./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/loop-invgen/nested6.i --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_ec3e8e2e-6d12-47d7-99d6-144ddebb68ba/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3e8e2e-6d12-47d7-99d6-144ddebb68ba/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_ec3e8e2e-6d12-47d7-99d6-144ddebb68ba/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3e8e2e-6d12-47d7-99d6-144ddebb68ba/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-invgen/nested6.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3e8e2e-6d12-47d7-99d6-144ddebb68ba/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_ec3e8e2e-6d12-47d7-99d6-144ddebb68ba/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 327b0d5e70f014fe291a4771fe2bbb17cb1148e77fe8f6a261d10a47df8adacc --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:48:30,502 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:48:30,639 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3e8e2e-6d12-47d7-99d6-144ddebb68ba/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-26 11:48:30,646 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:48:30,647 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:48:30,673 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:48:30,676 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:48:30,677 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:48:30,678 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:48:30,683 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:48:30,683 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:48:30,684 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:48:30,685 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:48:30,687 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:48:30,687 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:48:30,688 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:48:30,688 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 11:48:30,689 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:48:30,689 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:48:30,689 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:48:30,690 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:48:30,690 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 11:48:30,691 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:48:30,691 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 11:48:30,692 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-26 11:48:30,692 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 11:48:30,692 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:48:30,693 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:48:30,693 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:48:30,694 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:48:30,696 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:48:30,696 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:48:30,696 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:48:30,697 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:48:30,697 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:48:30,697 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:48:30,698 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 11:48:30,698 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:48:30,698 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:48:30,698 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:48:30,699 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:48:30,699 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 11:48:30,699 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:48:30,699 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:48:30,700 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_ec3e8e2e-6d12-47d7-99d6-144ddebb68ba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3e8e2e-6d12-47d7-99d6-144ddebb68ba/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 327b0d5e70f014fe291a4771fe2bbb17cb1148e77fe8f6a261d10a47df8adacc [2023-11-26 11:48:31,052 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:48:31,088 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:48:31,091 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:48:31,093 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:48:31,093 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:48:31,096 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3e8e2e-6d12-47d7-99d6-144ddebb68ba/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/loop-invgen/nested6.i [2023-11-26 11:48:34,317 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:48:34,496 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:48:34,497 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3e8e2e-6d12-47d7-99d6-144ddebb68ba/sv-benchmarks/c/loop-invgen/nested6.i [2023-11-26 11:48:34,508 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3e8e2e-6d12-47d7-99d6-144ddebb68ba/bin/uautomizer-verify-VRDe98Ueme/data/a583160b2/e42fe1dbacd947a991f4ec47fa9108d8/FLAG27a4f6617 [2023-11-26 11:48:34,526 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3e8e2e-6d12-47d7-99d6-144ddebb68ba/bin/uautomizer-verify-VRDe98Ueme/data/a583160b2/e42fe1dbacd947a991f4ec47fa9108d8 [2023-11-26 11:48:34,531 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:48:34,533 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:48:34,537 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:48:34,538 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:48:34,543 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:48:34,544 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:48:34" (1/1) ... [2023-11-26 11:48:34,545 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b6e7153 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:34, skipping insertion in model container [2023-11-26 11:48:34,545 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:48:34" (1/1) ... [2023-11-26 11:48:34,573 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:48:34,790 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:48:34,802 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:48:34,837 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:48:34,850 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:48:34,851 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:34 WrapperNode [2023-11-26 11:48:34,851 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:48:34,852 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:48:34,852 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:48:34,853 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:48:34,860 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:34" (1/1) ... [2023-11-26 11:48:34,868 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:34" (1/1) ... [2023-11-26 11:48:34,890 INFO L138 Inliner]: procedures = 16, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 79 [2023-11-26 11:48:34,891 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:48:34,892 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:48:34,892 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:48:34,892 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:48:34,904 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:34" (1/1) ... [2023-11-26 11:48:34,904 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:34" (1/1) ... [2023-11-26 11:48:34,906 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:34" (1/1) ... [2023-11-26 11:48:34,927 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 11:48:34,936 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:34" (1/1) ... [2023-11-26 11:48:34,938 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:34" (1/1) ... [2023-11-26 11:48:34,941 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:34" (1/1) ... [2023-11-26 11:48:34,949 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:34" (1/1) ... [2023-11-26 11:48:34,957 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:34" (1/1) ... [2023-11-26 11:48:34,958 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:34" (1/1) ... [2023-11-26 11:48:34,961 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:48:34,972 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:48:34,972 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:48:34,973 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:48:34,974 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:34" (1/1) ... [2023-11-26 11:48:34,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:48:34,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3e8e2e-6d12-47d7-99d6-144ddebb68ba/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:48:35,014 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3e8e2e-6d12-47d7-99d6-144ddebb68ba/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:48:35,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3e8e2e-6d12-47d7-99d6-144ddebb68ba/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:48:35,058 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:48:35,058 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 11:48:35,059 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:48:35,059 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:48:35,059 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-26 11:48:35,059 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-26 11:48:35,140 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:48:35,146 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:48:35,416 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:48:35,459 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:48:35,459 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-26 11:48:35,460 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:48:35 BoogieIcfgContainer [2023-11-26 11:48:35,460 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:48:35,463 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:48:35,464 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:48:35,468 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:48:35,468 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:48:34" (1/3) ... [2023-11-26 11:48:35,469 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@405e775d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:48:35, skipping insertion in model container [2023-11-26 11:48:35,471 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:34" (2/3) ... [2023-11-26 11:48:35,473 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@405e775d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:48:35, skipping insertion in model container [2023-11-26 11:48:35,474 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:48:35" (3/3) ... [2023-11-26 11:48:35,475 INFO L112 eAbstractionObserver]: Analyzing ICFG nested6.i [2023-11-26 11:48:35,496 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:48:35,497 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-11-26 11:48:35,568 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:48:35,577 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;@7012b16, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:48:35,578 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2023-11-26 11:48:35,582 INFO L276 IsEmpty]: Start isEmpty. Operand has 42 states, 27 states have (on average 1.7777777777777777) internal successors, (48), 38 states have internal predecessors, (48), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-26 11:48:35,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-26 11:48:35,591 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:48:35,592 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-26 11:48:35,592 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-11-26 11:48:35,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:35,600 INFO L85 PathProgramCache]: Analyzing trace with hash 128684371, now seen corresponding path program 1 times [2023-11-26 11:48:35,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:48:35,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427772645] [2023-11-26 11:48:35,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:35,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:48:35,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:35,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:48:35,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:48:35,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427772645] [2023-11-26 11:48:35,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427772645] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:48:35,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:48:35,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:48:35,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373155296] [2023-11-26 11:48:35,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:48:35,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:48:35,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:48:35,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:48:35,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:48:35,927 INFO L87 Difference]: Start difference. First operand has 42 states, 27 states have (on average 1.7777777777777777) internal successors, (48), 38 states have internal predecessors, (48), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:48:36,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:48:36,094 INFO L93 Difference]: Finished difference Result 108 states and 150 transitions. [2023-11-26 11:48:36,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:48:36,096 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-26 11:48:36,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:48:36,106 INFO L225 Difference]: With dead ends: 108 [2023-11-26 11:48:36,106 INFO L226 Difference]: Without dead ends: 63 [2023-11-26 11:48:36,109 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:48:36,114 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 26 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:48:36,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 76 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:48:36,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2023-11-26 11:48:36,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 54. [2023-11-26 11:48:36,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 37 states have (on average 1.5405405405405406) internal successors, (57), 48 states have internal predecessors, (57), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-26 11:48:36,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 69 transitions. [2023-11-26 11:48:36,194 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 69 transitions. Word has length 5 [2023-11-26 11:48:36,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:48:36,194 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 69 transitions. [2023-11-26 11:48:36,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:48:36,195 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 69 transitions. [2023-11-26 11:48:36,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-26 11:48:36,196 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:48:36,196 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:48:36,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 11:48:36,197 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-11-26 11:48:36,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:36,198 INFO L85 PathProgramCache]: Analyzing trace with hash 975641147, now seen corresponding path program 1 times [2023-11-26 11:48:36,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:48:36,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311647781] [2023-11-26 11:48:36,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:36,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:48:36,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:36,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:48:36,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:48:36,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311647781] [2023-11-26 11:48:36,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311647781] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:48:36,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:48:36,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:48:36,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628943798] [2023-11-26 11:48:36,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:48:36,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:48:36,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:48:36,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:48:36,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:48:36,366 INFO L87 Difference]: Start difference. First operand 54 states and 69 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:48:36,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:48:36,448 INFO L93 Difference]: Finished difference Result 63 states and 74 transitions. [2023-11-26 11:48:36,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:48:36,449 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-11-26 11:48:36,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:48:36,451 INFO L225 Difference]: With dead ends: 63 [2023-11-26 11:48:36,451 INFO L226 Difference]: