:57:41,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288632648] [2023-11-26 11:57:41,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:41,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:57:41,673 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:57:41,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2131794353] [2023-11-26 11:57:41,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:41,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:41,674 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:57:41,675 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:57:41,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-26 11:57:41,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:57:41,746 INFO L262 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 11:57:41,748 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:57:41,949 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-26 11:57:41,949 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:57:42,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:57:42,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288632648] [2023-11-26 11:57:42,207 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:57:42,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2131794353] [2023-11-26 11:57:42,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2131794353] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:57:42,207 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:57:42,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2023-11-26 11:57:42,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543922937] [2023-11-26 11:57:42,208 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-26 11:57:42,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 11:57:42,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:57:42,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 11:57:42,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-26 11:57:42,209 INFO L87 Difference]: Start difference. First operand 282 states and 369 transitions. Second operand has 7 states, 5 states have (on average 7.2) internal successors, (36), 6 states have internal predecessors, (36), 3 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-26 11:57:43,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:57:43,394 INFO L93 Difference]: Finished difference Result 321 states and 378 transitions. [2023-11-26 11:57:43,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 11:57:43,395 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 7.2) internal successors, (36), 6 states have internal predecessors, (36), 3 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) Word has length 57 [2023-11-26 11:57:43,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:57:43,397 INFO L225 Difference]: With dead ends: 321 [2023-11-26 11:57:43,397 INFO L226 Difference]: Without dead ends: 319 [2023-11-26 11:57:43,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-11-26 11:57:43,399 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 338 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 345 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-26 11:57:43,399 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [345 Valid, 351 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-26 11:57:43,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2023-11-26 11:57:43,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 282. [2023-11-26 11:57:43,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 198 states have (on average 1.6515151515151516) internal successors, (327), 260 states have internal predecessors, (327), 19 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-26 11:57:43,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 365 transitions. [2023-11-26 11:57:43,427 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 365 transitions. Word has length 57 [2023-11-26 11:57:43,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:57:43,427 INFO L495 AbstractCegarLoop]: Abstraction has 282 states and 365 transitions. [2023-11-26 11:57:43,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 7.2) internal successors, (36), 6 states have internal predecessors, (36), 3 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-26 11:57:43,428 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 365 transitions. [2023-11-26 11:57:43,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-26 11:57:43,434 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:57:43,434 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, 1, 1, 1, 1, 1, 1] [2023-11-26 11:57:43,441 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-11-26 11:57:43,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:43,641 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-11-26 11:57:43,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:57:43,641 INFO L85 PathProgramCache]: Analyzing trace with hash 1540139494, now seen corresponding path program 1 times [2023-11-26 11:57:43,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:57:43,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898918935] [2023-11-26 11:57:43,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:43,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:57:43,660 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:57:43,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [470176809] [2023-11-26 11:57:43,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:43,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:43,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:57:43,662 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:57:43,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-26 11:57:43,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:57:43,715 INFO L262 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 11:57:43,717 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:57:43,861 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 11:57:43,861 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:57:44,049 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 11:57:44,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:57:44,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898918935] [2023-11-26 11:57:44,049 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:57:44,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [470176809] [2023-11-26 11:57:44,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [470176809] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:57:44,049 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:57:44,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-26 11:57:44,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080825218] [2023-11-26 11:57:44,050 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 11:57:44,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-26 11:57:44,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:57:44,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-26 11:57:44,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-26 11:57:44,051 INFO L87 Difference]: Start difference. First operand 282 states and 365 transitions. Second operand has 9 states, 8 states have (on average 8.25) internal successors, (66), 7 states have internal predecessors, (66), 3 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (11), 5 states have call predecessors, (11), 3 states have call successors, (11) [2023-11-26 11:57:46,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:57:46,071 INFO L93 Difference]: Finished difference Result 359 states and 413 