./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/mannadiv_valuebound5.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/mannadiv_valuebound5.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4f0dc25e497896e48962fc4f59a3ea4856b5eb0408b9845e68b04a0b0a132067 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 01:10:56,745 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 01:10:56,819 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-29 01:10:56,826 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 01:10:56,826 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 01:10:56,855 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 01:10:56,856 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 01:10:56,856 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 01:10:56,857 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 01:10:56,858 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 01:10:56,858 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 01:10:56,859 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 01:10:56,860 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 01:10:56,860 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 01:10:56,861 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 01:10:56,862 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 01:10:56,862 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 01:10:56,863 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 01:10:56,863 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 01:10:56,864 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 01:10:56,865 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 01:10:56,866 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 01:10:56,866 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 01:10:56,867 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 01:10:56,867 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-29 01:10:56,868 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 01:10:56,882 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 01:10:56,883 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 01:10:56,884 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 01:10:56,884 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 01:10:56,884 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 01:10:56,885 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 01:10:56,885 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 01:10:56,886 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:10:56,886 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 01:10:56,886 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 01:10:56,886 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 01:10:56,887 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 01:10:56,887 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 01:10:56,887 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 01:10:56,887 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 01:10:56,888 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 01:10:56,888 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 01:10:56,888 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 01:10:56,888 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_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4f0dc25e497896e48962fc4f59a3ea4856b5eb0408b9845e68b04a0b0a132067 [2023-11-29 01:10:57,150 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 01:10:57,174 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 01:10:57,177 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 01:10:57,179 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 01:10:57,179 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 01:10:57,181 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/nla-digbench-scaling/mannadiv_valuebound5.c [2023-11-29 01:11:00,272 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 01:11:00,449 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 01:11:00,450 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/sv-benchmarks/c/nla-digbench-scaling/mannadiv_valuebound5.c [2023-11-29 01:11:00,456 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/data/f19aa230a/c39567e785b545d0a7af2e34f28b1dc1/FLAG90a0b543f [2023-11-29 01:11:00,468 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/data/f19aa230a/c39567e785b545d0a7af2e34f28b1dc1 [2023-11-29 01:11:00,470 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 01:11:00,471 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 01:11:00,472 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 01:11:00,472 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 01:11:00,477 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 01:11:00,478 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:11:00" (1/1) ... [2023-11-29 01:11:00,479 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6dd63d79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:11:00, skipping insertion in model container [2023-11-29 01:11:00,479 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:11:00" (1/1) ... [2023-11-29 01:11:00,500 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 01:11:00,649 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:11:00,656 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 01:11:00,669 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:11:00,682 INFO L206 MainTranslator]: Completed translation [2023-11-29 01:11:00,683 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:11:00 WrapperNode [2023-11-29 01:11:00,683 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 01:11:00,684 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 01:11:00,684 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 01:11:00,684 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 01:11:00,689 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:11:00" (1/1) ... [2023-11-29 01:11:00,694 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:11:00" (1/1) ... [2023-11-29 01:11:00,713 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 69 [2023-11-29 01:11:00,713 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 01:11:00,714 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 01:11:00,714 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 01:11:00,714 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 01:11:00,723 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:11:00" (1/1) ... [2023-11-29 01:11:00,723 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:11:00" (1/1) ... [2023-11-29 01:11:00,724 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:11:00" (1/1) ... [2023-11-29 01:11:00,733 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]. [2023-11-29 01:11:00,733 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:11:00" (1/1) ... [2023-11-29 01:11:00,733 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:11:00" (1/1) ... [2023-11-29 01:11:00,735 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:11:00" (1/1) ... [2023-11-29 01:11:00,738 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:11:00" (1/1) ... [2023-11-29 01:11:00,739 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:11:00" (1/1) ... [2023-11-29 01:11:00,739 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:11:00" (1/1) ... [2023-11-29 01:11:00,741 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 01:11:00,742 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 01:11:00,742 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 01:11:00,742 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 01:11:00,743 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:11:00" (1/1) ... [2023-11-29 01:11:00,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:11:00,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:11:00,768 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 01:11:00,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 01:11:00,794 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 01:11:00,794 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-29 01:11:00,795 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-29 01:11:00,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 01:11:00,795 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 01:11:00,795 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 01:11:00,795 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-29 01:11:00,795 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-29 01:11:00,848 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 01:11:00,850 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 01:11:01,023 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 01:11:01,044 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 01:11:01,044 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 01:11:01,045 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:11:01 BoogieIcfgContainer [2023-11-29 01:11:01,045 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 01:11:01,047 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 01:11:01,048 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 01:11:01,050 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 01:11:01,051 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 01:11:00" (1/3) ... [2023-11-29 01:11:01,051 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e080709 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:11:01, skipping insertion in model container [2023-11-29 01:11:01,051 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:11:00" (2/3) ... [2023-11-29 01:11:01,051 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e080709 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:11:01, skipping insertion in model container [2023-11-29 01:11:01,052 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:11:01" (3/3) ... [2023-11-29 01:11:01,052 INFO L112 eAbstractionObserver]: Analyzing ICFG mannadiv_valuebound5.c [2023-11-29 01:11:01,068 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 01:11:01,068 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2023-11-29 01:11:01,118 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 01:11:01,126 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;@52c598a5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 01:11:01,126 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2023-11-29 01:11:01,130 INFO L276 IsEmpty]: Start isEmpty. Operand has 59 states, 32 states have (on average 1.8125) internal successors, (58), 52 states have internal predecessors, (58), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-29 01:11:01,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-29 01:11:01,137 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:11:01,138 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:11:01,138 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 01:11:01,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:11:01,143 INFO L85 PathProgramCache]: Analyzing trace with hash -1455350132, now seen corresponding path program 1 times [2023-11-29 01:11:01,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:11:01,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151704629] [2023-11-29 01:11:01,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:11:01,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:11:01,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:11:01,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:11:01,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151704629] [2023-11-29 01:11:01,280 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-29 01:11:01,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1363533152] [2023-11-29 01:11:01,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:11:01,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:11:01,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:11:01,285 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:11:01,288 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 01:11:01,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:11:01,349 INFO L262 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-29 01:11:01,354 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:11:01,375 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 01:11:01,375 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:11:01,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1363533152] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:11:01,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:11:01,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:11:01,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033386716] [2023-11-29 01:11:01,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:11:01,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 01:11:01,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:11:01,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 01:11:01,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 01:11:01,434 INFO L87 Difference]: Start difference. First operand has 59 states, 32 states have (on average 1.8125) internal successors, (58), 52 states have internal predecessors, (58), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2023-11-29 01:11:01,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:11:01,477 INFO L93 Difference]: Finished difference Result 116 states and 133 transitions. [2023-11-29 01:11:01,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 01:11:01,481 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 14 [2023-11-29 01:11:01,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:11:01,491 INFO L225 Difference]: With dead ends: 116 [2023-11-29 01:11:01,492 INFO L226 Difference]: Without dead ends: 56 [2023-11-29 01:11:01,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 01:11:01,501 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:11:01,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 60 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:11:01,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2023-11-29 01:11:01,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2023-11-29 01:11:01,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 31 states have (on average 1.6774193548387097) internal successors, (52), 50 states have internal predecessors, (52), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 01:11:01,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 58 transitions. [2023-11-29 01:11:01,550 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 58 transitions. Word has length 14 [2023-11-29 01:11:01,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:11:01,552 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 58 transitions. [2023-11-29 01:11:01,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2023-11-29 01:11:01,553 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 58 transitions. [2023-11-29 01:11:01,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-29 01:11:01,554 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:11:01,555 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:11:01,565 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 01:11:01,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:11:01,761 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 01:11:01,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:11:01,762 INFO L85 PathProgramCache]: Analyzing trace with hash -1455350117, now seen corresponding path program 1 times [2023-11-29 01:11:01,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:11:01,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96240686] [2023-11-29 01:11:01,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:11:01,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:11:01,783 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:11:01,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [717926153] [2023-11-29 01:11:01,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:11:01,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:11:01,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:11:01,786 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:11:01,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 01:11:01,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:11:01,850 INFO L262 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 01:11:01,852 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:11:02,016 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 01:11:02,016 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:11:02,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:11:02,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96240686] [2023-11-29 01:11:02,017 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:11:02,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [717926153] [2023-11-29 01:11:02,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [717926153] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:11:02,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:11:02,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 01:11:02,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664226821] [2023-11-29 01:11:02,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:11:02,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 01:11:02,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:11:02,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 01:11:02,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:11:02,021 INFO L87 Difference]: Start difference. First operand 56 states and 58 transitions. Second operand has 7 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 01:11:02,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:11:02,210 INFO L93 Difference]: Finished difference Result 96 states and 100 transitions. [2023-11-29 01:11:02,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 01:11:02,211 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 14 [2023-11-29 01:11:02,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:11:02,213 INFO L225 Difference]: With dead ends: 96 [2023-11-29 01:11:02,213 INFO L226 Difference]: Without dead ends: 90 [2023-11-29 01:11:02,214 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-29 01:11:02,215 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 124 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:11:02,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 120 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:11:02,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2023-11-29 01:11:02,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 76. [2023-11-29 01:11:02,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 50 states have (on average 1.66) internal successors, (83), 69 states have internal predecessors, (83), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-29 01:11:02,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 91 transitions. [2023-11-29 01:11:02,232 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 91 transitions. Word has length 14 [2023-11-29 01:11:02,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:11:02,232 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 91 transitions. [2023-11-29 01:11:02,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 01:11:02,233 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 91 transitions. [2023-11-29 01:11:02,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-29 01:11:02,233 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:11:02,234 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:11:02,240 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 01:11:02,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:11:02,435 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 01:11:02,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:11:02,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1567877597, now seen corresponding path program 1 times [2023-11-29 01:11:02,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:11:02,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434581239] [2023-11-29 01:11:02,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:11:02,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:11:02,454 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:11:02,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [972543130] [2023-11-29 01:11:02,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:11:02,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:11:02,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:11:02,456 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:11:02,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 01:11:02,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:11:02,503 INFO L262 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 01:11:02,505 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:11:02,544 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 01:11:02,544 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:11:02,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:11:02,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434581239] [2023-11-29 01:11:02,545 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:11:02,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [972543130] [2023-11-29 01:11:02,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [972543130] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:11:02,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:11:02,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:11:02,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791609381] [2023-11-29 01:11:02,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:11:02,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:11:02,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:11:02,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:11:02,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:11:02,548 INFO L87 Difference]: Start difference. First operand 76 states and 91 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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) [2023-11-29 01:11:02,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:11:02,614 INFO L93 Difference]: Finished difference Result 79 states and 94 transitions. [2023-11-29 01:11:02,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:11:02,615 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), 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 16 [2023-11-29 01:11:02,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:11:02,616 INFO L225 Difference]: With dead ends: 79 [2023-11-29 01:11:02,617 INFO L226 Difference]: Without dead ends: 73 [2023-11-29 01:11:02,617 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:11:02,619 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 35 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:11:02,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 52 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:11:02,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2023-11-29 01:11:02,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2023-11-29 01:11:02,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 52 states have (on average 1.4807692307692308) internal successors, (77), 66 states have internal predecessors, (77), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-29 01:11:02,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 85 transitions. [2023-11-29 01:11:02,635 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 85 transitions. Word has length 16 [2023-11-29 01:11:02,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:11:02,635 