Without dead ends: 61 [2023-11-26 11:48:36,452 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 11:48:36,453 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 20 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:48:36,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 91 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:48:36,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2023-11-26 11:48:36,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 57. [2023-11-26 11:48:36,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 40 states have (on average 1.5) internal successors, (60), 51 states have internal predecessors, (60), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-26 11:48:36,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 72 transitions. [2023-11-26 11:48:36,470 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 72 transitions. Word has length 9 [2023-11-26 11:48:36,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:48:36,471 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 72 transitions. [2023-11-26 11:48:36,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:48:36,472 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 72 transitions. [2023-11-26 11:48:36,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-26 11:48:36,474 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:48:36,474 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:48:36,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 11:48:36,475 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-11-26 11:48:36,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:36,482 INFO L85 PathProgramCache]: Analyzing trace with hash 1289018595, now seen corresponding path program 1 times [2023-11-26 11:48:36,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:48:36,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88447505] [2023-11-26 11:48:36,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:36,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:48:36,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:36,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:48:36,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:48:36,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88447505] [2023-11-26 11:48:36,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88447505] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:48:36,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:48:36,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:48:36,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100880887] [2023-11-26 11:48:36,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:48:36,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:48:36,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:48:36,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:48:36,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:48:36,568 INFO L87 Difference]: Start difference. First operand 57 states and 72 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:48:36,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:48:36,679 INFO L93 Difference]: Finished difference Result 66 states and 77 transitions. [2023-11-26 11:48:36,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 11:48:36,679 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-11-26 11:48:36,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:48:36,681 INFO L225 Difference]: With dead ends: 66 [2023-11-26 11:48:36,681 INFO L226 Difference]: Without dead ends: 65 [2023-11-26 11:48:36,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:48:36,683 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 42 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:48:36,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 132 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:48:36,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2023-11-26 11:48:36,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 57. [2023-11-26 11:48:36,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 40 states have (on average 1.475) internal successors, (59), 51 states have internal predecessors, (59), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-26 11:48:36,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 71 transitions. [2023-11-26 11:48:36,699 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 71 transitions. Word has length 11 [2023-11-26 11:48:36,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:48:36,704 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 71 transitions. [2023-11-26 11:48:36,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:48:36,704 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 71 transitions. [2023-11-26 11:48:36,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-26 11:48:36,705 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:48:36,706 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:48:36,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 11:48:36,706 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-11-26 11:48:36,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:36,707 INFO L85 PathProgramCache]: Analyzing trace with hash 1281822738, now seen corresponding path program 1 times [2023-11-26 11:48:36,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:48:36,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973634690] [2023-11-26 11:48:36,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:36,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:48:36,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:36,808 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:48:36,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:48:36,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973634690] [2023-11-26 11:48:36,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973634690] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:48:36,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1458288195] [2023-11-26 11:48:36,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:36,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:48:36,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3e8e2e-6d12-47d7-99d6-144ddebb68ba/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:48:36,813 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3e8e2e-6d12-47d7-99d6-144ddebb68ba/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:48:36,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3e8e2e-6d12-47d7-99d6-144ddebb68ba/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 11:48:36,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:36,888 INFO L262 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 11:48:36,893 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:48:37,026 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:48:37,027 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:48:37,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1458288195] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:48:37,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:48:37,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 8 [2023-11-26 11:48:37,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319181515] [2023-11-26 11:48:37,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:48:37,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:48:37,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:48:37,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:48:37,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-26 11:48:37,031 INFO L87 Difference]: Start difference. First operand 57 states and 71 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:48:37,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:48:37,166 INFO L93 Difference]: Finished difference Result 114 states and 136 transitions. [2023-11-26 11:48:37,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:48:37,167 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-11-26 11:48:37,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:48:37,169 INFO L225 Difference]: With dead ends: 114 [2023-11-26 11:48:37,169 INFO L226 Difference]: Without dead ends: 77 [2023-11-26 11:48:37,170 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-26 11:48:37,171 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 46 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:48:37,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 110 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:48:37,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2023-11-26 11:48:37,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 58. [2023-11-26 11:48:37,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 41 states have (on average 1.4634146341463414) internal successors, (60), 52 states have internal predecessors, (60), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-26 11:48:37,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 72 transitions. [2023-11-26 11:48:37,189 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 72 transitions. Word has length 12 [2023-11-26 11:48:37,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:48:37,189 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 72 transitions. [2023-11-26 11:48:37,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:48:37,190 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 72 transitions. [2023-11-26 11:48:37,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-26 11:48:37,191 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:48:37,191 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:48:37,198 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3e8e2e-6d12-47d7-99d6-144ddebb68ba/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-26 11:48:37,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3e8e2e-6d12-47d7-99d6-144ddebb68ba/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:48:37,398 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-11-26 11:48:37,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:37,399 INFO L85 PathProgramCache]: Analyzing trace with hash 1304870880, now seen corresponding path program 1 times [2023-11-26 11:48:37,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:48:37,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662134034] [2023-11-26 11:48:37,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:37,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:48:37,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:37,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:48:37,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:48:37,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662134034] [2023-11-26 11:48:37,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662134034] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:48:37,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:48:37,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:48:37,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6550647] [2023-11-26 11:48:37,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:48:37,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:48:37,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:48:37,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:48:37,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:48:37,470 INFO L87 Difference]: Start difference. First operand 58 states and 72 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:48:37,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:48:37,567 INFO L93 Difference]: Finished difference Result 77 states and 93 transitions. [2023-11-26 11:48:37,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:48:37,568 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-11-26 11:48:37,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:48:37,571 INFO L225 Difference]: With dead ends: 77 [2023-11-26 11:48:37,571 INFO L226 Difference]: Without dead ends: 76 [2023-11-26 11:48:37,572 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:48:37,578 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 46 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:48:37,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 115 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:48:37,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2023-11-26 11:48:37,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 71. [2023-11-26 11:48:37,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 51 states have (on average 1.4509803921568627) internal successors, (74), 63 states have internal predecessors, (74), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-26 11:48:37,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 92 transitions. [2023-11-26 11:48:37,613 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 92 transitions. Word has length 12 [2023-11-26 11:48:37,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:48:37,614 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 92 transitions. [2023-11-26 11:48:37,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:48:37,614 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 92 transitions. [2023-11-26 11:48:37,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-26 11:48:37,616 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:48:37,616 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:48:37,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-26 11:48:37,617 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-11-26 11:48:37,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:37,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1008703825, now seen corresponding path program 1 times [2023-11-26 11:48:37,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:48:37,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407088521] [2023-11-26 11:48:37,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:37,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:48:37,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:37,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-26 11:48:37,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:37,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:48:37,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:48:37,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407088521] [2023-11-26 11:48:37,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407088521] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:48:37,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:48:37,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 11:48:37,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948166314] [2023-11-26 11:48:37,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:48:37,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 11:48:37,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:48:37,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 11:48:37,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:48:37,769 INFO L87 Difference]: Start difference. First operand 71 states and 92 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 11:48:37,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:48:37,924 INFO L93 Difference]: Finished difference Result 109 states and 133 transitions. [2023-11-26 11:48:37,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-26 11:48:37,925 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2023-11-26 11:48:37,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:48:37,927 INFO L225 Difference]: With dead ends: 109 [2023-11-26 11:48:37,927 INFO L226 Difference]: Without dead ends: 108 [2023-11-26 11:48:37,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-11-26 11:48:37,929 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 85 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:48:37,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 168 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:48:37,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2023-11-26 11:48:37,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 71. [2023-11-26 11:48:37,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 51 states have (on average 1.4313725490196079) internal successors, (73), 63 states have internal predecessors, (73), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-26 11:48:37,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 91 transitions. [2023-11-26 11:48:37,944 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 91 transitions. Word has length 18 [2023-11-26 11:48:37,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:48:37,945 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 91 transitions. [2023-11-26 11:48:37,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 11:48:37,945 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 91 transitions. [2023-11-26 11:48:37,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-26 11:48:37,947 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:48:37,947 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:48:37,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-26 11:48:37,948 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-11-26 11:48:37,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:37,948 INFO L85 PathProgramCache]: Analyzing