transitions. [2023-11-26 11:57:46,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 11:57:46,072 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.25) internal successors, (66), 7 states have internal predecessors, (66), 3 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (11), 5 states have call predecessors, (11), 3 states have call successors, (11) Word has length 58 [2023-11-26 11:57:46,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:57:46,075 INFO L225 Difference]: With dead ends: 359 [2023-11-26 11:57:46,075 INFO L226 Difference]: Without dead ends: 357 [2023-11-26 11:57:46,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 107 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 11:57:46,076 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 592 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 468 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 597 SdHoareTripleChecker+Valid, 491 SdHoareTripleChecker+Invalid, 488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:57:46,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [597 Valid, 491 Invalid, 488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 468 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-26 11:57:46,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2023-11-26 11:57:46,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 288. [2023-11-26 11:57:46,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 204 states have (on average 1.6323529411764706) internal successors, (333), 265 states have internal predecessors, (333), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-26 11:57:46,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 373 transitions. [2023-11-26 11:57:46,098 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 373 transitions. Word has length 58 [2023-11-26 11:57:46,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:57:46,099 INFO L495 AbstractCegarLoop]: Abstraction has 288 states and 373 transitions. [2023-11-26 11:57:46,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.25) internal successors, (66), 7 states have internal predecessors, (66), 3 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (11), 5 states have call predecessors, (11), 3 states have call successors, (11) [2023-11-26 11:57:46,099 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 373 transitions. [2023-11-26 11:57:46,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-11-26 11:57:46,100 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:57:46,100 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, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:57:46,106 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-11-26 11:57:46,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-11-26 11:57:46,306 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-11-26 11:57:46,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:57:46,306 INFO L85 PathProgramCache]: Analyzing trace with hash 499684166, now seen corresponding path program 1 times [2023-11-26 11:57:46,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:57:46,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527611172] [2023-11-26 11:57:46,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:46,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:57:46,321 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:57:46,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1025128843] [2023-11-26 11:57:46,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:46,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:46,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:57:46,323 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:57:46,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-26 11:57:46,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:57:46,374 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 11:57:46,376 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:57:46,533 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-26 11:57:46,533 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:57:46,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:57:46,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527611172] [2023-11-26 11:57:46,534 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:57:46,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1025128843] [2023-11-26 11:57:46,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1025128843] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:57:46,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:57:46,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:57:46,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597209172] [2023-11-26 11:57:46,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:57:46,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:57:46,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:57:46,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:57:46,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:57:46,537 INFO L87 Difference]: Start difference. First operand 288 states and 373 transitions. Second operand has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-26 11:57:47,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:57:47,085 INFO L93 Difference]: Finished difference Result 331 states and 390 transitions. [2023-11-26 11:57:47,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:57:47,086 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 59 [2023-11-26 11:57:47,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:57:47,089 INFO L225 Difference]: With dead ends: 331 [2023-11-26 11:57:47,089 INFO L226 Difference]: Without dead ends: 329 [2023-11-26 11:57:47,089 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 56 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 11:57:47,090 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 276 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-26 11:57:47,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [283 Valid, 167 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-26 11:57:47,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2023-11-26 11:57:47,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 288. [2023-11-26 11:57:47,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 204 states have (on average 1.6127450980392157) internal successors, (329), 265 states have internal predecessors, (329), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-26 11:57:47,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 369 transitions. [2023-11-26 11:57:47,112 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 369 transitions. Word has length 59 [2023-11-26 11:57:47,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:57:47,113 INFO L495 AbstractCegarLoop]: Abstraction has 288 states and 369 transitions. [2023-11-26 11:57:47,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-26 11:57:47,113 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 369 transitions. [2023-11-26 11:57:47,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-11-26 11:57:47,114 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:57:47,114 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:57:47,121 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-11-26 11:57:47,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-11-26 11:57:47,320 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-11-26 11:57:47,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:57:47,320 INFO L85 PathProgramCache]: Analyzing trace with hash -1689659928, now seen corresponding path program 1 times [2023-11-26 