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 85 transitions. [2023-11-29 01:11:02,636 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), 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) [2023-11-29 01:11:02,636 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 85 transitions. [2023-11-29 01:11:02,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-29 01:11:02,637 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:11:02,637 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:11:02,642 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 01:11:02,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:11:02,841 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 01:11:02,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:11:02,841 INFO L85 PathProgramCache]: Analyzing trace with hash 1359565303, now seen corresponding path program 1 times [2023-11-29 01:11:02,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:11:02,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952513783] [2023-11-29 01:11:02,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:11:02,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:11:02,856 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:11:02,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1947941394] [2023-11-29 01:11:02,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:11:02,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:11:02,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:11:02,859 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:11:02,860 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 01:11:02,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:11:02,909 INFO L262 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 01:11:02,911 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:11:02,944 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 01:11:02,945 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:11:02,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:11:02,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952513783] [2023-11-29 01:11:02,945 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:11:02,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1947941394] [2023-11-29 01:11:02,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1947941394] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:11:02,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:11:02,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:11:02,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31124992] [2023-11-29 01:11:02,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:11:02,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:11:02,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:11:02,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:11:02,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:11:02,948 INFO L87 Difference]: Start difference. First operand 73 states and 85 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 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) [2023-11-29 01:11:03,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:11:03,026 INFO L93 Difference]: Finished difference Result 119 states and 141 transitions. [2023-11-29 01:11:03,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:11:03,027 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 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 17 [2023-11-29 01:11:03,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:11:03,029 INFO L225 Difference]: With dead ends: 119 [2023-11-29 01:11:03,029 INFO L226 Difference]: Without dead ends: 108 [2023-11-29 01:11:03,030 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:11:03,031 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 44 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:11:03,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 64 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:11:03,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2023-11-29 01:11:03,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 99. [2023-11-29 01:11:03,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 76 states have (on average 1.4210526315789473) internal successors, (108), 90 states have internal predecessors, (108), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-29 01:11:03,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 120 transitions. [2023-11-29 01:11:03,048 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 120 transitions. Word has length 17 [2023-11-29 01:11:03,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:11:03,048 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 120 transitions. [2023-11-29 01:11:03,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 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) [2023-11-29 01:11:03,049 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 120 transitions. [2023-11-29 01:11:03,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-29 01:11:03,049 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:11:03,050 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:11:03,054 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 01:11:03,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:11:03,251 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 01:11:03,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:11:03,251 INFO L85 PathProgramCache]: Analyzing trace with hash -803148513, now seen corresponding path program 1 times [2023-11-29 01:11:03,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:11:03,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979548130] [2023-11-29 01:11:03,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:11:03,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:11:03,262 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:11:03,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1354950906] [2023-11-29 01:11:03,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:11:03,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:11:03,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:11:03,263 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:11:03,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 01:11:03,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:11:03,297 INFO L262 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 01:11:03,299 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:11:03,383 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 01:11:03,383 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:11:03,562 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 01:11:03,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:11:03,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979548130] [2023-11-29 01:11:03,562 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:11:03,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1354950906] [2023-11-29 01:11:03,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1354950906] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:11:03,563 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:11:03,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2023-11-29 01:11:03,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344507813] [2023-11-29 01:11:03,563 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:11:03,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 01:11:03,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:11:03,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 01:11:03,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-11-29 01:11:03,565 INFO L87 Difference]: Start difference. First operand 99 states and 120 transitions. Second operand has 10 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 01:11:03,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:11:03,829 INFO L93 Difference]: Finished difference Result 111 states and 130 transitions. [2023-11-29 01:11:03,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 01:11:03,832 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2023-11-29 01:11:03,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:11:03,833 INFO L225 Difference]: With dead ends: 111 [2023-11-29 01:11:03,833 INFO L226 Difference]: Without dead ends: 108 [2023-11-29 01:11:03,834 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2023-11-29 01:11:03,835 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 102 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:11:03,835 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 89 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 01:11:03,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2023-11-29 01:11:03,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 103. [2023-11-29 01:11:03,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 80 states have (on average 1.3875) internal successors, (111), 94 states have internal predecessors, (111), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-29 01:11:03,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 123 transitions. [2023-11-29 01:11:03,849 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 123 transitions. Word has length 18 [2023-11-29 01:11:03,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:11:03,849 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 123 transitions. [2023-11-29 01:11:03,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 01:11:03,850 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 123 transitions. [2023-11-29 01:11:03,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-29 01:11:03,850 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:11:03,851 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:11:03,855 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 01:11:04,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:11:04,056 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 01:11:04,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:11:04,056 INFO L85 PathProgramCache]: Analyzing trace with hash 872199929, now seen corresponding path program 1 times [2023-11-29 01:11:04,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:11:04,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140859182] [2023-11-29 01:11:04,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:11:04,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:11:04,069 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:11:04,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [777868993] [2023-11-29 01:11:04,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:11:04,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:11:04,070 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:11:04,071 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:11:04,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 01:11:04,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:11:04,120 INFO L262 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 01:11:04,122 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:11:04,338 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 01:11:04,338 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:11:04,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:11:04,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140859182] [2023-11-29 01:11:04,339 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:11:04,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [777868993] [2023-11-29 01:11:04,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [777868993] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:11:04,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:11:04,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 01:11:04,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434991323] [2023-11-29 01:11:04,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:11:04,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 01:11:04,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:11:04,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 01:11:04,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:11:04,341 INFO L87 Difference]: Start difference. First operand 103 states and 123 transitions. Second operand has 7 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 01:11:04,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:11:04,506 INFO L93 Difference]: Finished difference Result 104 states and 123 transitions. [2023-11-29 01:11:04,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 01:11:04,507 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2023-11-29 01:11:04,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:11:04,508 INFO L225 Difference]: With dead ends: 104 [2023-11-29 01:11:04,508 INFO L226 Difference]: Without dead ends: 103 [2023-11-29 01:11:04,508 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-29 01:11:04,509 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 66 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:11:04,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 86 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:11:04,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2023-11-29 01:11:04,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2023-11-29 01:11:04,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 80 states have (on average 1.375) internal successors, (110), 94 states have internal predecessors, (110), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-29 01:11:04,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 122 transitions. [2023-11-29 01:11:04,522 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 122 transitions. Word has length 19 [2023-11-29 01:11:04,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:11:04,523 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 122 transitions. [2023-11-29 01:11:04,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 01:11:04,523 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 122 transitions. [2023-11-29 01:11:04,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-11-29 01:11:04,524 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:11:04,524 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:11:04,532 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 01:11:04,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-29 01:11:04,733 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 01:11:04,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:11:04,733 INFO L85 PathProgramCache]: Analyzing trace with hash -2088001174, now seen corresponding path program 1 times [2023-11-29 01:11:04,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:11:04,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54379622] [2023-11-29 01:11:04,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:11:04,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:11:04,743 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:11:04,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [234278733] [2023-11-29 01:11:04,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:11:04,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:11:04,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:11:04,744 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:11:04,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 01:11:04,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:11:04,786 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 01:11:04,787 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:11:04,820 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 01:11:04,820 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:11:04,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:11:04,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54379622] [2023-11-29 01:11:04,820 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:11:04,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [234278733] [2023-11-29 01:11:04,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [234278733] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:11:04,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:11:04,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:11:04,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967398247] [2023-11-29 01:11:04,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:11:04,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:11:04,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:11:04,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:11:04,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:11:04,822 INFO L87 Difference]: Start difference. First operand 103 states and 122 transitions. Second operand has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 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) [2023-11-29 01:11:04,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:11:04,853 INFO L93 Difference]: Finished difference Result 103 states and 122 transitions. [2023-11-29 01:11:04,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:11:04,853 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), 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 32 [2023-11-29 01:11:04,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:11:04,854 INFO L225 Difference]: With dead ends: 103 [2023-11-29 01:11:04,854 INFO L226 Difference]: Without dead ends: 101 [2023-11-29 01:11:04,855 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:11:04,856 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 59 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:11:04,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 57 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:11:04,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2023-11-29 01:11:04,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2023-11-29 01:11:04,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 80 states have (on average 1.3375) internal successors, (107), 92 states have internal predecessors, (107), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-29 01:11:04,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 119 transitions. [2023-11-29 01:11:04,867 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 119 transitions. Word has length 32 [2023-11-29 01:11:04,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:11:04,868 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 119 transitions. [2023-11-29 01:11:04,868 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), 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) [2023-11-29 01:11:04,868 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 119 transitions. [2023-11-29 01:11:04,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-29 01:11:04,869 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:11:04,869 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:11:04,874 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 01:11:05,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:11:05,072 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 01:11:05,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:11:05,073 INFO L85 PathProgramCache]: Analyzing trace with hash -1400336030, now seen corresponding path program 1 times [2023-11-29 01:11:05,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:11:05,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908065631] [2023-11-29 01:11:05,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:11:05,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:11:05,082 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:11:05,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [120995105] [2023-11-29 01:11:05,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:11:05,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:11:05,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:11:05,083 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:11:05,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 01:11:05,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:11:05,122 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 01:11:05,123 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:11:05,266 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 01:11:05,267 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:11:05,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:11:05,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908065631] [2023-11-29 01:11:05,421 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:11:05,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [120995105] [2023-11-29 01:11:05,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [120995105] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:11:05,422 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:11:05,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2023-11-29 01:11:05,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867759094] [2023-11-29 01:11:05,422 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 01:11:05,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 01:11:05,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:11:05,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 01:11:05,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-11-29 01:11:05,424 INFO L87 Difference]: Start difference. First operand 101 states and 119 transitions. Second operand has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 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) [2023-11-29 01:11:05,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:11:05,541 INFO L93 Difference]: Finished difference Result 110 states and 121 transitions. [2023-11-29 01:11:05,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 01:11:05,542 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 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 34 [2023-11-29 01:11:05,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:11:05,543 INFO L225 Difference]: With dead ends: 110 [2023-11-29 01:11:05,543 INFO L226 Difference]: Without dead ends: 108 [2023-11-29 01:11:05,544 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-11-29 01:11:05,545 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 84 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:11:05,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 65 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:11:05,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2023-11-29 01:11:05,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 99. [2023-11-29 01:11:05,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 80 states have (on average 1.3125) internal successors, (105), 90 states have internal predecessors, (105), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-29 01:11:05,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 117 transitions. [2023-11-29 01:11:05,558 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 117 transitions. Word has length 34 [2023-11-29 01:11:05,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:11:05,558 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 117 transitions. [2023-11-29 01:11:05,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 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) [2023-11-29 01:11:05,559 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 117 transitions. [2023-11-29 01:11:05,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-11-29 01:11:05,560 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:11:05,560 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, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:11:05,565 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 