trace with hash -526870931, now seen corresponding path program 1 times [2023-11-26 11:48:37,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:48:37,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421524995] [2023-11-26 11:48:37,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:37,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:48:37,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:38,098 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 11:48:38,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:48:38,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421524995] [2023-11-26 11:48:38,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421524995] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:48:38,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [608750535] [2023-11-26 11:48:38,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:38,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:48:38,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3e8e2e-6d12-47d7-99d6-144ddebb68ba/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:48:38,113 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3e8e2e-6d12-47d7-99d6-144ddebb68ba/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:48:38,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3e8e2e-6d12-47d7-99d6-144ddebb68ba/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 11:48:38,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:38,171 INFO L262 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 11:48:38,173 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:48:38,245 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:48:38,246 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:48:38,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [608750535] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:48:38,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:48:38,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4] total 9 [2023-11-26 11:48:38,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611806208] [2023-11-26 11:48:38,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:48:38,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:48:38,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:48:38,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:48:38,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-26 11:48:38,248 INFO L87 Difference]: Start difference. First operand 71 states and 91 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:48:38,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:48:38,394 INFO L93 Difference]: Finished difference Result 137 states and 169 transitions. [2023-11-26 11:48:38,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:48:38,395 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-11-26 11:48:38,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:48:38,396 INFO L225 Difference]: With dead ends: 137 [2023-11-26 11:48:38,396 INFO L226 Difference]: Without dead ends: 83 [2023-11-26 11:48:38,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-11-26 11:48:38,398 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 66 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:48:38,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 134 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:48:38,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2023-11-26 11:48:38,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 72. [2023-11-26 11:48:38,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 52 states have (on average 1.4230769230769231) internal successors, (74), 64 states have internal predecessors, (74), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-26 11:48:38,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 92 transitions. [2023-11-26 11:48:38,412 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 92 transitions. Word has length 18 [2023-11-26 11:48:38,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:48:38,413 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 92 transitions. [2023-11-26 11:48:38,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:48:38,413 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 92 transitions. [2023-11-26 11:48:38,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-26 11:48:38,414 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:48:38,414 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:48:38,425 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3e8e2e-6d12-47d7-99d6-144ddebb68ba/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-26 11:48:38,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3e8e2e-6d12-47d7-99d6-144ddebb68ba/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:48:38,621 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-11-26 11:48:38,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:38,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1205047589, now seen corresponding path program 1 times [2023-11-26 11:48:38,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:48:38,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738825261] [2023-11-26 11:48:38,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:38,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:48:38,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:38,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-26 11:48:38,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:38,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:48:38,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:48:38,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738825261] [2023-11-26 11:48:38,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738825261] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:48:38,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:48:38,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 11:48:38,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262489693] [2023-11-26 11:48:38,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:48:38,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 11:48:38,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:48:38,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 11:48:38,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:48:38,734 INFO L87 Difference]: Start difference. First operand 72 states and 92 transitions. Second operand has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 11:48:38,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:48:38,876 INFO L93 Difference]: Finished difference Result 83 states and 100 transitions. [2023-11-26 11:48:38,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 11:48:38,877 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2023-11-26 11:48:38,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:48:38,878 INFO L225 Difference]: With dead ends: 83 [2023-11-26 11:48:38,878 INFO L226 Difference]: Without dead ends: 82 [2023-11-26 11:48:38,879 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-11-26 11:48:38,883 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 52 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:48:38,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 129 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:48:38,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2023-11-26 11:48:38,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 78. [2023-11-26 11:48:38,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 57 states have (on average 1.3859649122807018) internal successors, (79), 69 states have internal predecessors, (79), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-26 11:48:38,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 99 transitions. [2023-11-26 11:48:38,919 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 99 transitions. Word has length 19 [2023-11-26 11:48:38,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:48:38,920 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 99 transitions. [2023-11-26 11:48:38,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 11:48:38,920 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 99 transitions. [2023-11-26 11:48:38,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-26 11:48:38,921 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:48:38,922 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:48:38,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-26 11:48:38,922 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-11-26 11:48:38,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:38,923 INFO L85 PathProgramCache]: Analyzing trace with hash -705769238, now seen corresponding path program 1 times [2023-11-26 11:48:38,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:48:38,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735345887] [2023-11-26 11:48:38,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:38,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:48:38,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:38,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 11:48:38,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:38,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-26 11:48:38,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:38,992 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-26 11:48:38,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:48:38,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735345887] [2023-11-26 11:48:38,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735345887] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:48:38,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [945287929] [2023-11-26 11:48:38,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:38,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:48:38,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3e8e2e-6d12-47d7-99d6-144ddebb68ba/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:48:38,995 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3e8e2e-6d12-47d7-99d6-144ddebb68ba/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:48:39,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3e8e2e-6d12-47d7-99d6-144ddebb68ba/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 11:48:39,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:39,055 INFO L262 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 11:48:39,058 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:48:39,121 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-26 11:48:39,121 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:48:39,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [945287929] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:48:39,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:48:39,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-26 11:48:39,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592030467] [2023-11-26 11:48:39,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:48:39,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:48:39,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:48:39,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:48:39,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:48:39,124 INFO L87 Difference]: Start difference. First operand 78 states and 99 transitions. Second operand has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-26 11:48:39,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:48:39,198 INFO L93 Difference]: Finished difference Result 81 states and 99 transitions. [2023-11-26 11:48:39,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:48:39,201 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 27 [2023-11-26 11:48:39,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:48:39,202 INFO L225 Difference]: With dead ends: 81 [2023-11-26 11:48:39,202 INFO L226 Difference]: Without dead ends: 78 [2023-11-26 11:48:39,202 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-26 11:48:39,203 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 39 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:48:39,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 129 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:48:39,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2023-11-26 11:48:39,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 75. [2023-11-26 11:48:39,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 57 states have (on average 1.3333333333333333) internal successors, (76), 66 states have internal predecessors, (76), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-26 11:48:39,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 96 transitions. [2023-11-26 11:48:39,216 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 96 transitions. Word has length 27 [2023-11-26 11:48:39,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:48:39,216 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 96 transitions. [2023-11-26 11:48:39,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-26 11:48:39,217 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 96 transitions. [2023-11-26 11:48:39,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-26 11:48:39,218 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:48:39,218 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:48:39,226 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3e8e2e-6d12-47d7-99d6-144ddebb68ba/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-26 11:48:39,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3e8e2e-6d12-47d7-99d6-144ddebb68ba/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:48:39,424 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-11-26 11:48:39,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:39,424 INFO L85 PathProgramCache]: Analyzing trace with hash -682721096, now seen corresponding path program 1 times [2023-11-26 11:48:39,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:48:39,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306209003] [2023-11-26 11:48:39,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:39,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:48:39,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:39,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 11:48:39,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:39,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-26 11:48:39,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:39,472 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-26 11:48:39,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:48:39,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306209003] [2023-11-26 11:48:39,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306209003] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:48:39,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:48:39,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:48:39,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880232781] [2023-11-26 11:48:39,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:48:39,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:48:39,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:48:39,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:48:39,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:48:39,475 INFO L87 Difference]: Start difference. First operand 75 states and 96 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-26 11:48:39,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:48:39,532 INFO L93 Difference]: Finished difference Result 125 states and 162 transitions. [2023-11-26 11:48:39,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:48:39,533 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 27 [2023-11-26 11:48:39,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:48:39,536 INFO L225 Difference]: With dead ends: 125 [2023-11-26 11:48:39,537 INFO L226 Difference]: Without dead ends: 77 [2023-11-26 11:48:39,540 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 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 11:48:39,542 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 25 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:48:39,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 62 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:48:39,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2023-11-26 11:48:39,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2023-11-26 11:48:39,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 59 states have (on average 1.3220338983050848) internal successors, (78), 68 states have internal predecessors, (78), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-26 11:48:39,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 98 transitions. [2023-11-26 11:48:39,560 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 98 transitions. Word has length 27 [2023-11-26 11:48:39,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:48:39,561 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 98 transitions. [2023-11-26 11:48:39,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-26 11:48:39,561 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 98 transitions. [2023-11-26 11:48:39,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-26 