11:57:47,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:57:47,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983263192] [2023-11-26 11:57:47,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:47,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:57:47,328 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:57:47,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1872663863] [2023-11-26 11:57:47,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:47,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:47,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:57:47,330 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:57:47,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-11-26 11:57:47,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:57:47,396 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-26 11:57:47,397 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:57:47,611 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 11:57:47,611 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:57:47,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:57:47,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983263192] [2023-11-26 11:57:47,697 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:57:47,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1872663863] [2023-11-26 11:57:47,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1872663863] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:57:47,698 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:57:47,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2023-11-26 11:57:47,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774361216] [2023-11-26 11:57:47,698 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-26 11:57:47,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:57:47,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:57:47,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:57:47,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:57:47,700 INFO L87 Difference]: Start difference. First operand 288 states and 369 transitions. Second operand has 6 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 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 11:57:48,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:57:48,641 INFO L93 Difference]: Finished difference Result 321 states and 378 transitions. [2023-11-26 11:57:48,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:57:48,641 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 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 60 [2023-11-26 11:57:48,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:57:48,644 INFO L225 Difference]: With dead ends: 321 [2023-11-26 11:57:48,644 INFO L226 Difference]: Without dead ends: 316 [2023-11-26 11:57:48,644 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-26 11:57:48,645 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 194 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-26 11:57:48,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 299 Invalid, 376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 372 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-26 11:57:48,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2023-11-26 11:57:48,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 291. [2023-11-26 11:57:48,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 207 states have (on average 1.5748792270531402) internal successors, (326), 268 states have internal predecessors, (326), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-26 11:57:48,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 366 transitions. [2023-11-26 11:57:48,666 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 366 transitions. Word has length 60 [2023-11-26 11:57:48,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:57:48,666 INFO L495 AbstractCegarLoop]: Abstraction has 291 states and 366 transitions. [2023-11-26 11:57:48,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 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 11:57:48,666 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 366 transitions. [2023-11-26 11:57:48,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-26 11:57:48,667 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:57:48,667 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:57:48,673 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-11-26 11:57:48,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-11-26 11:57:48,873 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-11-26 11:57:48,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:57:48,874 INFO L85 PathProgramCache]: Analyzing trace with hash -839850104, now seen corresponding path program 1 times [2023-11-26 11:57:48,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:57:48,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406411767] [2023-11-26 11:57:48,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:48,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:57:48,883 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:57:48,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [248275320] [2023-11-26 11:57:48,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:48,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:48,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:57:48,885 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:57:48,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-11-26 11:57:48,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:57:48,938 INFO L262 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-26 11:57:48,959 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:57:49,306 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 11:57:49,306 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:57:49,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:57:49,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406411767] [2023-11-26 11:57:49,940 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:57:49,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [248275320] [2023-11-26 11:57:49,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [248275320] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:57:49,940 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:57:49,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2023-11-26 11:57:49,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7269424] [2023-11-26 11:57:49,941 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-26 11:57:49,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-26 11:57:49,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:57:49,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-26 11:57:49,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2023-11-26 11:57:49,942 INFO L87 Difference]: Start difference. First operand 291 states and 366 transitions. Second operand has 10 states, 8 states have (on average 5.375) internal successors, (43), 9 states have internal predecessors, (43), 3 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-26 11:57:53,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:57:53,046 INFO L93 Difference]: Finished difference Result 316 states and 370 transitions. [2023-11-26 11:57:53,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-26 11:57:53,047 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 5.375) internal successors, (43), 9 states have internal predecessors, (43), 3 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) Word has length 61 [2023-11-26 11:57:53,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:57:53,049 