01:11:05,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:11:05,765 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 01:11:05,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:11:05,765 INFO L85 PathProgramCache]: Analyzing trace with hash -460743922, now seen corresponding path program 1 times [2023-11-29 01:11:05,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:11:05,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165824695] [2023-11-29 01:11:05,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:11:05,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:11:05,776 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:11:05,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1136173618] [2023-11-29 01:11:05,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:11:05,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:11:05,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:11:05,778 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:11:05,778 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 01:11:05,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:11:05,827 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 01:11:05,829 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:11:05,964 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 01:11:05,964 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:11:06,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:11:06,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165824695] [2023-11-29 01:11:06,087 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:11:06,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1136173618] [2023-11-29 01:11:06,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1136173618] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:11:06,088 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:11:06,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2023-11-29 01:11:06,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725770451] [2023-11-29 01:11:06,088 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 01:11:06,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 01:11:06,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:11:06,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 01:11:06,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-11-29 01:11:06,090 INFO L87 Difference]: Start difference. First operand 99 states and 117 transitions. Second operand has 6 states, 5 states have (on average 5.2) internal successors, (26), 6 states have internal predecessors, (26), 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) [2023-11-29 01:11:06,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:11:06,202 INFO L93 Difference]: Finished difference Result 157 states and 175 transitions. [2023-11-29 01:11:06,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 01:11:06,202 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.2) internal successors, (26), 6 states have internal predecessors, (26), 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 35 [2023-11-29 01:11:06,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:11:06,204 INFO L225 Difference]: With dead ends: 157 [2023-11-29 01:11:06,204 INFO L226 Difference]: Without dead ends: 154 [2023-11-29 01:11:06,204 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2023-11-29 01:11:06,205 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 122 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:11:06,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 82 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:11:06,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2023-11-29 01:11:06,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 133. [2023-11-29 01:11:06,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 112 states have (on average 1.3303571428571428) internal successors, (149), 122 states have internal predecessors, (149), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-29 01:11:06,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 165 transitions. [2023-11-29 01:11:06,216 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 165 transitions. Word has length 35 [2023-11-29 01:11:06,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:11:06,217 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 165 transitions. [2023-11-29 01:11:06,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.2) internal successors, (26), 6 states have internal predecessors, (26), 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) [2023-11-29 01:11:06,217 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 165 transitions. [2023-11-29 01:11:06,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-11-29 01:11:06,218 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:11:06,218 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:11:06,223 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 01:11:06,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:11:06,423 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 01:11:06,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:11:06,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1861508742, now seen corresponding path program 1 times [2023-11-29 01:11:06,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:11:06,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744650604] [2023-11-29 01:11:06,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:11:06,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:11:06,433 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:11:06,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1079868111] [2023-11-29 01:11:06,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:11:06,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:11:06,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:11:06,435 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:11:06,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 01:11:06,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:11:06,478 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 01:11:06,480 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:11:06,583 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 01:11:06,584 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:11:06,713 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 01:11:06,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:11:06,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744650604] [2023-11-29 01:11:06,714 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:11:06,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1079868111] [2023-11-29 01:11:06,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1079868111] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:11:06,714 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:11:06,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2023-11-29 01:11:06,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385921129] [2023-11-29 01:11:06,715 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:11:06,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 01:11:06,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:11:06,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 01:11:06,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-11-29 01:11:06,716 INFO L87 Difference]: Start difference. First operand 133 states and 165 transitions. Second operand has 11 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-29 01:11:06,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:11:06,996 INFO L93 Difference]: Finished difference Result 141 states and 173 transitions. [2023-11-29 01:11:06,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 01:11:06,996 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 37 [2023-11-29 01:11:06,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:11:06,998 INFO L225 Difference]: With dead ends: 141 [2023-11-29 01:11:06,998 INFO L226 Difference]: Without dead ends: 135 [2023-11-29 01:11:06,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 60 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2023-11-29 01:11:06,999 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 112 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:11:06,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 93 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 01:11:07,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2023-11-29 01:11:07,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 134. [2023-11-29 01:11:07,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 114 states have (on average 1.2982456140350878) internal successors, (148), 123 states have internal predecessors, (148), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-29 01:11:07,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 164 transitions. [2023-11-29 01:11:07,011 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 164 transitions. Word has length 37 [2023-11-29 01:11:07,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:11:07,012 INFO L495 AbstractCegarLoop]: Abstraction has 134 states and 164 transitions. [2023-11-29 01:11:07,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-29 01:11:07,012 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 164 transitions. [2023-11-29 01:11:07,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-11-29 01:11:07,013 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:11:07,013 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:11:07,018 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-29 01:11:07,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-29 01:11:07,215 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 01:11:07,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:11:07,216 INFO L85 PathProgramCache]: Analyzing trace with hash 1872196208, now seen corresponding path program 1 times [2023-11-29 01:11:07,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:11:07,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599139944] [2023-11-29 01:11:07,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:11:07,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:11:07,226 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:11:07,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [604742975] [2023-11-29 01:11:07,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:11:07,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:11:07,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:11:07,228 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:11:07,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 01:11:07,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:11:07,284 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 01:11:07,285 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:11:07,335 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 01:11:07,335 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:11:07,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:11:07,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599139944] [2023-11-29 01:11:07,335 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:11:07,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [604742975] [2023-11-29 01:11:07,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [604742975] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:11:07,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:11:07,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:11:07,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076747975] [2023-11-29 01:11:07,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:11:07,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:11:07,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:11:07,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:11:07,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:11:07,338 INFO L87 Difference]: Start difference. First operand 134 states and 164 transitions. Second operand has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (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) [2023-11-29 01:11:07,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:11:07,411 INFO L93 Difference]: Finished difference Result 136 states and 164 transitions. [2023-11-29 01:11:07,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:11:07,411 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (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 38 [2023-11-29 01:11:07,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:11:07,413 INFO L225 Difference]: With dead ends: 136 [2023-11-29 01:11:07,413 INFO L226 Difference]: Without dead ends: 135 [2023-11-29 01:11:07,414 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:11:07,414 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 13 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:11:07,415 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 38 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:11:07,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2023-11-29 01:11:07,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 134. [2023-11-29 01:11:07,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 114 states have (on average 1.2719298245614035) internal successors, (145), 123 states have internal predecessors, (145), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-29 01:11:07,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 161 transitions. [2023-11-29 01:11:07,425 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 161 transitions. Word has length 38 [2023-11-29 01:11:07,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:11:07,425 INFO L495 AbstractCegarLoop]: Abstraction has 134 states and 161 transitions. [2023-11-29 01:11:07,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (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) [2023-11-29 01:11:07,426 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 161 transitions. [2023-11-29 01:11:07,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-11-29 01:11:07,426 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:11:07,427 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:11:07,432 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 01:11:07,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:11:07,628 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 01:11:07,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:11:07,629 INFO L85 PathProgramCache]: Analyzing trace with hash 693347430, now seen corresponding path program 1 times [2023-11-29 01:11:07,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:11:07,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193936327] [2023-11-29 01:11:07,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:11:07,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:11:07,637 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:11:07,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1760456112] [2023-11-29 01:11:07,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:11:07,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:11:07,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:11:07,639 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:11:07,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 01:11:07,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:11:07,685 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 01:11:07,686 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:11:07,807 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 01:11:07,807 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:11:08,016 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 01:11:08,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:11:08,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193936327] [2023-11-29 01:11:08,017 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:11:08,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1760456112] [2023-11-29 01:11:08,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1760456112] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:11:08,017 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:11:08,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2023-11-29 01:11:08,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789900304] [2023-11-29 01:11:08,017 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:11:08,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 01:11:08,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:11:08,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 01:11:08,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2023-11-29 01:11:08,019 INFO L87 Difference]: Start difference. First operand 134 states and 161 transitions. Second operand has 14 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 13 states have internal predecessors, (43), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 01:11:08,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:11:08,227 INFO L93 Difference]: Finished difference Result 134 states and 161 transitions. [2023-11-29 01:11:08,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 01:11:08,228 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 13 states have internal predecessors, (43), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 38 [2023-11-29 01:11:08,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:11:08,230 INFO L225 Difference]: With dead ends: 134 [2023-11-29 01:11:08,230 INFO L226 Difference]: Without dead ends: 131 [2023-11-29 01:11:08,230 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 59 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2023-11-29 01:11:08,231 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 77 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:11:08,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 59 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:11:08,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2023-11-29 01:11:08,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 128. [2023-11-29 01:11:08,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 111 states have (on average 1.2162162162162162) internal successors, (135), 117 states have internal predecessors, (135), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-29 01:11:08,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 151 transitions. [2023-11-29 01:11:08,242 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 151 transitions. Word has length 38 [2023-11-29 01:11:08,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:11:08,242 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 151 transitions. [2023-11-29 01:11:08,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 13 states have internal predecessors, (43), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 01:11:08,242 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 151 transitions. [2023-11-29 01:11:08,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-29 01:11:08,243 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:11:08,244 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:11:08,250 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-29 01:11:08,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-29 01:11:08,449 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 01:11:08,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:11:08,449 INFO L85 PathProgramCache]: Analyzing trace with hash -2091459640, now seen corresponding path program 1 times [2023-11-29 01:11:08,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:11:08,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888457185] [2023-11-29 01:11:08,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:11:08,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:11:08,463 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:11:08,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1080141444] [2023-11-29 01:11:08,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:11:08,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:11:08,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:11:08,465 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:11:08,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 01:11:08,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:11:08,516 INFO L262 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 01:11:08,518 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:11:08,566 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 01:11:08,566 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:11:08,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:11:08,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888457185] [2023-11-29 01:11:08,566 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:11:08,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1080141444] [2023-11-29 01:11:08,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1080141444] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:11:08,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:11:08,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:11:08,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506081264] [2023-11-29 01:11:08,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:11:08,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:11:08,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:11:08,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:11:08,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:11:08,569 INFO L87 Difference]: Start difference. First operand 128 states and 151 transitions. Second operand has 4 states, 3 states have (on average 10.0) internal successors, (30), 4 states have internal predecessors, (30), 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) [2023-11-29 01:11:08,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:11:08,638 INFO L93 Difference]: Finished difference Result 130 states and 151 transitions. [2023-11-29 01:11:08,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:11:08,638 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.0) internal successors, (30), 4 states have internal predecessors, (30), 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 39 [2023-11-29 01:11:08,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:11:08,640 INFO L225 Difference]: With dead ends: 130 [2023-11-29 01:11:08,640 INFO L226 Difference]: Without dead ends: 129 [2023-11-29 01:11:08,641 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:11:08,642 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 10 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:11:08,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 49 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:11:08,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2023-11-29 01:11:08,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 128. [2023-11-29 01:11:08,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 111 states have (on average 1.1891891891891893) internal successors, (132), 117 states have internal predecessors, (132), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-29 01:11:08,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 148 transitions. [2023-11-29 01:11:08,657 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 148 transitions. Word has length 39 [2023-11-29 01:11:08,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:11:08,658 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 148 transitions. [2023-11-29 01:11:08,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.0) internal successors, (30), 4 states have internal predecessors, (30), 