11:48:39,567 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:48:39,567 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:48:39,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-26 11:48:39,568 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-11-26 11:48:39,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:39,569 INFO L85 PathProgramCache]: Analyzing trace with hash -404009842, now seen corresponding path program 1 times [2023-11-26 11:48:39,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:48:39,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733527089] [2023-11-26 11:48:39,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:39,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:48:39,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:39,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 11:48:39,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:39,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-26 11:48:39,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:39,667 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-26 11:48:39,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:48:39,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733527089] [2023-11-26 11:48:39,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733527089] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:48:39,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [347686419] [2023-11-26 11:48:39,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:39,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:48:39,674 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3e8e2e-6d12-47d7-99d6-144ddebb68ba/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:48:39,683 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3e8e2e-6d12-47d7-99d6-144ddebb68ba/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:48:39,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3e8e2e-6d12-47d7-99d6-144ddebb68ba/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-26 11:48:39,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:39,726 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 11:48:39,728 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:48:39,771 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-26 11:48:39,771 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:48:39,832 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-26 11:48:39,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [347686419] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:48:39,833 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:48:39,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2023-11-26 11:48:39,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090904342] [2023-11-26 11:48:39,834 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:48:39,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-26 11:48:39,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:48:39,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-26 11:48:39,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-26 11:48:39,835 INFO L87 Difference]: Start difference. First operand 77 states and 98 transitions. Second operand has 10 states, 9 states have (on average 5.555555555555555) internal successors, (50), 10 states have internal predecessors, (50), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-26 11:48:39,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:48:39,937 INFO L93 Difference]: Finished difference Result 110 states and 136 transitions. [2023-11-26 11:48:39,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 11:48:39,938 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.555555555555555) internal successors, (50), 10 states have internal predecessors, (50), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 28 [2023-11-26 11:48:39,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:48:39,939 INFO L225 Difference]: With dead ends: 110 [2023-11-26 11:48:39,940 INFO L226 Difference]: Without dead ends: 107 [2023-11-26 11:48:39,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2023-11-26 11:48:39,941 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 97 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:48:39,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 140 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:48:39,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2023-11-26 11:48:39,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 100. [2023-11-26 11:48:39,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 80 states have (on average 1.3125) internal successors, (105), 89 states have internal predecessors, (105), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-26 11:48:39,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 131 transitions. [2023-11-26 11:48:39,956 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 131 transitions. Word has length 28 [2023-11-26 11:48:39,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:48:39,956 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 131 transitions. [2023-11-26 11:48:39,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.555555555555555) internal successors, (50), 10 states have internal predecessors, (50), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-26 11:48:39,956 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 131 transitions. [2023-11-26 11:48:39,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-26 11:48:39,957 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:48:39,958 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:48:39,971 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3e8e2e-6d12-47d7-99d6-144ddebb68ba/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-26 11:48:40,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3e8e2e-6d12-47d7-99d6-144ddebb68ba/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-26 11:48:40,164 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-11-26 11:48:40,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:40,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1928789992, now seen corresponding path program 1 times [2023-11-26 11:48:40,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:48:40,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304019030] [2023-11-26 11:48:40,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:40,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:48:40,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:40,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-26 11:48:40,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:40,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-26 11:48:40,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:40,312 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 11:48:40,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:48:40,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304019030] [2023-11-26 11:48:40,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304019030] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:48:40,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794926770] [2023-11-26 11:48:40,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:40,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:48:40,314 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3e8e2e-6d12-47d7-99d6-144ddebb68ba/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:48:40,315 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3e8e2e-6d12-47d7-99d6-144ddebb68ba/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:48:40,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3e8e2e-6d12-47d7-99d6-144ddebb68ba/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-26 11:48:40,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:40,370 INFO L262 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-26 11:48:40,372 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:48:40,446 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 11:48:40,446 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:48:40,549 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 11:48:40,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1794926770] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:48:40,549 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:48:40,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 18 [2023-11-26 11:48:40,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933524449] [2023-11-26 11:48:40,552 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:48:40,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-26 11:48:40,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:48:40,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-26 11:48:40,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2023-11-26 11:48:40,556 INFO L87 Difference]: Start difference. First operand 100 states and 131 transitions. Second operand has 19 states, 18 states have (on average 3.111111111111111) internal successors, (56), 19 states have internal predecessors, (56), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-26 11:48:40,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:48:40,966 INFO L93 Difference]: Finished difference Result 267 states and 344 transitions. [2023-11-26 11:48:40,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-26 11:48:40,967 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 3.111111111111111) internal successors, (56), 19 states have internal predecessors, (56), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) Word has length 30 [2023-11-26 11:48:40,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:48:40,970 INFO L225 Difference]: With dead ends: 267 [2023-11-26 11:48:40,970 INFO L226 Difference]: Without dead ends: 266 [2023-11-26 11:48:40,971 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=232, Invalid=580, Unknown=0, NotChecked=0, Total=812 [2023-11-26 11:48:40,971 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 206 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 396 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 11:48:40,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 396 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 11:48:40,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2023-11-26 11:48:40,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 121. [2023-11-26 11:48:40,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 98 states have (on average 1.2857142857142858) internal successors, (126), 107 states have internal predecessors, (126), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-26 11:48:40,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 158 transitions. [2023-11-26 11:48:40,996 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 158 transitions. Word has length 30 [2023-11-26 11:48:40,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:48:40,996 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 158 transitions. [2023-11-26 11:48:40,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 3.111111111111111) internal successors, (56), 19 states have internal predecessors, (56), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-26 11:48:40,996 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 158 transitions. [2023-11-26 11:48:40,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-26 11:48:40,997 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:48:40,997 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:48:41,008 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3e8e2e-6d12-47d7-99d6-144ddebb68ba/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-26 11:48:41,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3e8e2e-6d12-47d7-99d6-144ddebb68ba/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:48:41,204 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-11-26 11:48:41,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:41,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1827055575, now seen corresponding path program 1 times [2023-11-26 11:48:41,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:48:41,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109668344] [2023-11-26 11:48:41,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:41,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:48:41,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:41,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 11:48:41,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:41,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-26 11:48:41,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:41,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-26 11:48:41,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:41,339 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-26 11:48:41,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:48:41,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109668344] [2023-11-26 11:48:41,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109668344] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:48:41,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:48:41,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-26 11:48:41,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450652286] [2023-11-26 11:48:41,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:48:41,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-26 11:48:41,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:48:41,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-26 11:48:41,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-26 11:48:41,344 INFO L87 Difference]: Start difference. First operand 121 states and 158 transitions. Second operand has 9 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-26 11:48:41,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:48:41,563 INFO L93 Difference]: Finished difference Result 169 states and 216 transitions. [2023-11-26 11:48:41,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-26 11:48:41,564 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 33 [2023-11-26 11:48:41,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:48:41,567 INFO L225 Difference]: With dead ends: 169 [2023-11-26 11:48:41,567 INFO L226 Difference]: Without dead ends: 168 [2023-11-26 11:48:41,567 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2023-11-26 11:48:41,568 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 92 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:48:41,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 180 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:48:41,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2023-11-26 11:48:41,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 121. [2023-11-26 11:48:41,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 98 states have (on average 1.2755102040816326) internal successors, (125), 107 states have internal predecessors, (125), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-26 11:48:41,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 157 transitions. [2023-11-26 11:48:41,590 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 157 transitions. Word has length 33 [2023-11-26 11:48:41,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:48:41,590 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 157 transitions. [2023-11-26 11:48:41,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-26 11:48:41,590 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 157 transitions. [2023-11-26 11:48:41,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-26 11:48:41,592 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:48:41,592 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:48:41,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-26 11:48:41,592 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-11-26 11:48:41,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:41,593 INFO L85 PathProgramCache]: Analyzing trace with hash -804147891, now seen corresponding path program 1 times [2023-11-26 11:48:41,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:48:41,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592193090] [2023-11-26 11:48:41,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:41,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:48:41,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:41,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 11:48:41,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:41,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-26 11:48:41,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:41,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-26 11:48:41,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:41,761 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-26 11:48:41,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:48:41,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592193090] [2023-11-26 11:48:41,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592193090] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:48:41,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1222322067] [2023-11-26 