INFO L225 Difference]: With dead ends: 316 [2023-11-26 11:57:53,049 INFO L226 Difference]: Without dead ends: 315 [2023-11-26 11:57:53,049 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2023-11-26 11:57:53,050 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 396 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 714 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 405 SdHoareTripleChecker+Valid, 529 SdHoareTripleChecker+Invalid, 724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:57:53,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [405 Valid, 529 Invalid, 724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 714 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-11-26 11:57:53,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2023-11-26 11:57:53,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 291. [2023-11-26 11:57:53,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 207 states have (on average 1.565217391304348) internal successors, (324), 268 states have internal predecessors, (324), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-26 11:57:53,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 364 transitions. [2023-11-26 11:57:53,071 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 364 transitions. Word has length 61 [2023-11-26 11:57:53,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:57:53,071 INFO L495 AbstractCegarLoop]: Abstraction has 291 states and 364 transitions. [2023-11-26 11:57:53,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 5.375) internal successors, (43), 9 states have internal predecessors, (43), 3 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-26 11:57:53,072 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 364 transitions. [2023-11-26 11:57:53,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-26 11:57:53,072 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:57:53,073 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, 1, 1, 1, 1, 1] [2023-11-26 11:57:53,078 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-11-26 11:57:53,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-26 11:57:53,278 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-11-26 11:57:53,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:57:53,279 INFO L85 PathProgramCache]: Analyzing trace with hash 29219433, now seen corresponding path program 1 times [2023-11-26 11:57:53,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:57:53,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260736553] [2023-11-26 11:57:53,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:53,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:57:53,286 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:57:53,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2128368202] [2023-11-26 11:57:53,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:53,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:53,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:57:53,288 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:57:53,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-11-26 11:57:53,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:57:53,346 INFO L262 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 11:57:53,348 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:57:53,553 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 11:57:53,554 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:57:53,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:57:53,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260736553] [2023-11-26 11:57:53,554 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:57:53,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2128368202] [2023-11-26 11:57:53,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2128368202] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:57:53,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:57:53,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:57:53,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478103286] [2023-11-26 11:57:53,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:57:53,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:57:53,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:57:53,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:57:53,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:57:53,557 INFO L87 Difference]: Start difference. First operand 291 states and 364 transitions. Second operand has 4 states, 3 states have (on average 13.333333333333334) internal successors, (40), 4 states have internal predecessors, (40), 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 11:57:53,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:57:53,720 INFO L93 Difference]: Finished difference Result 323 states and 376 transitions. [2023-11-26 11:57:53,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:57:53,721 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 13.333333333333334) internal successors, (40), 4 states have internal predecessors, (40), 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 11:57:53,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:57:53,723 INFO L225 Difference]: With dead ends: 323 [2023-11-26 11:57:53,723 INFO L226 Difference]: Without dead ends: 322 [2023-11-26 11:57:53,724 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 66 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 11:57:53,725 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 116 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:57:53,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 234 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:57:53,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2023-11-26 11:57:53,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 291. [2023-11-26 11:57:53,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 207 states have (on average 1.5555555555555556) internal successors, (322), 268 states have internal predecessors, (322), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-26 11:57:53,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 362 transitions. [2023-11-26 11:57:53,759 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 362 transitions. Word has length 69 [2023-11-26 11:57:53,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:57:53,763 INFO L495 AbstractCegarLoop]: Abstraction has 291 states and 362 transitions. [2023-11-26 11:57:53,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 13.333333333333334) internal successors, (40), 4 states have internal predecessors, (40), 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 11:57:53,764 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 362 transitions. [2023-11-26 11:57:53,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-11-26 11:57:53,765 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:57:53,765 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, 1, 1, 1, 1, 1, 1] [2023-11-26 11:57:53,776 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-11-26 11:57:53,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-26 11:57:53,971 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-11-26 11:57:53,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:57:53,971 INFO L85 PathProgramCache]: Analyzing trace with hash 905802544, now seen corresponding path program 1 times [2023-11-26 11:57:53,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:57:53,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953147774] [2023-11-26 