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) [2023-11-29 01:11:08,658 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 148 transitions. [2023-11-29 01:11:08,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-29 01:11:08,659 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:11:08,659 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:11:08,665 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-29 01:11:08,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-29 01:11:08,865 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 01:11:08,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:11:08,866 INFO L85 PathProgramCache]: Analyzing trace with hash 18933906, now seen corresponding path program 1 times [2023-11-29 01:11:08,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:11:08,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597352349] [2023-11-29 01:11:08,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:11:08,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:11:08,876 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:11:08,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1468477998] [2023-11-29 01:11:08,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:11:08,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:11:08,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:11:08,878 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:11:08,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 01:11:08,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:11:08,936 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 01:11:08,938 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:11:09,164 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 01:11:09,165 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:11:09,292 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 01:11:09,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:11:09,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597352349] [2023-11-29 01:11:09,293 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:11:09,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1468477998] [2023-11-29 01:11:09,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1468477998] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:11:09,293 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:11:09,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-11-29 01:11:09,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924565728] [2023-11-29 01:11:09,294 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:11:09,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 01:11:09,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:11:09,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 01:11:09,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-11-29 01:11:09,295 INFO L87 Difference]: Start difference. First operand 128 states and 148 transitions. Second operand has 11 states, 10 states have (on average 5.3) internal successors, (53), 11 states have internal predecessors, (53), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-29 01:11:10,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:11:10,049 INFO L93 Difference]: Finished difference Result 167 states and 192 transitions. [2023-11-29 01:11:10,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 01:11:10,050 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 5.3) internal successors, (53), 11 states have internal predecessors, (53), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 39 [2023-11-29 01:11:10,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:11:10,051 INFO L225 Difference]: With dead ends: 167 [2023-11-29 01:11:10,051 INFO L226 Difference]: Without dead ends: 166 [2023-11-29 01:11:10,052 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 66 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=111, Invalid=269, Unknown=0, NotChecked=0, Total=380 [2023-11-29 01:11:10,052 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 136 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 01:11:10,053 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 72 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 01:11:10,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2023-11-29 01:11:10,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 127. [2023-11-29 01:11:10,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 111 states have (on average 1.1711711711711712) internal successors, (130), 116 states have internal predecessors, (130), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-29 01:11:10,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 146 transitions. [2023-11-29 01:11:10,066 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 146 transitions. Word has length 39 [2023-11-29 01:11:10,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:11:10,066 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 146 transitions. [2023-11-29 01:11:10,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 5.3) internal successors, (53), 11 states have internal predecessors, (53), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-29 01:11:10,066 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 146 transitions. [2023-11-29 01:11:10,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-11-29 01:11:10,067 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:11:10,067 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:11:10,077 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-29 01:11:10,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-29 01:11:10,277 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 01:11:10,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:11:10,278 INFO L85 PathProgramCache]: Analyzing trace with hash -1223098600, now seen corresponding path program 1 times [2023-11-29 01:11:10,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:11:10,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046081935] [2023-11-29 01:11:10,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:11:10,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:11:10,283 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:11:10,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1276654255] [2023-11-29 01:11:10,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:11:10,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:11:10,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:11:10,285 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:11:10,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-29 01:11:10,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:11:10,325 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 01:11:10,326 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:11:10,360 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-29 01:11:10,360 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:11:10,404 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-29 01:11:10,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:11:10,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046081935] [2023-11-29 01:11:10,404 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:11:10,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1276654255] [2023-11-29 01:11:10,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1276654255] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:11:10,405 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:11:10,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-11-29 01:11:10,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125245277] [2023-11-29 01:11:10,405 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:11:10,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 01:11:10,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:11:10,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 01:11:10,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:11:10,406 INFO L87 Difference]: Start difference. First operand 127 states and 146 transitions. Second operand has 6 states, 5 states have (on average 11.8) internal successors, (59), 6 states have internal predecessors, (59), 5 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-29 01:11:10,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:11:10,485 INFO L93 Difference]: Finished difference Result 293 states and 345 transitions. [2023-11-29 01:11:10,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 01:11:10,486 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 11.8) internal successors, (59), 6 states have internal predecessors, (59), 5 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 47 [2023-11-29 01:11:10,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:11:10,488 INFO L225 Difference]: With dead ends: 293 [2023-11-29 01:11:10,488 INFO L226 Difference]: Without dead ends: 291 [2023-11-29 01:11:10,488 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:11:10,489 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 68 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:11:10,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 87 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:11:10,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2023-11-29 01:11:10,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 254. [2023-11-29 01:11:10,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 230 states have (on average 1.1565217391304348) internal successors, (266), 234 states have internal predecessors, (266), 17 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-29 01:11:10,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 300 transitions. [2023-11-29 01:11:10,516 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 300 transitions. Word has length 47 [2023-11-29 01:11:10,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:11:10,516 INFO L495 AbstractCegarLoop]: Abstraction has 254 states and 300 transitions. [2023-11-29 01:11:10,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 11.8) internal successors, (59), 6 states have internal predecessors, (59), 5 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-29 01:11:10,516 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 300 transitions. [2023-11-29 01:11:10,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-29 01:11:10,517 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:11:10,517 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:11:10,523 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-29 01:11:10,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-29 01:11:10,718 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 01:11:10,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:11:10,718 INFO L85 PathProgramCache]: Analyzing trace with hash -1565427033, now seen corresponding path program 2 times [2023-11-29 01:11:10,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:11:10,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248243641] [2023-11-29 01:11:10,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:11:10,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:11:10,726 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:11:10,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1110173616] [2023-11-29 01:11:10,727 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:11:10,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:11:10,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:11:10,728 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:11:10,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-29 01:11:10,777 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 01:11:10,777 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:11:10,778 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 01:11:10,779 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:11:10,895 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-29 01:11:10,895 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:11:11,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:11:11,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248243641] [2023-11-29 01:11:11,028 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:11:11,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1110173616] [2023-11-29 01:11:11,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1110173616] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:11:11,028 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:11:11,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2023-11-29 01:11:11,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899061921] [2023-11-29 01:11:11,029 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 01:11:11,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 01:11:11,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:11:11,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 01:11:11,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-29 01:11:11,030 INFO L87 Difference]: Start difference. First operand 254 states and 300 transitions. Second operand has 6 states, 5 states have (on average 8.2) internal successors, (41), 6 states have internal predecessors, (41), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-29 01:11:11,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:11:11,183 INFO L93 Difference]: Finished difference Result 423 states and 500 transitions. [2023-11-29 01:11:11,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 01:11:11,184 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.2) internal successors, (41), 6 states have internal predecessors, (41), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 55 [2023-11-29 01:11:11,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:11:11,187 INFO L225 Difference]: With dead ends: 423 [2023-11-29 01:11:11,187 INFO L226 Difference]: Without dead ends: 418 [2023-11-29 01:11:11,187 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2023-11-29 01:11:11,188 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 30 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:11:11,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 117 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:11:11,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2023-11-29 01:11:11,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 279. [2023-11-29 01:11:11,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 254 states have (on average 1.1496062992125984) internal successors, (292), 258 states have internal predecessors, (292), 18 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-11-29 01:11:11,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 328 transitions. [2023-11-29 01:11:11,219 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 328 transitions. Word has length 55 [2023-11-29 01:11:11,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:11:11,219 INFO L495 AbstractCegarLoop]: Abstraction has 279 states and 328 transitions. [2023-11-29 01:11:11,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.2) internal successors, (41), 6 states have internal predecessors, (41), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-29 01:11:11,220 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 328 transitions. [2023-11-29 01:11:11,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-29 01:11:11,220 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:11:11,221 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:11:11,225 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-11-29 01:11:11,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-29 01:11:11,421 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 01:11:11,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:11:11,422 INFO L85 PathProgramCache]: Analyzing trace with hash -1638756971, now seen corresponding path program 2 times [2023-11-29 01:11:11,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:11:11,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492242971] [2023-11-29 01:11:11,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:11:11,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:11:11,433 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:11:11,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1742111926] [2023-11-29 01:11:11,433 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:11:11,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:11:11,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:11:11,435 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:11:11,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-29 01:11:11,495 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 01:11:11,495 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:11:11,496 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 01:11:11,499 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:11:11,715 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 7 proven. 20 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-29 01:11:11,715 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:11:11,963 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 01:11:11,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:11:11,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492242971] [2023-11-29 01:11:11,963 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:11:11,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1742111926] [2023-11-29 01:11:11,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1742111926] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:11:11,963 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:11:11,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 15 [2023-11-29 01:11:11,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664348127] [2023-11-29 01:11:11,964 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:11:11,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 01:11:11,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:11:11,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 01:11:11,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2023-11-29 01:11:11,965 INFO L87 Difference]: Start difference. First operand 279 states and 328 transitions. Second operand has 16 states, 15 states have (on average 4.333333333333333) internal successors, (65), 15 states have internal predecessors, (65), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-29 01:11:12,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:11:12,326 INFO L93 Difference]: Finished difference Result 339 states and 397 transitions. [2023-11-29 01:11:12,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 01:11:12,327 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 4.333333333333333) internal successors, (65), 15 states have internal predecessors, (65), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) Word has length 57 [2023-11-29 01:11:12,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:11:12,330 INFO L225 Difference]: With dead ends: 339 [2023-11-29 01:11:12,330 INFO L226 Difference]: Without dead ends: 338 [2023-11-29 01:11:12,331 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 94 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=130, Invalid=422, Unknown=0, NotChecked=0, Total=552 [2023-11-29 01:11:12,332 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 111 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:11:12,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 96 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 01:11:12,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2023-11-29 01:11:12,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 333. [2023-11-29 01:11:12,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 304 states have (on average 1.138157894736842) internal successors, (346), 308 states have internal predecessors, (346), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-11-29 01:11:12,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 390 transitions. [2023-11-29 01:11:12,369 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 390 transitions. Word has length 57 [2023-11-29 01:11:12,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:11:12,369 INFO L495 AbstractCegarLoop]: Abstraction has 333 states and 390 transitions. [2023-11-29 01:11:12,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 4.333333333333333) internal successors, (65), 15 states have internal predecessors, (65), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-29 01:11:12,370 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 390 transitions. [2023-11-29 01:11:12,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-29 01:11:12,370 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:11:12,371 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:11:12,377 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-11-29 01:11:12,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-29 01:11:12,572 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 01:11:12,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:11:12,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1117961183, now seen corresponding path program 1 times [2023-11-29 01:11:12,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:11:12,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682405096] [2023-11-29 01:11:12,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:11:12,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:11:12,579 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:11:12,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [844275858] [2023-11-29 01:11:12,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:11:12,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:11:12,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:11:12,580 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:11:12,581 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-29 01:11:12,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:11:12,623 INFO L262 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 01:11:12,624 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:11:12,692 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-29 01:11:12,693 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:11:12,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:11:12,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682405096] [2023-11-29 01:11:12,693 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:11:12,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [844275858] [2023-11-29 01:11:12,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [844275858] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:11:12,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:11:12,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 01:11:12,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121501920] [2023-11-29 01:11:12,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:11:12,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 01:11:12,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:11:12,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 01:11:12,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:11:12,695 INFO L87 Difference]: Start difference. First operand 333 states and 390 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-29 01:11:12,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:11:12,777 INFO L93 Difference]: Finished difference Result 541 states and 633 transitions. [2023-11-29 01:11:12,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:11:12,778 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 57 [2023-11-29 01:11:12,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:11:12,780 INFO L225 Difference]: With dead ends: 541 [2023-11-29 01:11:12,780 INFO L226 Difference]: Without dead ends: 307 [2023-11-29 01:11:12,781 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:11:12,781 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 12 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:11:12,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 87 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:11:12,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2023-11-29 01:11:12,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 304. [2023-11-29 01:11:12,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 277 states have (on average 1.1263537906137184) internal successors, (312), 281 states have internal predecessors, (312), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-29 01:11:12,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 352 transitions. [2023-11-29 01:11:12,803 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 352 transitions. Word has length 57 [2023-11-29 01:11:12,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:11:12,803 INFO L495 AbstractCegarLoop]: Abstraction has 304 states and 352 transitions. [2023-11-29 01:11:12,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-29 01:11:12,803 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 352 transitions. [2023-11-29 01:11:12,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-11-29 01:11:12,804 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:11:12,804 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:11:12,810 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-11-29 01:11:13,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-29 01:11:13,005 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 01:11:13,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:11:13,005 INFO L85 PathProgramCache]: Analyzing trace with hash 1266525174, now seen corresponding path program 1 times [2023-11-29 01:11:13,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:11:13,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470672509] [2023-11-29 01:11:13,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:11:13,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:11:13,016 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:11:13,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1906615691] [2023-11-29 01:11:13,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:11:13,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:11:13,017 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:11:13,018 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:11:13,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-29 01:11:13,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:11:13,085 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 01:11:13,087 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:11:13,210 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 25 proven. 