11:48:41,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:41,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:48:41,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3e8e2e-6d12-47d7-99d6-144ddebb68ba/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:48:41,782 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3e8e2e-6d12-47d7-99d6-144ddebb68ba/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:48:41,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3e8e2e-6d12-47d7-99d6-144ddebb68ba/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-26 11:48:41,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:41,838 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-26 11:48:41,840 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:48:41,915 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-26 11:48:41,915 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:48:42,019 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-26 11:48:42,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1222322067] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:48:42,019 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:48:42,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 18 [2023-11-26 11:48:42,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14325942] [2023-11-26 11:48:42,020 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:48:42,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-26 11:48:42,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:48:42,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-26 11:48:42,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2023-11-26 11:48:42,021 INFO L87 Difference]: Start difference. First operand 121 states and 157 transitions. Second operand has 19 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 19 states have internal predecessors, (53), 6 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 5 states have call predecessors, (9), 6 states have call successors, (9) [2023-11-26 11:48:42,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:48:42,768 INFO L93 Difference]: Finished difference Result 355 states and 460 transitions. [2023-11-26 11:48:42,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-11-26 11:48:42,768 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 19 states have internal predecessors, (53), 6 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 5 states have call predecessors, (9), 6 states have call successors, (9) Word has length 34 [2023-11-26 11:48:42,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:48:42,773 INFO L225 Difference]: With dead ends: 355 [2023-11-26 11:48:42,774 INFO L226 Difference]: Without dead ends: 353 [2023-11-26 11:48:42,775 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=406, Invalid=1400, Unknown=0, NotChecked=0, Total=1806 [2023-11-26 11:48:42,776 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 332 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 510 SdHoareTripleChecker+Invalid, 485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 11:48:42,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [344 Valid, 510 Invalid, 485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 431 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 11:48:42,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2023-11-26 11:48:42,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 176. [2023-11-26 11:48:42,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 145 states have (on average 1.2758620689655173) internal successors, (185), 155 states have internal predecessors, (185), 24 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-11-26 11:48:42,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 233 transitions. [2023-11-26 11:48:42,816 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 233 transitions. Word has length 34 [2023-11-26 11:48:42,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:48:42,816 INFO L495 AbstractCegarLoop]: Abstraction has 176 states and 233 transitions. [2023-11-26 11:48:42,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 19 states have internal predecessors, (53), 6 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 5 states have call predecessors, (9), 6 states have call successors, (9) [2023-11-26 11:48:42,817 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 233 transitions. [2023-11-26 11:48:42,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-26 11:48:42,819 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:48:42,819 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:48:42,834 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3e8e2e-6d12-47d7-99d6-144ddebb68ba/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-26 11:48:43,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3e8e2e-6d12-47d7-99d6-144ddebb68ba/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:48:43,028 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-11-26 11:48:43,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:43,029 INFO L85 PathProgramCache]: Analyzing trace with hash 991077192, now seen corresponding path program 1 times [2023-11-26 11:48:43,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:48:43,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714729925] [2023-11-26 11:48:43,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:43,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:48:43,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:43,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 11:48:43,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:43,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-26 11:48:43,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:43,072 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-26 11:48:43,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:48:43,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714729925] [2023-11-26 11:48:43,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714729925] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:48:43,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:48:43,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:48:43,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588000355] [2023-11-26 11:48:43,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:48:43,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:48:43,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:48:43,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:48:43,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:48:43,075 INFO L87 Difference]: Start difference. First operand 176 states and 233 transitions. Second operand has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-26 11:48:43,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:48:43,131 INFO L93 Difference]: Finished difference Result 176 states and 233 transitions. [2023-11-26 11:48:43,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:48:43,132 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 39 [2023-11-26 11:48:43,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:48:43,135 INFO L225 Difference]: With dead ends: 176 [2023-11-26 11:48:43,135 INFO L226 Difference]: Without dead ends: 175 [2023-11-26 11:48:43,137 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 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 11:48:43,138 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 21 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:48:43,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 61 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:48:43,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2023-11-26 11:48:43,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2023-11-26 11:48:43,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 145 states have (on average 1.2689655172413794) internal successors, (184), 154 states have internal predecessors, (184), 24 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-11-26 11:48:43,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 232 transitions. [2023-11-26 11:48:43,172 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 232 transitions. Word has length 39 [2023-11-26 11:48:43,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:48:43,173 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 232 transitions. [2023-11-26 11:48:43,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-26 11:48:43,174 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 232 transitions. [2023-11-26 11:48:43,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-26 11:48:43,175 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:48:43,175 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:48:43,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-26 11:48:43,176 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-11-26 11:48:43,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:43,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1054038246, now seen corresponding path program 1 times [2023-11-26 11:48:43,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:48:43,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073793550] [2023-11-26 11:48:43,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:43,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:48:43,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:43,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 11:48:43,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:43,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-26 11:48:43,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:43,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-26 11:48:43,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:43,349 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-26 11:48:43,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:48:43,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073793550] [2023-11-26 11:48:43,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073793550] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:48:43,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [912912590] [2023-11-26 11:48:43,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:43,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:48:43,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3e8e2e-6d12-47d7-99d6-144ddebb68ba/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:48:43,351 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3e8e2e-6d12-47d7-99d6-144ddebb68ba/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:48:43,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3e8e2e-6d12-47d7-99d6-144ddebb68ba/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-26 11:48:43,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:43,414 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 11:48:43,416 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:48:43,556 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 11:48:43,556 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:48:43,658 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-26 11:48:43,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [912912590] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:48:43,658 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:48:43,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2023-11-26 11:48:43,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904419818] [2023-11-26 11:48:43,659 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:48:43,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-26 11:48:43,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:48:43,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-26 11:48:43,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2023-11-26 11:48:43,660 INFO L87 Difference]: Start difference. First operand 175 states and 232 transitions. Second operand has 21 states, 21 states have (on average 2.619047619047619) internal successors, (55), 21 states have internal predecessors, (55), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-26 11:48:43,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:48:43,901 INFO L93 Difference]: Finished difference Result 254 states and 330 transitions. [2023-11-26 11:48:43,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-26 11:48:43,902 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.619047619047619) internal successors, (55), 21 states have internal predecessors, (55), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 40 [2023-11-26 11:48:43,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:48:43,904 INFO L225 Difference]: With dead ends: 254 [2023-11-26 11:48:43,904 INFO L226 Difference]: Without dead ends: 179 [2023-11-26 11:48:43,906 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 73 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=480, Unknown=0, NotChecked=0, Total=600 [2023-11-26 11:48:43,906 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 112 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 11:48:43,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 271 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 11:48:43,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2023-11-26 11:48:43,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 175. [2023-11-26 11:48:43,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 145 states have (on average 1.2620689655172415) internal successors, (183), 154 states have internal predecessors, (183), 24 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-11-26 11:48:43,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 231 transitions. [2023-11-26 11:48:43,939 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 231 transitions. Word has length 40 [2023-11-26 11:48:43,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:48:43,939 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 231 transitions. [2023-11-26 11:48:43,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.619047619047619) internal successors, (55), 21 states have internal predecessors, (55), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-26 11:48:43,939 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 231 transitions. [2023-11-26 11:48:43,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-11-26 11:48:43,940 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:48:43,941 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:48:43,950 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3e8e2e-6d12-47d7-99d6-144ddebb68ba/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-26 11:48:44,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3e8e2e-6d12-47d7-99d6-144ddebb68ba/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-26 11:48:44,148 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-11-26 11:48:44,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:44,149 INFO L85 PathProgramCache]: Analyzing trace with hash 2100709149, now seen corresponding path program 1 times [2023-11-26 11:48:44,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:48:44,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301290463] [2023-11-26 11:48:44,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:44,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:48:44,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:44,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 11:48:44,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:44,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-26 11:48:44,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:44,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-26 11:48:44,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:44,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-26 11:48:44,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:44,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-26 11:48:44,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:44,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-26 11:48:44,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:44,281 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-11-26 11:48:44,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:48:44,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301290463] [2023-11-26 11:48:44,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301290463] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:48:44,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [818700525] [2023-11-26 11:48:44,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:44,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:48:44,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3e8e2e-6d12-47d7-99d6-144ddebb68ba/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:48:44,284 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3e8e2e-6d12-47d7-99d6-144ddebb68ba/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:48:44,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3e8e2e-6d12-47d7-99d6-144ddebb68ba/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-26 11:48:44,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:44,342 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 11:48:44,344 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:48:44,399 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-11-26 11:48:44,399 