11:57:53,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:53,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:57:53,979 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:57:53,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1362404055] [2023-11-26 11:57:53,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:53,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:53,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:57:53,980 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:57:53,981 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-11-26 11:57:54,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:57:54,034 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 11:57:54,036 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:57:54,187 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-26 11:57:54,187 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:57:54,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:57:54,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953147774] [2023-11-26 11:57:54,188 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:57:54,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1362404055] [2023-11-26 11:57:54,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1362404055] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:57:54,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:57:54,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 11:57:54,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434475290] [2023-11-26 11:57:54,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:57:54,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:57:54,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:57:54,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:57:54,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:57:54,191 INFO L87 Difference]: Start difference. First operand 291 states and 362 transitions. Second operand has 6 states, 5 states have (on average 8.8) internal successors, (44), 6 states have internal predecessors, (44), 3 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-26 11:57:54,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:57:54,440 INFO L93 Difference]: Finished difference Result 322 states and 374 transitions. [2023-11-26 11:57:54,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:57:54,440 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.8) internal successors, (44), 6 states have internal predecessors, (44), 3 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 70 [2023-11-26 11:57:54,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:57:54,442 INFO L225 Difference]: With dead ends: 322 [2023-11-26 11:57:54,443 INFO L226 Difference]: Without dead ends: 321 [2023-11-26 11:57:54,443 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 65 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 11:57:54,444 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 58 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 561 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 11:57:54,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 561 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 11:57:54,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2023-11-26 11:57:54,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 291. [2023-11-26 11:57:54,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 207 states have (on average 1.5458937198067633) internal successors, (320), 268 states have internal predecessors, (320), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-26 11:57:54,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 360 transitions. [2023-11-26 11:57:54,467 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 360 transitions. Word has length 70 [2023-11-26 11:57:54,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:57:54,468 INFO L495 AbstractCegarLoop]: Abstraction has 291 states and 360 transitions. [2023-11-26 11:57:54,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.8) internal successors, (44), 6 states have internal predecessors, (44), 3 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-26 11:57:54,468 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 360 transitions. [2023-11-26 11:57:54,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-11-26 11:57:54,470 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:57:54,470 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, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:57:54,481 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2023-11-26 11:57:54,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-26 11:57:54,676 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-11-26 11:57:54,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:57:54,677 INFO L85 PathProgramCache]: Analyzing trace with hash -1984892085, now seen corresponding path program 1 times [2023-11-26 11:57:54,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:57:54,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095457681] [2023-11-26 11:57:54,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:54,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:57:54,685 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:57:54,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [909015566] [2023-11-26 11:57:54,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:54,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:54,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:57:54,687 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:57:54,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-11-26 11:57:54,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:57:54,746 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 11:57:54,748 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:57:54,815 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 11:57:54,815 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:57:54,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:57:54,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095457681] [2023-11-26 11:57:54,816 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:57:54,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [909015566] [2023-11-26 11:57:54,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [909015566] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:57:54,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:57:54,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:57:54,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234206412] [2023-11-26 11:57:54,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:57:54,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:57:54,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:57:54,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:57:54,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:57:54,819 INFO L87 Difference]: Start difference. First operand 291 states and 360 transitions. Second operand has 4 states, 3 states have (on average 14.0) internal successors, (42), 4 states have internal predecessors, (42), 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 11:57:56,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:57:56,125 INFO L93 Difference]: Finished difference Result 313 states and 364 transitions. [2023-11-26 11:57:56,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:57:56,126 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 14.0) internal successors, (42), 4 states have internal predecessors, (42), 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 11:57:56,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:57:56,128 