24 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-29 01:11:13,210 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:11:13,305 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 25 proven. 24 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-29 01:11:13,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:11:13,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470672509] [2023-11-29 01:11:13,306 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:11:13,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1906615691] [2023-11-29 01:11:13,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1906615691] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:11:13,306 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:11:13,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2023-11-29 01:11:13,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591183108] [2023-11-29 01:11:13,307 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:11:13,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 01:11:13,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:11:13,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 01:11:13,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:11:13,308 INFO L87 Difference]: Start difference. First operand 304 states and 352 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 5 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-29 01:11:13,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:11:13,506 INFO L93 Difference]: Finished difference Result 332 states and 376 transitions. [2023-11-29 01:11:13,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 01:11:13,507 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 5 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 75 [2023-11-29 01:11:13,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:11:13,509 INFO L225 Difference]: With dead ends: 332 [2023-11-29 01:11:13,509 INFO L226 Difference]: Without dead ends: 308 [2023-11-29 01:11:13,510 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 140 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-11-29 01:11:13,511 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 43 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:11:13,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 178 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:11:13,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2023-11-29 01:11:13,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 304. [2023-11-29 01:11:13,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 277 states have (on average 1.1191335740072201) internal successors, (310), 281 states have internal predecessors, (310), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-29 01:11:13,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 350 transitions. [2023-11-29 01:11:13,545 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 350 transitions. Word has length 75 [2023-11-29 01:11:13,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:11:13,546 INFO L495 AbstractCegarLoop]: Abstraction has 304 states and 350 transitions. [2023-11-29 01:11:13,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 5 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-29 01:11:13,546 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 350 transitions. [2023-11-29 01:11:13,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-11-29 01:11:13,547 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:11:13,548 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:11:13,554 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-11-29 01:11:13,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:11:13,748 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 01:11:13,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:11:13,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1935764544, now seen corresponding path program 3 times [2023-11-29 01:11:13,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:11:13,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178402224] [2023-11-29 01:11:13,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:11:13,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:11:13,757 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:11:13,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [818914843] [2023-11-29 01:11:13,757 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 01:11:13,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:11:13,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:11:13,758 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:11:13,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-29 01:11:14,030 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-29 01:11:14,030 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:11:14,032 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 01:11:14,033 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:11:14,080 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 38 proven. 5 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-29 01:11:14,080 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:11:15,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:11:15,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178402224] [2023-11-29 01:11:15,315 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:11:15,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [818914843] [2023-11-29 01:11:15,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [818914843] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:11:15,315 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:11:15,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2023-11-29 01:11:15,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574310972] [2023-11-29 01:11:15,315 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 01:11:15,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 01:11:15,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:11:15,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 01:11:15,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-29 01:11:15,317 INFO L87 Difference]: Start difference. First operand 304 states and 350 transitions. Second operand has 5 states, 4 states have (on average 11.0) internal successors, (44), 5 states have internal predecessors, (44), 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) [2023-11-29 01:11:15,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:11:15,396 INFO L93 Difference]: Finished difference Result 307 states and 350 transitions. [2023-11-29 01:11:15,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 01:11:15,396 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 11.0) internal successors, (44), 5 states have internal predecessors, (44), 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 75 [2023-11-29 01:11:15,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:11:15,398 INFO L225 Difference]: With dead ends: 307 [2023-11-29 01:11:15,398 INFO L226 Difference]: Without dead ends: 306 [2023-11-29 01:11:15,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-11-29 01:11:15,399 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 26 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:11:15,400 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 83 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:11:15,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2023-11-29 01:11:15,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 304. [2023-11-29 01:11:15,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 277 states have (on average 1.1155234657039712) internal successors, (309), 281 states have internal predecessors, (309), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-29 01:11:15,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 349 transitions. [2023-11-29 01:11:15,424 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 349 transitions. Word has length 75 [2023-11-29 01:11:15,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:11:15,425 INFO L495 AbstractCegarLoop]: Abstraction has 304 states and 349 transitions. [2023-11-29 01:11:15,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 11.0) internal successors, (44), 5 states have internal predecessors, (44), 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) [2023-11-29 01:11:15,425 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 349 transitions. [2023-11-29 01:11:15,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-11-29 01:11:15,426 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:11:15,426 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:11:15,432 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-11-29 01:11:15,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:11:15,626 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 01:11:15,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:11:15,627 INFO L85 PathProgramCache]: Analyzing trace with hash -385233554, now seen corresponding path program 2 times [2023-11-29 01:11:15,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:11:15,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046186029] [2023-11-29 01:11:15,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:11:15,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:11:15,643 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:11:15,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1164469815] [2023-11-29 01:11:15,643 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:11:15,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:11:15,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:11:15,644 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:11:15,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-29 01:11:15,694 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 01:11:15,694 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:11:15,695 INFO L262 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 01:11:15,697 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:11:15,812 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 6 proven. 55 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 01:11:15,812 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:11:16,038 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 6 proven. 55 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 01:11:16,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:11:16,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046186029] [2023-11-29 01:11:16,038 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:11:16,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1164469815] [2023-11-29 01:11:16,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1164469815] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:11:16,039 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:11:16,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2023-11-29 01:11:16,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883738977] [2023-11-29 01:11:16,039 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:11:16,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 01:11:16,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:11:16,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 01:11:16,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2023-11-29 01:11:16,041 INFO L87 Difference]: Start difference. First operand 304 states and 349 transitions. Second operand has 15 states, 14 states have (on average 8.142857142857142) internal successors, (114), 15 states have internal predecessors, (114), 7 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2023-11-29 01:11:16,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:11:16,664 INFO L93 Difference]: Finished difference Result 681 states and 768 transitions. [2023-11-29 01:11:16,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-29 01:11:16,664 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 8.142857142857142) internal successors, (114), 15 states have internal predecessors, (114), 7 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) Word has length 77 [2023-11-29 01:11:16,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:11:16,669 INFO L225 Difference]: With dead ends: 681 [2023-11-29 01:11:16,669 INFO L226 Difference]: Without dead ends: 680 [2023-11-29 01:11:16,670 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=263, Invalid=667, Unknown=0, NotChecked=0, Total=930 [2023-11-29 01:11:16,671 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 155 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:11:16,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 112 Invalid, 375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 01:11:16,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states. [2023-11-29 01:11:16,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 583. [2023-11-29 01:11:16,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 583 states, 542 states have (on average 1.088560885608856) internal successors, (590), 546 states have internal predecessors, (590), 34 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2023-11-29 01:11:16,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 658 transitions. [2023-11-29 01:11:16,741 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 658 transitions. Word has length 77 [2023-11-29 01:11:16,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:11:16,741 INFO L495 AbstractCegarLoop]: Abstraction has 583 states and 658 transitions. [2023-11-29 01:11:16,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 8.142857142857142) internal successors, (114), 15 states have internal predecessors, (114), 7 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2023-11-29 01:11:16,742 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 658 transitions. [2023-11-29 01:11:16,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-11-29 01:11:16,743 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:11:16,743 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:11:16,749 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-11-29 01:11:16,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-11-29 01:11:16,944 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 01:11:16,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:11:16,945 INFO L85 PathProgramCache]: Analyzing trace with hash 1602868179, now seen corresponding path program 1 times [2023-11-29 01:11:16,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:11:16,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234400116] [2023-11-29 01:11:16,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:11:16,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:11:16,955 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:11:16,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1547591535] [2023-11-29 01:11:16,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:11:16,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:11:16,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:11:16,959 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:11:16,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-29 01:11:17,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:11:17,024 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 01:11:17,026 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:11:17,118 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-29 01:11:17,119 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:11:17,229 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-29 01:11:17,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:11:17,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234400116] [2023-11-29 01:11:17,229 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:11:17,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1547591535] [2023-11-29 01:11:17,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1547591535] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:11:17,229 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:11:17,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2023-11-29 01:11:17,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197697185] [2023-11-29 01:11:17,230 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:11:17,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 01:11:17,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:11:17,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 01:11:17,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2023-11-29 01:11:17,232 INFO L87 Difference]: Start difference. First operand 583 states and 658 transitions. Second operand has 10 states, 9 states have (on average 13.88888888888889) internal successors, (125), 10 states have internal predecessors, (125), 9 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2023-11-29 01:11:17,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:11:17,820 INFO L93 Difference]: Finished difference Result 1177 states and 1372 transitions. [2023-11-29 01:11:17,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 01:11:17,821 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 13.88888888888889) internal successors, (125), 10 states have internal predecessors, (125), 9 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) Word has length 90 [2023-11-29 01:11:17,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:11:17,827 INFO L225 Difference]: With dead ends: 1177 [2023-11-29 01:11:17,827 INFO L226 Difference]: Without dead ends: 1176 [2023-11-29 01:11:17,827 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2023-11-29 01:11:17,828 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 157 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 01:11:17,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 173 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 01:11:17,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1176 states. [2023-11-29 01:11:17,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1176 to 1137. [2023-11-29 01:11:17,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1137 states, 1061 states have (on average 1.1413760603204524) internal successors, (1211), 1065 states have internal predecessors, (1211), 69 states have call successors, (69), 2 states have call predecessors, (69), 2 states have return successors, (69), 69 states have call predecessors, (69), 69 states have call successors, (69) [2023-11-29 01:11:17,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1137 states to 1137 states and 1349 transitions. [2023-11-29 01:11:17,908 INFO L78 Accepts]: Start accepts. Automaton has 1137 states and 1349 transitions. Word has length 90 [2023-11-29 01:11:17,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:11:17,909 INFO L495 AbstractCegarLoop]: Abstraction has 1137 states and 1349 transitions. [2023-11-29 01:11:17,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 13.88888888888889) internal successors, (125), 10 states have internal predecessors, (125), 9 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2023-11-29 01:11:17,909 INFO L276 IsEmpty]: Start isEmpty. Operand 1137 states and 1349 transitions. [2023-11-29 01:11:17,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-11-29 01:11:17,910 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:11:17,910 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:11:17,915 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-11-29 01:11:18,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-11-29 01:11:18,111 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 01:11:18,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:11:18,111 INFO L85 PathProgramCache]: Analyzing trace with hash -206256443, now seen corresponding path program 2 times [2023-11-29 01:11:18,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:11:18,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227584864] [2023-11-29 01:11:18,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:11:18,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:11:18,121 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:11:18,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [960201872] [2023-11-29 01:11:18,121 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:11:18,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:11:18,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:11:18,123 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:11:18,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-29 01:11:18,192 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 01:11:18,192 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:11:18,193 INFO L262 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 01:11:18,195 