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:48:44,526 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-11-26 11:48:44,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [818700525] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:48:44,526 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:48:44,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2023-11-26 11:48:44,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443368734] [2023-11-26 11:48:44,527 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:48:44,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-26 11:48:44,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:48:44,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-26 11:48:44,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2023-11-26 11:48:44,529 INFO L87 Difference]: Start difference. First operand 175 states and 231 transitions. Second operand has 17 states, 16 states have (on average 2.9375) internal successors, (47), 17 states have internal predecessors, (47), 6 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2023-11-26 11:48:45,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:48:45,026 INFO L93 Difference]: Finished difference Result 305 states and 395 transitions. [2023-11-26 11:48:45,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-26 11:48:45,027 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.9375) internal successors, (47), 17 states have internal predecessors, (47), 6 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) Word has length 51 [2023-11-26 11:48:45,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:48:45,030 INFO L225 Difference]: With dead ends: 305 [2023-11-26 11:48:45,031 INFO L226 Difference]: Without dead ends: 304 [2023-11-26 11:48:45,032 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=259, Invalid=671, Unknown=0, NotChecked=0, Total=930 [2023-11-26 11:48:45,033 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 332 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 11:48:45,033 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [336 Valid, 311 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 11:48:45,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2023-11-26 11:48:45,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 256. [2023-11-26 11:48:45,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 208 states have (on average 1.2884615384615385) internal successors, (268), 223 states have internal predecessors, (268), 42 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2023-11-26 11:48:45,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 352 transitions. [2023-11-26 11:48:45,092 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 352 transitions. Word has length 51 [2023-11-26 11:48:45,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:48:45,093 INFO L495 AbstractCegarLoop]: Abstraction has 256 states and 352 transitions. [2023-11-26 11:48:45,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.9375) internal successors, (47), 17 states have internal predecessors, (47), 6 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2023-11-26 11:48:45,093 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 352 transitions. [2023-11-26 11:48:45,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-26 11:48:45,095 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:48:45,095 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:48:45,108 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3e8e2e-6d12-47d7-99d6-144ddebb68ba/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-26 11:48:45,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3e8e2e-6d12-47d7-99d6-144ddebb68ba/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-26 11:48:45,303 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-11-26 11:48:45,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:45,304 INFO L85 PathProgramCache]: Analyzing trace with hash 285029362, now seen corresponding path program 2 times [2023-11-26 11:48:45,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:48:45,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654914185] [2023-11-26 11:48:45,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:45,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:48:45,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:45,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 11:48:45,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:45,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-26 11:48:45,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:45,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-26 11:48:45,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:45,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-26 11:48:45,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:45,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-26 11:48:45,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:45,400 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2023-11-26 11:48:45,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:48:45,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654914185] [2023-11-26 11:48:45,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654914185] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:48:45,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:48:45,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 11:48:45,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109177869] [2023-11-26 11:48:45,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:48:45,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:48:45,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:48:45,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:48:45,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:48:45,404 INFO L87 Difference]: Start difference. First operand 256 states and 352 transitions. Second operand has 6 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-26 11:48:45,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:48:45,657 INFO L93 Difference]: Finished difference Result 373 states and 506 transitions. [2023-11-26 11:48:45,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-26 11:48:45,658 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 55 [2023-11-26 11:48:45,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:48:45,661 INFO L225 Difference]: With dead ends: 373 [2023-11-26 11:48:45,662 INFO L226 Difference]: Without dead ends: 372 [2023-11-26 11:48:45,662 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2023-11-26 11:48:45,663 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 99 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:48:45,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 129 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:48:45,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2023-11-26 11:48:45,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 256. [2023-11-26 11:48:45,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 208 states have (on average 1.2692307692307692) internal successors, (264), 223 states have internal predecessors, (264), 42 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2023-11-26 11:48:45,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 348 transitions. [2023-11-26 11:48:45,734 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 348 transitions. Word has length 55 [2023-11-26 11:48:45,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:48:45,734 INFO L495 AbstractCegarLoop]: Abstraction has 256 states and 348 transitions. [2023-11-26 11:48:45,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-26 11:48:45,735 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 348 transitions. [2023-11-26 11:48:45,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-26 11:48:45,736 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:48:45,736 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:48:45,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-26 11:48:45,737 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-11-26 11:48:45,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:45,738 INFO L85 PathProgramCache]: Analyzing trace with hash -543893651, now seen corresponding path program 1 times [2023-11-26 11:48:45,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:48:45,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731835658] [2023-11-26 11:48:45,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:45,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:48:45,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:45,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 11:48:45,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:45,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-26 11:48:45,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:45,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-26 11:48:45,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:45,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-26 11:48:46,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:46,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-26 11:48:46,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:46,009 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-26 11:48:46,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:48:46,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731835658] [2023-11-26 11:48:46,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731835658] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:48:46,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [145138439] [2023-11-26 11:48:46,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:46,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:48:46,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3e8e2e-6d12-47d7-99d6-144ddebb68ba/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:48:46,012 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3e8e2e-6d12-47d7-99d6-144ddebb68ba/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:48:46,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3e8e2e-6d12-47d7-99d6-144ddebb68ba/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-26 11:48:46,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:46,079 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-26 11:48:46,084 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:48:46,214 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-26 11:48:46,215 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:48:46,397 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-26 11:48:46,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [145138439] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:48:46,398 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:48:46,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 30 [2023-11-26 11:48:46,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455323285] [2023-11-26 11:48:46,400 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:48:46,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-11-26 11:48:46,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:48:46,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-11-26 11:48:46,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=767, Unknown=0, NotChecked=0, Total=930 [2023-11-26 11:48:46,404 INFO L87 Difference]: Start difference. First operand 256 states and 348 transitions. Second operand has 31 states, 30 states have (on average 2.966666666666667) internal successors, (89), 31 states have internal predecessors, (89), 12 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 11 states have call predecessors, (15), 12 states have call successors, (15) [2023-11-26 11:48:48,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:48:48,239 INFO L93 Difference]: Finished difference Result 829 states and 1154 transitions. [2023-11-26 11:48:48,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2023-11-26 11:48:48,240 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 2.966666666666667) internal successors, (89), 31 states have internal predecessors, (89), 12 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 11 states have call predecessors, (15), 12 states have call successors, (15) Word has length 56 [2023-11-26 11:48:48,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:48:48,247 INFO L225 Difference]: With dead ends: 829 [2023-11-26 11:48:48,248 INFO L226 Difference]: Without dead ends: 828 [2023-11-26 11:48:48,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2701 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1655, Invalid=6177, Unknown=0, NotChecked=0, Total=7832 [2023-11-26 11:48:48,253 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 699 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 473 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 720 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-26 11:48:48,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [720 Valid, 466 Invalid, 573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 473 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-26 11:48:48,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 828 states. [2023-11-26 11:48:48,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 828 to 312. [2023-11-26 11:48:48,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 256 states have (on average 1.25) internal successors, (320), 271 states have internal predecessors, (320), 50 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2023-11-26 11:48:48,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 420 transitions. [2023-11-26 11:48:48,362 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 420 transitions. Word has length 56 [2023-11-26 11:48:48,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:48:48,363 INFO L495 AbstractCegarLoop]: Abstraction has 312 states and 420 transitions. [2023-11-26 11:48:48,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 2.966666666666667) internal successors, (89), 31 states have internal predecessors, (89), 12 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 11 states have call predecessors, (15), 12 states have call successors, (15) [2023-11-26 11:48:48,363 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 420 transitions. [2023-11-26 11:48:48,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-26 11:48:48,365 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:48:48,365 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:48:48,379 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3e8e2e-6d12-47d7-99d6-144ddebb68ba/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-26 11:48:48,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3e8e2e-6d12-47d7-99d6-144ddebb68ba/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:48:48,571 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-11-26 11:48:48,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:48,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1724630169, now seen corresponding path program 1 times [2023-11-26 11:48:48,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:48:48,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198425078] [2023-11-26 11:48:48,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:48,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:48:48,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:48,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 11:48:48,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:48,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-26 11:48:48,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:48,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-26 11:48:48,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:48,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-26 11:48:48,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:48,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-26 11:48:48,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:48,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-26 11:48:48,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:48,640 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2023-11-26 11:48:48,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:48:48,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198425078] [2023-11-26 11:48:48,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198425078] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:48:48,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:48:48,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:48:48,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090503318] [2023-11-26 11:48:48,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:48:48,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:48:48,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:48:48,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:48:48,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:48:48,643 INFO L87 Difference]: Start difference. First operand 312 states and 420 transitions. Second operand has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-26 11:48:48,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:48:48,746 INFO L93 Difference]: Finished difference Result 312 