INFO L225 Difference]: With dead ends: 313 [2023-11-26 11:57:56,128 INFO L226 Difference]: Without dead ends: 311 [2023-11-26 11:57:56,128 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 11:57:56,129 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 67 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-26 11:57:56,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 341 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-26 11:57:56,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2023-11-26 11:57:56,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 291. [2023-11-26 11:57:56,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 207 states have (on average 1.5265700483091786) internal successors, (316), 268 states have internal predecessors, (316), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-26 11:57:56,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 356 transitions. [2023-11-26 11:57:56,150 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 356 transitions. Word has length 71 [2023-11-26 11:57:56,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:57:56,151 INFO L495 AbstractCegarLoop]: Abstraction has 291 states and 356 transitions. [2023-11-26 11:57:56,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 14.0) internal successors, (42), 4 states have internal predecessors, (42), 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 11:57:56,151 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 356 transitions. [2023-11-26 11:57:56,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-11-26 11:57:56,152 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:57:56,152 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:57:56,157 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2023-11-26 11:57:56,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-26 11:57:56,357 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-11-26 11:57:56,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:57:56,358 INFO L85 PathProgramCache]: Analyzing trace with hash -1402112366, now seen corresponding path program 1 times [2023-11-26 11:57:56,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:57:56,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970265149] [2023-11-26 11:57:56,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:56,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:57:56,365 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:57:56,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [563807823] [2023-11-26 11:57:56,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:56,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:56,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:57:56,367 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:57:56,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-11-26 11:57:56,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:57:56,421 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 11:57:56,423 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:57:56,487 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 11:57:56,487 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:57:56,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:57:56,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970265149] [2023-11-26 11:57:56,487 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:57:56,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [563807823] [2023-11-26 11:57:56,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [563807823] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:57:56,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:57:56,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:57:56,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479863832] [2023-11-26 11:57:56,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:57:56,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:57:56,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:57:56,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:57:56,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:57:56,494 INFO L87 Difference]: Start difference. First operand 291 states and 356 transitions. Second operand has 4 states, 3 states have (on average 14.333333333333334) internal successors, (43), 4 states have internal predecessors, (43), 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 11:57:57,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:57:57,644 INFO L93 Difference]: Finished difference Result 311 states and 360 transitions. [2023-11-26 11:57:57,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:57:57,645 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 14.333333333333334) internal successors, (43), 4 states have internal predecessors, (43), 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 11:57:57,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:57:57,646 INFO L225 Difference]: With dead ends: 311 [2023-11-26 11:57:57,646 INFO L226 Difference]: Without dead ends: 309 [2023-11-26 11:57:57,647 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 11:57:57,648 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 65 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:57:57,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 344 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-26 11:57:57,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2023-11-26 11:57:57,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 291. [2023-11-26 11:57:57,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 207 states have (on average 1.5072463768115942) internal successors, (312), 268 states have internal predecessors, (312), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-26 11:57:57,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 352 transitions. [2023-11-26 11:57:57,670 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 352 transitions. Word has length 72 [2023-11-26 11:57:57,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:57:57,670 INFO L495 AbstractCegarLoop]: Abstraction has 291 states and 352 transitions. [2023-11-26 11:57:57,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 14.333333333333334) internal successors, (43), 4 states have internal predecessors, (43), 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 11:57:57,670 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 352 transitions. [2023-11-26 11:57:57,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-26 11:57:57,671 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:57:57,672 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:57:57,678 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2023-11-26 11:57:57,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-11-26 11:57:57,878 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-11-26 11:57:57,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:57:57,878 INFO L85 PathProgramCache]: Analyzing trace with hash 291086520, now seen corresponding path program 1 times [2023-11-26 11:57:57,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:57:57,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793948361] [2023-11-26 11:57:57,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:57,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:57:57,886 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:57:57,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [883252174] [2023-11-26 11:57:57,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:57,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:57,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:57:57,888 