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:11:18,424 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-29 01:11:18,424 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:11:18,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:11:18,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227584864] [2023-11-29 01:11:18,553 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:11:18,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [960201872] [2023-11-29 01:11:18,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [960201872] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:11:18,553 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:11:18,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2023-11-29 01:11:18,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033607821] [2023-11-29 01:11:18,553 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 01:11:18,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 01:11:18,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:11:18,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 01:11:18,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-11-29 01:11:18,555 INFO L87 Difference]: Start difference. First operand 1137 states and 1349 transitions. Second operand has 7 states, 6 states have (on average 10.166666666666666) internal successors, (61), 7 states have internal predecessors, (61), 4 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2023-11-29 01:11:18,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:11:18,785 INFO L93 Difference]: Finished difference Result 1267 states and 1502 transitions. [2023-11-29 01:11:18,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 01:11:18,786 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.166666666666666) internal successors, (61), 7 states have internal predecessors, (61), 4 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) Word has length 95 [2023-11-29 01:11:18,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:11:18,793 INFO L225 Difference]: With dead ends: 1267 [2023-11-29 01:11:18,794 INFO L226 Difference]: Without dead ends: 1263 [2023-11-29 01:11:18,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-11-29 01:11:18,795 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 27 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:11:18,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 162 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:11:18,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1263 states. [2023-11-29 01:11:18,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1263 to 1257. [2023-11-29 01:11:18,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1257 states, 1174 states have (on average 1.1337308347529813) internal successors, (1331), 1178 states have internal predecessors, (1331), 76 states have call successors, (76), 2 states have call predecessors, (76), 2 states have return successors, (76), 76 states have call predecessors, (76), 76 states have call successors, (76) [2023-11-29 01:11:18,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1257 states to 1257 states and 1483 transitions. [2023-11-29 01:11:18,918 INFO L78 Accepts]: Start accepts. Automaton has 1257 states and 1483 transitions. Word has length 95 [2023-11-29 01:11:18,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:11:18,918 INFO L495 AbstractCegarLoop]: Abstraction has 1257 states and 1483 transitions. [2023-11-29 01:11:18,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.166666666666666) internal successors, (61), 7 states have internal predecessors, (61), 4 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2023-11-29 01:11:18,919 INFO L276 IsEmpty]: Start isEmpty. Operand 1257 states and 1483 transitions. [2023-11-29 01:11:18,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-11-29 01:11:18,920 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:11:18,920 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:11:18,927 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2023-11-29 01:11:19,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:11:19,121 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 01:11:19,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:11:19,122 INFO L85 PathProgramCache]: Analyzing trace with hash -940589179, now seen corresponding path program 2 times [2023-11-29 01:11:19,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:11:19,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242065423] [2023-11-29 01:11:19,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:11:19,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:11:19,133 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:11:19,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [451977682] [2023-11-29 01:11:19,133 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:11:19,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:11:19,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:11:19,135 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:11:19,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-11-29 01:11:19,195 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 01:11:19,195 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:11:19,197 INFO L262 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 01:11:19,198 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:11:19,311 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-11-29 01:11:19,312 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:11:19,454 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-11-29 01:11:19,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:11:19,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242065423] [2023-11-29 01:11:19,455 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:11:19,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [451977682] [2023-11-29 01:11:19,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [451977682] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:11:19,455 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:11:19,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-11-29 01:11:19,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041688703] [2023-11-29 01:11:19,455 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:11:19,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 01:11:19,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:11:19,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 01:11:19,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-11-29 01:11:19,457 INFO L87 Difference]: Start difference. First operand 1257 states and 1483 transitions. Second operand has 12 states, 11 states have (on average 13.545454545454545) internal successors, (149), 12 states have internal predecessors, (149), 11 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 11 states have call predecessors, (12), 11 states have call successors, (12) [2023-11-29 01:11:19,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:11:19,804 INFO L93 Difference]: Finished difference Result 2490 states and 3022 transitions. [2023-11-29 01:11:19,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 01:11:19,804 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 13.545454545454545) internal successors, (149), 12 states have internal predecessors, (149), 11 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 11 states have call predecessors, (12), 11 states have call successors, (12) Word has length 107 [2023-11-29 01:11:19,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:11:19,819 INFO L225 Difference]: With dead ends: 2490 [2023-11-29 01:11:19,819 INFO L226 Difference]: Without dead ends: 2489 [2023-11-29 01:11:19,820 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-11-29 01:11:19,821 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 185 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:11:19,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 181 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 01:11:19,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2489 states. [2023-11-29 01:11:20,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2489 to 2286. [2023-11-29 01:11:20,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2286 states, 2138 states have (on average 1.1693171188026192) internal successors, (2500), 2142 states have internal predecessors, (2500), 141 states have call successors, (141), 2 states have call predecessors, (141), 2 states have return successors, (141), 141 states have call predecessors, (141), 141 states have call successors, (141) [2023-11-29 01:11:20,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2286 states to 2286 states and 2782 transitions. [2023-11-29 01:11:20,022 INFO L78 Accepts]: Start accepts. Automaton has 2286 states and 2782 transitions. Word has length 107 [2023-11-29 01:11:20,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:11:20,023 INFO L495 AbstractCegarLoop]: Abstraction has 2286 states and 2782 transitions. [2023-11-29 01:11:20,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 13.545454545454545) internal successors, (149), 12 states have internal predecessors, (149), 11 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 11 states have call predecessors, (12), 11 states have call successors, (12) [2023-11-29 01:11:20,023 INFO L276 IsEmpty]: Start isEmpty. Operand 2286 states and 2782 transitions. [2023-11-29 01:11:20,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-11-29 01:11:20,025 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:11:20,025 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:11:20,031 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-11-29 01:11:20,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:11:20,226 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 01:11:20,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:11:20,226 INFO L85 PathProgramCache]: Analyzing trace with hash -321833708, now seen corresponding path program 3 times [2023-11-29 01:11:20,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:11:20,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588425113] [2023-11-29 01:11:20,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:11:20,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:11:20,236 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:11:20,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1114582175] [2023-11-29 01:11:20,236 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 01:11:20,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:11:20,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:11:20,237 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:11:20,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-11-29 01:11:20,303 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-11-29 01:11:20,303 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:11:20,304 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 01:11:20,306 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:11:20,513 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-11-29 01:11:20,513 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:11:20,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:11:20,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588425113] [2023-11-29 01:11:20,647 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:11:20,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1114582175] [2023-11-29 01:11:20,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1114582175] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:11:20,647 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:11:20,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2023-11-29 01:11:20,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256660273] [2023-11-29 01:11:20,647 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 01:11:20,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 01:11:20,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:11:20,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 01:11:20,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-11-29 01:11:20,649 INFO L87 Difference]: Start difference. First operand 2286 states and 2782 transitions. Second operand has 7 states, 6 states have (on average 10.166666666666666) internal successors, (61), 7 states have internal predecessors, (61), 4 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2023-11-29 01:11:20,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:11:20,980 INFO L93 Difference]: Finished difference Result 3666 states and 4543 transitions. [2023-11-29 01:11:20,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 01:11:20,981 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.166666666666666) internal successors, (61), 7 states have internal predecessors, (61), 4 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) Word has length 115 [2023-11-29 01:11:20,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:11:20,994 INFO L225 Difference]: With dead ends: 3666 [2023-11-29 01:11:20,994 INFO L226 Difference]: Without dead ends: 2258 [2023-11-29 01:11:20,997 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2023-11-29 01:11:20,998 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 61 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:11:20,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 184 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 01:11:21,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2258 states. [2023-11-29 01:11:21,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2258 to 2118. [2023-11-29 01:11:21,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2118 states, 1980 states have (on average 1.1737373737373737) internal successors, (2324), 1984 states have internal predecessors, (2324), 131 states have call successors, (131), 2 states have call predecessors, (131), 2 states have return successors, (131), 131 states have call predecessors, (131), 131 states have call successors, (131) [2023-11-29 01:11:21,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2118 states to 2118 states and 2586 transitions. [2023-11-29 01:11:21,229 INFO L78 Accepts]: Start accepts. Automaton has 2118 states and 2586 transitions. Word has length 115 [2023-11-29 01:11:21,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:11:21,230 INFO L495 AbstractCegarLoop]: Abstraction has 2118 states and 2586 transitions. [2023-11-29 01:11:21,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.166666666666666) internal successors, (61), 7 states have internal predecessors, (61), 4 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2023-11-29 01:11:21,231 INFO L276 IsEmpty]: Start isEmpty. Operand 2118 states and 2586 transitions. [2023-11-29 01:11:21,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-11-29 01:11:21,234 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:11:21,234 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:11:21,240 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2023-11-29 01:11:21,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-29 01:11:21,435 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 01:11:21,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:11:21,436 INFO L85 PathProgramCache]: Analyzing trace with hash -897409821, now seen corresponding path program 4 times [2023-11-29 01:11:21,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:11:21,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565051670] [2023-11-29 01:11:21,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:11:21,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:11:21,449 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:11:21,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1402080778] [2023-11-29 01:11:21,450 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 01:11:21,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:11:21,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:11:21,451 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:11:21,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-11-29 01:11:21,536 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 01:11:21,536 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:11:21,538 INFO L262 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 41 conjunts are in the unsatisfiable core [2023-11-29 01:11:21,540 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:11:22,431 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 9 proven. 220 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2023-11-29 01:11:22,431 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:11:22,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:11:22,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565051670] [2023-11-29 01:11:22,562 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:11:22,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1402080778] [2023-11-29 01:11:22,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1402080778] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:11:22,563 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:11:22,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2023-11-29 01:11:22,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073043480] [2023-11-29 01:11:22,564 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 01:11:22,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 01:11:22,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:11:22,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 01:11:22,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2023-11-29 01:11:22,565 INFO L87 Difference]: Start difference. First operand 2118 states and 2586 transitions. Second operand has 15 states, 14 states have (on average 6.142857142857143) internal successors, (86), 15 states have internal predecessors, (86), 6 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 5 states have call predecessors, (7), 6 states have call successors, (7) [2023-11-29 01:11:23,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:11:23,469 INFO L93 Difference]: Finished difference Result 2573 states and 3139 transitions. [2023-11-29 01:11:23,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 01:11:23,469 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 6.142857142857143) internal successors, (86), 15 states have internal predecessors, (86), 6 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 5 states have call predecessors, (7), 6 states have call successors, (7) Word has length 135 [2023-11-29 01:11:23,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:11:23,484 INFO L225 Difference]: With dead ends: 2573 [2023-11-29 01:11:23,484 INFO L226 Difference]: Without dead ends: 2569 [2023-11-29 01:11:23,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=82, Invalid=380, Unknown=0, NotChecked=0, Total=462 [2023-11-29 01:11:23,486 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 49 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 865 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 865 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 01:11:23,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 211 Invalid, 869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 865 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 01:11:23,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2569 states. [2023-11-29 01:11:23,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2569 to 2236. [2023-11-29 01:11:23,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2236 states, 2090 states have (on average 1.1717703349282296) internal successors, (2449), 2094 states have internal predecessors, (2449), 139 states have call successors, (139), 2 states have call predecessors, (139), 2 states have return successors, (139), 139 states have call predecessors, (139), 139 states have call successors, (139) [2023-11-29 01:11:23,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2236 states to 2236 states and 2727 transitions. [2023-11-29 01:11:23,721 INFO L78 Accepts]: Start accepts. Automaton has 2236 states and 2727 transitions. Word has length 135 [2023-11-29 01:11:23,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:11:23,722 INFO L495 AbstractCegarLoop]: Abstraction has 2236 states and 2727 transitions. [2023-11-29 01:11:23,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 6.142857142857143) internal successors, (86), 15 states have internal predecessors, (86), 6 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 5 states have call predecessors, (7), 6 states have call successors, (7) [2023-11-29 01:11:23,723 INFO L276 IsEmpty]: Start isEmpty. Operand 2236 states and 2727 transitions. [2023-11-29 01:11:23,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-11-29 01:11:23,725 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:11:23,726 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:11:23,732 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-11-29 01:11:23,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:11:23,926 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 01:11:23,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:11:23,927 INFO L85 PathProgramCache]: Analyzing trace with hash -62504019, now seen corresponding path program 5 times [2023-11-29 01:11:23,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:11:23,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8713381] [2023-11-29 01:11:23,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:11:23,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:11:23,936 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:11:23,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1746865102] [2023-11-29 01:11:23,937 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 01:11:23,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:11:23,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:11:23,938 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:11:23,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-11-29 01:11:24,008 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2023-11-29 01:11:24,009 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:11:24,010 INFO L262 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 01:11:24,012 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:11:24,405 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 12 proven. 