states and 420 transitions. [2023-11-26 11:48:48,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:48:48,747 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 57 [2023-11-26 11:48:48,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:48:48,749 INFO L225 Difference]: With dead ends: 312 [2023-11-26 11:48:48,749 INFO L226 Difference]: Without dead ends: 311 [2023-11-26 11:48:48,750 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:48:48,751 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 44 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:48:48,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 58 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:48:48,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2023-11-26 11:48:48,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 311. [2023-11-26 11:48:48,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 256 states have (on average 1.234375) internal successors, (316), 270 states have internal predecessors, (316), 50 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2023-11-26 11:48:48,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 416 transitions. [2023-11-26 11:48:48,815 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 416 transitions. Word has length 57 [2023-11-26 11:48:48,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:48:48,815 INFO L495 AbstractCegarLoop]: Abstraction has 311 states and 416 transitions. [2023-11-26 11:48:48,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-26 11:48:48,815 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 416 transitions. [2023-11-26 11:48:48,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-26 11:48:48,817 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:48:48,817 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2023-11-26 11:48:48,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-26 11:48:48,817 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-11-26 11:48:48,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:48,818 INFO L85 PathProgramCache]: Analyzing trace with hash -70731642, now seen corresponding path program 2 times [2023-11-26 11:48:48,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:48:48,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95089661] [2023-11-26 11:48:48,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:48,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:48:48,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:48,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 11:48:48,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:48,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-26 11:48:48,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:48,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-26 11:48:48,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:48,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-26 11:48:48,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:48,880 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2023-11-26 11:48:48,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:48:48,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95089661] [2023-11-26 11:48:48,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95089661] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:48:48,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [253212460] [2023-11-26 11:48:48,881 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 11:48:48,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:48:48,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3e8e2e-6d12-47d7-99d6-144ddebb68ba/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:48:48,882 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3e8e2e-6d12-47d7-99d6-144ddebb68ba/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:48:48,890 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3e8e2e-6d12-47d7-99d6-144ddebb68ba/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-26 11:48:48,931 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-26 11:48:48,931 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 11:48:48,931 INFO L262 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 11:48:48,936 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:48:48,998 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2023-11-26 11:48:48,999 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:48:49,074 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2023-11-26 11:48:49,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [253212460] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:48:49,075 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:48:49,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-11-26 11:48:49,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183446691] [2023-11-26 11:48:49,075 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:48:49,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:48:49,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:48:49,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:48:49,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:48:49,079 INFO L87 Difference]: Start difference. First operand 311 states and 416 transitions. Second operand has 6 states, 5 states have (on average 7.6) internal successors, (38), 6 states have internal predecessors, (38), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-26 11:48:49,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:48:49,172 INFO L93 Difference]: Finished difference Result 311 states and 416 transitions. [2023-11-26 11:48:49,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:48:49,173 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.6) internal successors, (38), 6 states have internal predecessors, (38), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 57 [2023-11-26 11:48:49,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:48:49,175 INFO L225 Difference]: With dead ends: 311 [2023-11-26 11:48:49,175 INFO L226 Difference]: Without dead ends: 310 [2023-11-26 11:48:49,176 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 118 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:48:49,177 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 51 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:48:49,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 42 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:48:49,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2023-11-26 11:48:49,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 262. [2023-11-26 11:48:49,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 215 states have (on average 1.2279069767441861) internal successors, (264), 226 states have internal predecessors, (264), 43 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2023-11-26 11:48:49,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 350 transitions. [2023-11-26 11:48:49,236 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 350 transitions. Word has length 57 [2023-11-26 11:48:49,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:48:49,237 INFO L495 AbstractCegarLoop]: Abstraction has 262 states and 350 transitions. [2023-11-26 11:48:49,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.6) internal successors, (38), 6 states have internal predecessors, (38), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-26 11:48:49,237 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 350 transitions. [2023-11-26 11:48:49,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-11-26 11:48:49,239 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:48:49,239 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:48:49,244 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3e8e2e-6d12-47d7-99d6-144ddebb68ba/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-26 11:48:49,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3e8e2e-6d12-47d7-99d6-144ddebb68ba/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-11-26 11:48:49,445 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-11-26 11:48:49,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:49,446 INFO L85 PathProgramCache]: Analyzing trace with hash -114875827, now seen corresponding path program 2 times [2023-11-26 11:48:49,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:48:49,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208036601] [2023-11-26 11:48:49,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:49,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:48:49,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:49,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 11:48:49,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:49,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-26 11:48:49,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:49,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-26 11:48:49,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:49,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-26 11:48:49,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:49,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-26 11:48:49,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:49,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-26 11:48:49,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:49,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-26 11:48:49,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:49,751 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-11-26 11:48:49,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:48:49,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208036601] [2023-11-26 11:48:49,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208036601] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:48:49,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [967860961] [2023-11-26 11:48:49,752 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 11:48:49,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:48:49,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3e8e2e-6d12-47d7-99d6-144ddebb68ba/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:48:49,754 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3e8e2e-6d12-47d7-99d6-144ddebb68ba/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:48:49,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3e8e2e-6d12-47d7-99d6-144ddebb68ba/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-26 11:48:49,815 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-26 11:48:49,815 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 11:48:49,816 INFO L262 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 11:48:49,818 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:48:49,942 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2023-11-26 11:48:49,942 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:48:50,074 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2023-11-26 11:48:50,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [967860961] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:48:50,074 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:48:50,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 6, 6] total 17 [2023-11-26 11:48:50,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849798309] [2023-11-26 11:48:50,075 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:48:50,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-26 11:48:50,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:48:50,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-26 11:48:50,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2023-11-26 11:48:50,077 INFO L87 Difference]: Start difference. First operand 262 states and 350 transitions. Second operand has 18 states, 17 states have (on average 3.0) internal successors, (51), 17 states have internal predecessors, (51), 6 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) [2023-11-26 11:48:51,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:48:51,371 INFO L93 Difference]: Finished difference Result 367 states and 488 transitions. [2023-11-26 11:48:51,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-11-26 11:48:51,374 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.0) internal successors, (51), 17 states have internal predecessors, (51), 6 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) Word has length 64 [2023-11-26 11:48:51,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:48:51,377 INFO L225 Difference]: With dead ends: 367 [2023-11-26 11:48:51,378 INFO L226 Difference]: Without dead ends: 366 [2023-11-26 11:48:51,380 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 133 SyntacticMatches, 4 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 918 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=807, Invalid=2163, Unknown=0, NotChecked=0, Total=2970 [2023-11-26 11:48:51,381 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 392 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 392 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-26 11:48:51,381 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [392 Valid, 187 Invalid, 380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 313 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-26 11:48:51,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2023-11-26 11:48:51,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 153. [2023-11-26 11:48:51,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 123 states have (on average 1.2276422764227641) internal successors, (151), 133 states have internal predecessors, (151), 27 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-11-26 11:48:51,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 205 transitions. [2023-11-26 11:48:51,434 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 205 transitions. Word has length 64 [2023-11-26 11:48:51,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:48:51,435 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 205 transitions. [2023-11-26 11:48:51,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.0) internal successors, (51), 17 states have internal predecessors, (51), 6 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) [2023-11-26 11:48:51,436 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 205 transitions. [2023-11-26 11:48:51,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-11-26 11:48:51,437 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:48:51,437 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:48:51,450 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3e8e2e-6d12-47d7-99d6-144ddebb68ba/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-26 11:48:51,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3e8e2e-6d12-47d7-99d6-144ddebb68ba/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-11-26 11:48:51,644 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-11-26 11:48:51,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:51,645 INFO L85 PathProgramCache]: Analyzing trace with hash 1691420520, now seen corresponding path program 3 times [2023-11-26 11:48:51,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:48:51,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313292757] [2023-11-26 11:48:51,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:51,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:48:51,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:51,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 11:48:51,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:51,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-26 11:48:51,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:51,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-26 11:48:51,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:51,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-26 11:48:51,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:51,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-26 11:48:51,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:51,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-26 11:48:51,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:51,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-26 11:48:51,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:51,781 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2023-11-26 11:48:51,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:48:51,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313292757] [2023-11-26 11:48:51,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313292757] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:48:51,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:48:51,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-26 11:48:51,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494252847] [2023-11-26 11:48:51,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:48:51,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 11:48:51,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:48:51,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 11:48:51,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-26 11:48:51,785 INFO L87 Difference]: Start difference. First operand 153 states and 205 transitions. Second operand