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:57:57,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-11-26 11:57:57,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:57:57,949 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-26 11:57:57,951 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:57:58,251 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-26 11:57:58,251 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:57:58,707 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-26 11:57:58,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:57:58,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793948361] [2023-11-26 11:57:58,708 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:57:58,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [883252174] [2023-11-26 11:57:58,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [883252174] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:57:58,708 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:57:58,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-11-26 11:57:58,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885446983] [2023-11-26 11:57:58,709 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 11:57:58,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-26 11:57:58,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:57:58,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-26 11:57:58,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-11-26 11:57:58,711 INFO L87 Difference]: Start difference. First operand 291 states and 352 transitions. Second operand has 11 states, 8 states have (on average 12.125) internal successors, (97), 9 states have internal predecessors, (97), 4 states have call successors, (14), 1 states have call predecessors, (14), 2 states have return successors, (14), 6 states have call predecessors, (14), 4 states have call successors, (14) [2023-11-26 11:58:02,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:58:02,119 INFO L93 Difference]: Finished difference Result 362 states and 396 transitions. [2023-11-26 11:58:02,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 11:58:02,121 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 12.125) internal successors, (97), 9 states have internal predecessors, (97), 4 states have call successors, (14), 1 states have call predecessors, (14), 2 states have return successors, (14), 6 states have call predecessors, (14), 4 states have call successors, (14) Word has length 78 [2023-11-26 11:58:02,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:58:02,123 INFO L225 Difference]: With dead ends: 362 [2023-11-26 11:58:02,123 INFO L226 Difference]: Without dead ends: 361 [2023-11-26 11:58:02,124 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 144 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2023-11-26 11:58:02,126 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 277 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 351 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 422 SdHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-11-26 11:58:02,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [282 Valid, 422 Invalid, 361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 351 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-11-26 11:58:02,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2023-11-26 11:58:02,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 307. [2023-11-26 11:58:02,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 222 states have (on average 1.527027027027027) internal successors, (339), 283 states have internal predecessors, (339), 21 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2023-11-26 11:58:02,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 381 transitions. [2023-11-26 11:58:02,159 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 381 transitions. Word has length 78 [2023-11-26 11:58:02,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:58:02,159 INFO L495 AbstractCegarLoop]: Abstraction has 307 states and 381 transitions. [2023-11-26 11:58:02,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 12.125) internal successors, (97), 9 states have internal predecessors, (97), 4 states have call successors, (14), 1 states have call predecessors, (14), 2 states have return successors, (14), 6 states have call predecessors, (14), 4 states have call successors, (14) [2023-11-26 11:58:02,160 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 381 transitions. [2023-11-26 11:58:02,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-11-26 11:58:02,161 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:58:02,161 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:58:02,173 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2023-11-26 11:58:02,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:58:02,368 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-11-26 11:58:02,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:58:02,368 INFO L85 PathProgramCache]: Analyzing trace with hash 433747667, now seen corresponding path program 1 times [2023-11-26 11:58:02,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:58:02,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630373915] [2023-11-26 11:58:02,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:02,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:58:02,380 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:58:02,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [265909071] [2023-11-26 11:58:02,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:02,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:58:02,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:58:02,382 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:58:02,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c99097-bcfb-46c3-838d-311ad715aa9e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-11-26 11:58:02,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:02,451 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-26 11:58:02,454 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:58:03,329 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-26 11:58:03,329 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:58:07,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:58:07,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630373915] [2023-11-26 11:58:07,689 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:58:07,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [265909071] [2023-11-26 11:58:07,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [265909071] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:58:07,690 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:58:07,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2023-11-26 11:58:07,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620919499] [2023-11-26 11:58:07,690 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-26 11:58:07,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-26 11:58:07,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:58:07,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-26 11:58:07,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=76, Unknown=1, NotChecked=0, Total=110 [2023-11-26 11:58:07,691 INFO L87 Difference]: Start difference. First operand 307 states and 381 transitions. Second operand has 9 states, 7 states have (on average 7.571428571428571) internal successors, (53), 8 states have internal predecessors, (53), 3 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7)