198 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2023-11-29 01:11:24,405 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:11:24,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:11:24,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8713381] [2023-11-29 01:11:24,535 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:11:24,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1746865102] [2023-11-29 01:11:24,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1746865102] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:11:24,536 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:11:24,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2023-11-29 01:11:24,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811829223] [2023-11-29 01:11:24,536 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 01:11:24,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 01:11:24,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:11:24,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 01:11:24,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2023-11-29 01:11:24,537 INFO L87 Difference]: Start difference. First operand 2236 states and 2727 transitions. Second operand has 10 states, 9 states have (on average 10.11111111111111) internal successors, (91), 10 states have internal predecessors, (91), 6 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2023-11-29 01:11:25,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:11:25,003 INFO L93 Difference]: Finished difference Result 2555 states and 3118 transitions. [2023-11-29 01:11:25,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 01:11:25,004 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 10.11111111111111) internal successors, (91), 10 states have internal predecessors, (91), 6 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) Word has length 135 [2023-11-29 01:11:25,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:11:25,018 INFO L225 Difference]: With dead ends: 2555 [2023-11-29 01:11:25,019 INFO L226 Difference]: Without dead ends: 2551 [2023-11-29 01:11:25,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2023-11-29 01:11:25,021 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 31 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 447 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:11:25,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 288 Invalid, 448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 447 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 01:11:25,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2551 states. [2023-11-29 01:11:25,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2551 to 2545. [2023-11-29 01:11:25,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2545 states, 2379 states have (on average 1.1664564943253468) internal successors, (2775), 2383 states have internal predecessors, (2775), 159 states have call successors, (159), 2 states have call predecessors, (159), 2 states have return successors, (159), 159 states have call predecessors, (159), 159 states have call successors, (159) [2023-11-29 01:11:25,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2545 states to 2545 states and 3093 transitions. [2023-11-29 01:11:25,260 INFO L78 Accepts]: Start accepts. Automaton has 2545 states and 3093 transitions. Word has length 135 [2023-11-29 01:11:25,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:11:25,261 INFO L495 AbstractCegarLoop]: Abstraction has 2545 states and 3093 transitions. [2023-11-29 01:11:25,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 10.11111111111111) internal successors, (91), 10 states have internal predecessors, (91), 6 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2023-11-29 01:11:25,261 INFO L276 IsEmpty]: Start isEmpty. Operand 2545 states and 3093 transitions. [2023-11-29 01:11:25,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-11-29 01:11:25,264 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:11:25,264 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:11:25,271 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2023-11-29 01:11:25,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-29 01:11:25,465 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 01:11:25,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:11:25,466 INFO L85 PathProgramCache]: Analyzing trace with hash -1350152142, now seen corresponding path program 6 times [2023-11-29 01:11:25,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:11:25,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415485146] [2023-11-29 01:11:25,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:11:25,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:11:25,476 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:11:25,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1175610223] [2023-11-29 01:11:25,477 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 01:11:25,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:11:25,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:11:25,478 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:11:25,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-11-29 01:11:25,721 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2023-11-29 01:11:25,721 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:11:25,723 INFO L262 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 01:11:25,725 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:11:25,924 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 109 proven. 208 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2023-11-29 01:11:25,925 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:11:26,086 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 109 proven. 208 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2023-11-29 01:11:26,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:11:26,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415485146] [2023-11-29 01:11:26,086 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:11:26,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1175610223] [2023-11-29 01:11:26,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1175610223] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:11:26,086 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:11:26,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 13 [2023-11-29 01:11:26,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141891762] [2023-11-29 01:11:26,087 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:11:26,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 01:11:26,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:11:26,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 01:11:26,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2023-11-29 01:11:26,088 INFO L87 Difference]: Start difference. First operand 2545 states and 3093 transitions. Second operand has 13 states, 13 states have (on average 12.307692307692308) internal successors, (160), 13 states have internal predecessors, (160), 11 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 11 states have call predecessors, (12), 11 states have call successors, (12) [2023-11-29 01:11:26,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:11:26,915 INFO L93 Difference]: Finished difference Result 5407 states and 6700 transitions. [2023-11-29 01:11:26,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 01:11:26,916 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 12.307692307692308) internal successors, (160), 13 states have internal predecessors, (160), 11 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 11 states have call predecessors, (12), 11 states have call successors, (12) Word has length 155 [2023-11-29 01:11:26,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:11:26,933 INFO L225 Difference]: With dead ends: 5407 [2023-11-29 01:11:26,934 INFO L226 Difference]: Without dead ends: 3994 [2023-11-29 01:11:26,936 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 292 SyntacticMatches, 5 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2023-11-29 01:11:26,937 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 91 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 601 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 601 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 01:11:26,937 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 419 Invalid, 603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 601 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 01:11:26,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3994 states. [2023-11-29 01:11:27,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3994 to 2931. [2023-11-29 01:11:27,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2931 states, 2741 states have (on average 1.1597956950018242) internal successors, (3179), 2745 states have internal predecessors, (3179), 183 states have call successors, (183), 2 states have call predecessors, (183), 2 states have return successors, (183), 183 states have call predecessors, (183), 183 states have call successors, (183) [2023-11-29 01:11:27,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2931 states to 2931 states and 3545 transitions. [2023-11-29 01:11:27,185 INFO L78 Accepts]: Start accepts. Automaton has 2931 states and 3545 transitions. Word has length 155 [2023-11-29 01:11:27,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:11:27,185 INFO L495 AbstractCegarLoop]: Abstraction has 2931 states and 3545 transitions. [2023-11-29 01:11:27,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 12.307692307692308) internal successors, (160), 13 states have internal predecessors, (160), 11 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 11 states have call predecessors, (12), 11 states have call successors, (12) [2023-11-29 01:11:27,186 INFO L276 IsEmpty]: Start isEmpty. Operand 2931 states and 3545 transitions. [2023-11-29 01:11:27,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-11-29 01:11:27,188 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:11:27,188 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:11:27,194 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2023-11-29 01:11:27,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:11:27,389 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 01:11:27,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:11:27,389 INFO L85 PathProgramCache]: Analyzing trace with hash -515246340, now seen corresponding path program 7 times [2023-11-29 01:11:27,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:11:27,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946333390] [2023-11-29 01:11:27,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:11:27,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:11:27,405 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:11:27,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2038503904] [2023-11-29 01:11:27,405 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 01:11:27,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:11:27,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:11:27,407 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:11:27,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-11-29 01:11:27,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:11:27,500 INFO L262 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 01:11:27,503 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:11:27,687 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 235 proven. 92 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-29 01:11:27,687 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:11:27,815 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 195 proven. 92 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2023-11-29 01:11:27,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:11:27,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946333390] [2023-11-29 01:11:27,816 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:11:27,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2038503904] [2023-11-29 01:11:27,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2038503904] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:11:27,816 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:11:27,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2023-11-29 01:11:27,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457526959] [2023-11-29 01:11:27,816 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:11:27,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 01:11:27,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:11:27,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 01:11:27,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-29 01:11:27,818 INFO L87 Difference]: Start difference. First operand 2931 states and 3545 transitions. Second operand has 10 states, 10 states have (on average 13.2) internal successors, (132), 10 states have internal predecessors, (132), 9 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 9 states have call predecessors, (11), 9 states have call successors, (11) [2023-11-29 01:11:28,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:11:28,425 INFO L93 Difference]: Finished difference Result 5506 states and 6795 transitions. [2023-11-29 01:11:28,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 01:11:28,426 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 13.2) internal successors, (132), 10 states have internal predecessors, (132), 9 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 9 states have call predecessors, (11), 9 states have call successors, (11) Word has length 155 [2023-11-29 01:11:28,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:11:28,442 INFO L225 Difference]: With dead ends: 5506 [2023-11-29 01:11:28,442 INFO L226 Difference]: Without dead ends: 3978 [2023-11-29 01:11:28,445 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 296 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-11-29 01:11:28,446 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 78 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:11:28,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 272 Invalid, 377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 375 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 01:11:28,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3978 states. [2023-11-29 01:11:28,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3978 to 3100. [2023-11-29 01:11:28,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3100 states, 2899 states have (on average 1.1576405657123146) internal successors, (3356), 2903 states have internal predecessors, (3356), 194 states have call successors, (194), 2 states have call predecessors, (194), 2 states have return successors, (194), 194 states have call predecessors, (194), 194 states have call successors, (194) [2023-11-29 01:11:28,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3100 states to 3100 states and 3744 transitions. [2023-11-29 01:11:28,707 INFO L78 Accepts]: Start accepts. Automaton has 3100 states and 3744 transitions. Word has length 155 [2023-11-29 01:11:28,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:11:28,707 INFO L495 AbstractCegarLoop]: Abstraction has 3100 states and 3744 transitions. [2023-11-29 01:11:28,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.2) internal successors, (132), 10 states have internal predecessors, (132), 9 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 9 states have call predecessors, (11), 9 states have call successors, (11) [2023-11-29 01:11:28,707 INFO L276 IsEmpty]: Start isEmpty. Operand 3100 states and 3744 transitions. [2023-11-29 01:11:28,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-11-29 01:11:28,709 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:11:28,709 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:11:28,714 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2023-11-29 01:11:28,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-11-29 01:11:28,910 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 01:11:28,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:11:28,910 INFO L85 PathProgramCache]: Analyzing trace with hash -1886262102, now seen corresponding path program 3 times [2023-11-29 01:11:28,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:11:28,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869940041] [2023-11-29 01:11:28,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:11:28,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:11:28,918 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:11:28,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [417287080] [2023-11-29 01:11:28,919 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 01:11:28,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:11:28,919 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:11:28,920 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:11:28,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-11-29 01:11:28,976 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2023-11-29 01:11:28,976 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:11:28,977 INFO L262 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 01:11:28,980 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:11:29,176 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 18 proven. 347 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-29 01:11:29,176 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:11:29,524 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 18 proven. 347 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-29 01:11:29,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:11:29,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869940041] [2023-11-29 01:11:29,525 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:11:29,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [417287080] [2023-11-29 01:11:29,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [417287080] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:11:29,525 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:11:29,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2023-11-29 01:11:29,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080434352] [2023-11-29 01:11:29,525 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:11:29,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-29 01:11:29,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:11:29,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-29 01:11:29,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=364, Unknown=0, NotChecked=0, Total=506 [2023-11-29 01:11:29,528 INFO L87 Difference]: Start difference. First operand 3100 states and 3744 transitions. Second operand has 23 states, 22 states have (on average 10.636363636363637) internal successors, (234), 23 states have internal predecessors, (234), 15 states have call successors, (16), 1 states have call predecessors, (16), 2 states have return successors, (16), 15 states have call predecessors, (16), 15 states have call successors, (16) [2023-11-29 01:11:31,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:11:31,228 INFO L93 Difference]: Finished difference Result 6751 states and 7989 transitions. [2023-11-29 01:11:31,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2023-11-29 01:11:31,228 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 10.636363636363637) internal successors, (234), 23 states have internal predecessors, (234), 15 states have call successors, (16), 1 states have call predecessors, (16), 2 states have return successors, (16), 15 states have call predecessors, (16), 15 states have call successors, (16) Word has length 157 [2023-11-29 01:11:31,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:11:31,259 INFO L225 Difference]: With dead ends: 6751 [2023-11-29 01:11:31,259 INFO L226 Difference]: Without dead ends: 6750 [2023-11-29 01:11:31,262 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 291 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 872 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1051, Invalid=2371, Unknown=0, NotChecked=0, Total=3422 [2023-11-29 01:11:31,263 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 357 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 509 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 01:11:31,263 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [358 Valid, 161 Invalid, 552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 509 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 01:11:31,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6750 states. [2023-11-29 01:11:31,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6750 to 6554. [2023-11-29 01:11:31,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6554 states, 6166 states have (on average 1.1070385987674343) internal successors, (6826), 6170 states have internal predecessors, (6826), 381 states have call successors, (381), 2 states have call predecessors, (381), 2 states have return successors, (381), 381 states have call predecessors, (381), 381 states have call successors, (381) [2023-11-29 01:11:31,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6554 states to 6554 states and 7588 transitions. [2023-11-29 01:11:31,719 INFO L78 Accepts]: Start accepts. Automaton has 6554 states and 7588 transitions. Word has length 157 [2023-11-29 01:11:31,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:11:31,720 INFO L495 AbstractCegarLoop]: Abstraction has 6554 states and 7588 transitions. [2023-11-29 01:11:31,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 10.636363636363637) internal successors, (234), 23 states have internal predecessors, (234), 15 states have call successors, (16), 1 states have call predecessors, (16), 2 states have return successors, (16), 15 states have call predecessors, (16), 15 states have call successors, (16) [2023-11-29 01:11:31,720 INFO L276 IsEmpty]: Start isEmpty. Operand 6554 states and 7588 transitions. [2023-11-29 01:11:31,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-11-29 01:11:31,723 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:11:31,723 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:11:31,728 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2023-11-29 01:11:31,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:11:31,924 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 01:11:31,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:11:31,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1131873023, now seen corresponding path program 8 times [2023-11-29 01:11:31,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:11:31,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210605888] [2023-11-29 01:11:31,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:11:31,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:11:31,934 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:11:31,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1513664597] [2023-11-29 01:11:31,935 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:11:31,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:11:31,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:11:31,937 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:11:31,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-11-29 01:11:32,028 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 01:11:32,028 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:11:32,030 INFO L262 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 01:11:32,034 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:11:32,430 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 0 proven. 