has 8 states, 7 states have (on average 4.571428571428571) internal successors, (32), 8 states have internal predecessors, (32), 3 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-26 11:48:52,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:48:52,163 INFO L93 Difference]: Finished difference Result 224 states and 305 transitions. [2023-11-26 11:48:52,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-26 11:48:52,164 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.571428571428571) internal successors, (32), 8 states have internal predecessors, (32), 3 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 70 [2023-11-26 11:48:52,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:48:52,166 INFO L225 Difference]: With dead ends: 224 [2023-11-26 11:48:52,167 INFO L226 Difference]: Without dead ends: 223 [2023-11-26 11:48:52,167 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2023-11-26 11:48:52,168 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 109 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 11:48:52,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 167 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 11:48:52,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2023-11-26 11:48:52,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 122. [2023-11-26 11:48:52,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 99 states have (on average 1.202020202020202) internal successors, (119), 106 states have internal predecessors, (119), 21 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2023-11-26 11:48:52,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 161 transitions. [2023-11-26 11:48:52,214 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 161 transitions. Word has length 70 [2023-11-26 11:48:52,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:48:52,215 INFO L495 AbstractCegarLoop]: Abstraction has 122 states and 161 transitions. [2023-11-26 11:48:52,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.571428571428571) internal successors, (32), 8 states have internal predecessors, (32), 3 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-26 11:48:52,215 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 161 transitions. [2023-11-26 11:48:52,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-11-26 11:48:52,216 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:48:52,216 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:48:52,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-26 11:48:52,217 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-11-26 11:48:52,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:52,218 INFO L85 PathProgramCache]: Analyzing trace with hash -1530912090, now seen corresponding path program 1 times [2023-11-26 11:48:52,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:48:52,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876768419] [2023-11-26 11:48:52,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:52,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:48:52,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:52,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 11:48:52,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:52,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-26 11:48:52,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:52,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-26 11:48:52,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:52,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-26 11:48:52,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:52,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-26 11:48:52,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:52,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-26 11:48:52,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:52,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-26 11:48:52,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:52,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-26 11:48:52,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:52,494 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 19 proven. 30 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-11-26 11:48:52,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:48:52,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876768419] [2023-11-26 11:48:52,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876768419] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:48:52,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487069039] [2023-11-26 11:48:52,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:52,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:48:52,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3e8e2e-6d12-47d7-99d6-144ddebb68ba/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:48:52,497 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3e8e2e-6d12-47d7-99d6-144ddebb68ba/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:48:52,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3e8e2e-6d12-47d7-99d6-144ddebb68ba/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-26 11:48:52,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:52,566 INFO L262 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-26 11:48:52,568 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:48:52,750 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 95 proven. 12 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-11-26 11:48:52,751 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:48:52,905 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 31 proven. 12 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2023-11-26 11:48:52,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [487069039] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:48:52,905 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:48:52,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 11] total 22 [2023-11-26 11:48:52,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388815283] [2023-11-26 11:48:52,906 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:48:52,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-26 11:48:52,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:48:52,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-26 11:48:52,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=392, Unknown=0, NotChecked=0, Total=462 [2023-11-26 11:48:52,908 INFO L87 Difference]: Start difference. First operand 122 states and 161 transitions. Second operand has 22 states, 22 states have (on average 2.8181818181818183) internal successors, (62), 22 states have internal predecessors, (62), 6 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2023-11-26 11:48:53,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:48:53,562 INFO L93 Difference]: Finished difference Result 254 states and 329 transitions. [2023-11-26 11:48:53,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-11-26 11:48:53,563 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.8181818181818183) internal successors, (62), 22 states have internal predecessors, (62), 6 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) Word has length 73 [2023-11-26 11:48:53,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:48:53,565 INFO L225 Difference]: With dead ends: 254 [2023-11-26 11:48:53,565 INFO L226 Difference]: Without dead ends: 188 [2023-11-26 11:48:53,567 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 149 SyntacticMatches, 8 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 504 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=237, Invalid=1245, Unknown=0, NotChecked=0, Total=1482 [2023-11-26 11:48:53,568 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 176 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 473 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 11:48:53,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 231 Invalid, 483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 473 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 11:48:53,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2023-11-26 11:48:53,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 153. [2023-11-26 11:48:53,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 124 states have (on average 1.1935483870967742) internal successors, (148), 133 states have internal predecessors, (148), 27 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-11-26 11:48:53,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 202 transitions. [2023-11-26 11:48:53,642 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 202 transitions. Word has length 73 [2023-11-26 11:48:53,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:48:53,642 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 202 transitions. [2023-11-26 11:48:53,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.8181818181818183) internal successors, (62), 22 states have internal predecessors, (62), 6 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2023-11-26 11:48:53,643 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 202 transitions. [2023-11-26 11:48:53,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-11-26 11:48:53,645 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:48:53,645 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 5, 5, 5, 5, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:48:53,653 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3e8e2e-6d12-47d7-99d6-144ddebb68ba/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-26 11:48:53,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3e8e2e-6d12-47d7-99d6-144ddebb68ba/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-11-26 11:48:53,853 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-11-26 11:48:53,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:53,853 INFO L85 PathProgramCache]: Analyzing trace with hash -2130800434, now seen corresponding path program 2 times [2023-11-26 11:48:53,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:48:53,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659497034] [2023-11-26 11:48:53,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:53,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:48:53,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:54,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 11:48:54,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:54,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-26 11:48:54,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:54,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-26 11:48:54,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:54,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-26 11:48:54,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:54,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-26 11:48:54,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:54,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-26 11:48:54,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:54,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-26 11:48:54,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:54,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-26 11:48:54,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:54,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-26 11:48:54,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:54,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-26 11:48:54,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:54,135 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2023-11-26 11:48:54,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:48:54,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659497034] [2023-11-26 11:48:54,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659497034] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:48:54,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [802290432] [2023-11-26 11:48:54,136 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 11:48:54,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:48:54,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3e8e2e-6d12-47d7-99d6-144ddebb68ba/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:48:54,138 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3e8e2e-6d12-47d7-99d6-144ddebb68ba/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:48:54,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3e8e2e-6d12-47d7-99d6-144ddebb68ba/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-26 11:48:54,198 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-26 11:48:54,198 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 11:48:54,199 INFO L262 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 11:48:54,201 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:48:54,320 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2023-11-26 11:48:54,321 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:48:54,475 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2023-11-26 11:48:54,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [802290432] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:48:54,476 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:48:54,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 14 [2023-11-26 11:48:54,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915166868] [2023-11-26 11:48:54,477 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:48:54,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-26 11:48:54,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:48:54,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-26 11:48:54,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2023-11-26 11:48:54,480 INFO L87 Difference]: Start difference. First operand 153 states and 202 transitions. Second operand has 15 states, 14 states have (on average 4.928571428571429) internal successors, (69), 15 states have internal predecessors, (69), 7 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) [2023-11-26 11:48:55,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:48:55,074 INFO L93 Difference]: Finished difference Result 223 states and 297 transitions. [2023-11-26 11:48:55,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-26 11:48:55,075 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 4.928571428571429) internal successors, (69), 15 states have internal predecessors, (69), 7 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) Word has length 88 [2023-11-26 11:48:55,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:48:55,076 INFO L225 Difference]: With dead ends: 223 [2023-11-26 11:48:55,076 INFO L226 Difference]: Without dead ends: 0 [2023-11-26 11:48:55,078 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=314, Invalid=808, Unknown=0, NotChecked=0, Total=1122 [2023-11-26 11:48:55,079 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 232 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 11:48:55,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [232 Valid, 115 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 11:48:55,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-26 11:48:55,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-26 11:48:55,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:48:55,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-26 11:48:55,081 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 88 [2023-11-26 11:48:55,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:48:55,081 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-26 11:48:55,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 4.928571428571429) internal successors, (69), 15 states have internal predecessors, (69), 7 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) [2023-11-26 11:48:55,082 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-26 11:48:55,082 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-26 11:48:55,085 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 10 remaining) [2023-11-26 11:48:55,086 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 10 remaining) [2023-11-26 11:48:55,086 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 10 remaining) [2023-11-26 11:48:55,087 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 10 remaining) [2023-11-26 11:48:55,087 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 10 remaining) [2023-11-26 11:48:55,087 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 10 remaining) [2023-11-26 11:48:55,088 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 10 remaining) [2023-11-26 11:48:55,088 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 10 remaining) [2023-11-26 11:48:55,089 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 10 remaining) [2023-11-26 11:48:55,089 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 10 remaining) [2023-11-26 11:48:55,102 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3e8e2e-6d12-47d7-99d6-144ddebb68ba/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-26 11:48:55,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3e8e2e-6d12-47d7-99d6-144ddebb68ba/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-26 11:48:55,299 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.