340 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2023-11-29 01:11:32,430 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:11:32,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:11:32,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210605888] [2023-11-29 01:11:32,549 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:11:32,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1513664597] [2023-11-29 01:11:32,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1513664597] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:11:32,549 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:11:32,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2023-11-29 01:11:32,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139869170] [2023-11-29 01:11:32,550 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 01:11:32,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 01:11:32,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:11:32,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 01:11:32,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-11-29 01:11:32,551 INFO L87 Difference]: Start difference. First operand 6554 states and 7588 transitions. Second operand has 9 states, 8 states have (on average 11.375) internal successors, (91), 9 states have internal predecessors, (91), 6 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2023-11-29 01:11:33,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:11:33,393 INFO L93 Difference]: Finished difference Result 7044 states and 8174 transitions. [2023-11-29 01:11:33,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 01:11:33,394 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 11.375) internal successors, (91), 9 states have internal predecessors, (91), 6 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) Word has length 175 [2023-11-29 01:11:33,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:11:33,407 INFO L225 Difference]: With dead ends: 7044 [2023-11-29 01:11:33,408 INFO L226 Difference]: Without dead ends: 7040 [2023-11-29 01:11:33,409 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2023-11-29 01:11:33,409 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 32 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 508 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:11:33,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 283 Invalid, 509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 508 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 01:11:33,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7040 states. [2023-11-29 01:11:33,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7040 to 6439. [2023-11-29 01:11:33,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6439 states, 6057 states have (on average 1.106323262341093) internal successors, (6701), 6061 states have internal predecessors, (6701), 375 states have call successors, (375), 2 states have call predecessors, (375), 2 states have return successors, (375), 375 states have call predecessors, (375), 375 states have call successors, (375) [2023-11-29 01:11:33,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6439 states to 6439 states and 7451 transitions. [2023-11-29 01:11:33,923 INFO L78 Accepts]: Start accepts. Automaton has 6439 states and 7451 transitions. Word has length 175 [2023-11-29 01:11:33,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:11:33,923 INFO L495 AbstractCegarLoop]: Abstraction has 6439 states and 7451 transitions. [2023-11-29 01:11:33,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 11.375) internal successors, (91), 9 states have internal predecessors, (91), 6 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2023-11-29 01:11:33,923 INFO L276 IsEmpty]: Start isEmpty. Operand 6439 states and 7451 transitions. [2023-11-29 01:11:33,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-11-29 01:11:33,926 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:11:33,926 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:11:33,931 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2023-11-29 01:11:34,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2023-11-29 01:11:34,127 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 01:11:34,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:11:34,127 INFO L85 PathProgramCache]: Analyzing trace with hash 1708308629, now seen corresponding path program 9 times [2023-11-29 01:11:34,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:11:34,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566496786] [2023-11-29 01:11:34,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:11:34,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:11:34,140 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:11:34,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1975709388] [2023-11-29 01:11:34,141 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 01:11:34,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:11:34,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:11:34,142 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:11:34,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-11-29 01:11:34,233 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2023-11-29 01:11:34,233 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:11:34,235 INFO L262 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 01:11:34,238 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:11:34,504 INFO L134 CoverageAnalysis]: Checked inductivity of 524 backedges. 0 proven. 372 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2023-11-29 01:11:34,505 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:11:34,913 INFO L134 CoverageAnalysis]: Checked inductivity of 524 backedges. 0 proven. 372 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2023-11-29 01:11:34,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:11:34,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566496786] [2023-11-29 01:11:34,913 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:11:34,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1975709388] [2023-11-29 01:11:34,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1975709388] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:11:34,913 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:11:34,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2023-11-29 01:11:34,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481687337] [2023-11-29 01:11:34,914 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:11:34,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 01:11:34,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:11:34,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 01:11:34,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2023-11-29 01:11:34,916 INFO L87 Difference]: Start difference. First operand 6439 states and 7451 transitions. Second operand has 16 states, 15 states have (on average 13.0) internal successors, (195), 16 states have internal predecessors, (195), 11 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 11 states have call predecessors, (12), 11 states have call successors, (12) [2023-11-29 01:11:37,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:11:37,735 INFO L93 Difference]: Finished difference Result 7351 states and 8558 transitions. [2023-11-29 01:11:37,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-11-29 01:11:37,735 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 13.0) internal successors, (195), 16 states have internal predecessors, (195), 11 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 11 states have call predecessors, (12), 11 states have call successors, (12) Word has length 175 [2023-11-29 01:11:37,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:11:37,752 INFO L225 Difference]: With dead ends: 7351 [2023-11-29 01:11:37,752 INFO L226 Difference]: Without dead ends: 7316 [2023-11-29 01:11:37,755 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 334 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1127 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=849, Invalid=2691, Unknown=0, NotChecked=0, Total=3540 [2023-11-29 01:11:37,756 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 550 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 995 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 552 SdHoareTripleChecker+Valid, 476 SdHoareTripleChecker+Invalid, 1054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 01:11:37,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [552 Valid, 476 Invalid, 1054 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 995 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-29 01:11:37,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7316 states. [2023-11-29 01:11:38,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7316 to 5958. [2023-11-29 01:11:38,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5958 states, 5608 states have (on average 1.0608059914407988) internal successors, (5949), 5611 states have internal predecessors, (5949), 344 states have call successors, (344), 2 states have call predecessors, (344), 2 states have return successors, (344), 344 states have call predecessors, (344), 344 states have call successors, (344) [2023-11-29 01:11:38,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5958 states to 5958 states and 6637 transitions. [2023-11-29 01:11:38,398 INFO L78 Accepts]: Start accepts. Automaton has 5958 states and 6637 transitions. Word has length 175 [2023-11-29 01:11:38,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:11:38,398 INFO L495 AbstractCegarLoop]: Abstraction has 5958 states and 6637 transitions. [2023-11-29 01:11:38,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 13.0) internal successors, (195), 16 states have internal predecessors, (195), 11 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 11 states have call predecessors, (12), 11 states have call successors, (12) [2023-11-29 01:11:38,399 INFO L276 IsEmpty]: Start isEmpty. Operand 5958 states and 6637 transitions. [2023-11-29 01:11:38,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2023-11-29 01:11:38,402 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:11:38,403 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:11:38,408 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2023-11-29 01:11:38,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:11:38,603 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 01:11:38,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:11:38,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1824792118, now seen corresponding path program 2 times [2023-11-29 01:11:38,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:11:38,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928462076] [2023-11-29 01:11:38,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:11:38,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:11:38,618 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:11:38,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1779340633] [2023-11-29 01:11:38,618 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:11:38,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:11:38,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:11:38,620 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:11:38,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-11-29 01:11:38,707 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 01:11:38,708 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:11:38,709 INFO L262 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 01:11:38,713 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:11:38,897 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 560 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-11-29 01:11:38,897 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:11:39,162 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 560 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-11-29 01:11:39,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:11:39,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928462076] [2023-11-29 01:11:39,162 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:11:39,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1779340633] [2023-11-29 01:11:39,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1779340633] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:11:39,163 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:11:39,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2023-11-29 01:11:39,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436407364] [2023-11-29 01:11:39,163 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:11:39,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-29 01:11:39,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:11:39,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-29 01:11:39,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2023-11-29 01:11:39,165 INFO L87 Difference]: Start difference. First operand 5958 states and 6637 transitions. Second operand has 20 states, 19 states have (on average 14.473684210526315) internal successors, (275), 20 states have internal predecessors, (275), 19 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 19 states have call predecessors, (20), 19 states have call successors, (20) [2023-11-29 01:11:40,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:11:40,637 INFO L93 Difference]: Finished difference Result 8683 states and 9773 transitions. [2023-11-29 01:11:40,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-29 01:11:40,638 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 14.473684210526315) internal successors, (275), 20 states have internal predecessors, (275), 19 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 19 states have call predecessors, (20), 19 states have call successors, (20) Word has length 190 [2023-11-29 01:11:40,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:11:40,658 INFO L225 Difference]: With dead ends: 8683 [2023-11-29 01:11:40,658 INFO L226 Difference]: Without dead ends: 8682 [2023-11-29 01:11:40,660 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 360 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2023-11-29 01:11:40,661 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 347 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 01:11:40,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [347 Valid, 306 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 01:11:40,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8682 states. [2023-11-29 01:11:41,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8682 to 8631. [2023-11-29 01:11:41,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8631 states, 8113 states have (on average 1.073462344385554) internal successors, (8709), 8116 states have internal predecessors, (8709), 512 states have call successors, (512), 2 states have call predecessors, (512), 2 states have return successors, (512), 512 states have call predecessors, (512), 512 states have call successors, (512) [2023-11-29 01:11:41,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8631 states to 8631 states and 9733 transitions. [2023-11-29 01:11:41,557 INFO L78 Accepts]: Start accepts. Automaton has 8631 states and 9733 transitions. Word has length 190 [2023-11-29 01:11:41,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:11:41,558 INFO L495 AbstractCegarLoop]: Abstraction has 8631 states and 9733 transitions. [2023-11-29 01:11:41,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 14.473684210526315) internal successors, (275), 20 states have internal predecessors, (275), 19 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 19 states have call predecessors, (20), 19 states have call successors, (20) [2023-11-29 01:11:41,558 INFO L276 IsEmpty]: Start isEmpty. Operand 8631 states and 9733 transitions. [2023-11-29 01:11:41,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2023-11-29 01:11:41,561 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:11:41,561 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 7, 7, 7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:11:41,567 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2023-11-29 01:11:41,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:11:41,762 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 01:11:41,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:11:41,762 INFO L85 PathProgramCache]: Analyzing trace with hash -2046102192, now seen corresponding path program 10 times [2023-11-29 01:11:41,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:11:41,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889982374] [2023-11-29 01:11:41,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:11:41,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:11:41,774 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:11:41,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [327196596] [2023-11-29 01:11:41,774 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 01:11:41,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:11:41,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:11:41,776 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:11:41,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-11-29 01:11:41,868 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 01:11:41,868 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:11:41,870 INFO L262 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 01:11:41,874 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:11:42,144 INFO L134 CoverageAnalysis]: Checked inductivity of 695 backedges. 175 proven. 372 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-11-29 01:11:42,144 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:11:42,343 INFO L134 CoverageAnalysis]: Checked inductivity of 695 backedges. 175 proven. 372 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-11-29 01:11:42,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:11:42,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889982374] [2023-11-29 01:11:42,344 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:11:42,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [327196596] [2023-11-29 01:11:42,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [327196596] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:11:42,344 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:11:42,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 16 [2023-11-29 01:11:42,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408852604] [2023-11-29 01:11:42,345 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:11:42,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 01:11:42,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:11:42,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 01:11:42,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2023-11-29 01:11:42,347 INFO L87 Difference]: Start difference. First operand 8631 states and 9733 transitions. Second operand has 16 states, 16 states have (on average 12.8125) internal successors, (205), 16 states have internal predecessors, (205), 14 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 14 states have call predecessors, (15), 14 states have call successors, (15) [2023-11-29 01:11:43,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:11:43,658 INFO L93 Difference]: Finished difference Result 15364 states and 17529 transitions. [2023-11-29 01:11:43,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 01:11:43,659 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 12.8125) internal successors, (205), 16 states have internal predecessors, (205), 14 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 14 states have call predecessors, (15), 14 states have call successors, (15) Word has length 195 [2023-11-29 01:11:43,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:11:43,674 INFO L225 Difference]: With dead ends: 15364 [2023-11-29 01:11:43,674 INFO L226 Difference]: Without dead ends: 12014 [2023-11-29 01:11:43,680 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 393 GetRequests, 368 SyntacticMatches, 6 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=115, Invalid=305, Unknown=0, NotChecked=0, Total=420 [2023-11-29 01:11:43,680 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 59 mSDsluCounter, 411 mSDsCounter, 0 mSdLazyCounter, 768 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 508 SdHoareTripleChecker+Invalid, 770 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:11:43,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 508 Invalid, 770 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 768 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 01:11:43,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12014 states. [2023-11-29 01:11:44,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12014 to 9969. [2023-11-29 01:11:44,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9969 states, 9367 states have (on average 1.0692857905412618) internal successors, (10016), 9370 states have internal predecessors, (10016), 596 states have call successors, (596), 2 states have call predecessors, (596), 2 states have return successors, (596), 596 states have call predecessors, (596), 596 states have call successors, (596) [2023-11-29 01:11:44,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9969 states to 9969 states and 11208 transitions. [2023-11-29 01:11:44,533 INFO L78 Accepts]: Start accepts. Automaton has 9969 states and 11208 transitions. Word has length 195 [2023-11-29 01:11:44,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:11:44,533 INFO L495 AbstractCegarLoop]: Abstraction has 9969 states and 11208 transitions. [2023-11-29 01:11:44,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 12.8125) internal successors, (205), 16 states have internal predecessors, (205), 14 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 14 states have call predecessors, (15), 14 states have call successors, (15) [2023-11-29 01:11:44,533 INFO L276 IsEmpty]: Start isEmpty. Operand 9969 states and 11208 transitions. [2023-11-29 01:11:44,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2023-11-29 01:11:44,536 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:11:44,536 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:11:44,541 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2023-11-29 01:11:44,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2023-11-29 01:11:44,737 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 01:11:44,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:11:44,737 INFO L85 PathProgramCache]: Analyzing trace with hash -40826342, now seen corresponding path program 11 times [2023-11-29 01:11:44,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:11:44,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746268146] [2023-11-29 01:11:44,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:11:44,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:11:44,748 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:11:44,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [325845593] [2023-11-29 01:11:44,749 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 01:11:44,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:11:44,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:11:44,750 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:11:44,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-11-29 01:11:44,849 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2023-11-29 01:11:44,849 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:11:44,851 INFO L262 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 01:11:44,854 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:11:45,179 INFO L134 CoverageAnalysis]: Checked inductivity of 679 backedges. 0 proven. 451 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked. [2023-11-29 01:11:45,179 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:11:45,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:11:45,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746268146] [2023-11-29 01:11:45,288 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:11:45,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [325845593] [2023-11-29 01:11:45,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [325845593] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:11:45,288 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:11:45,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2023-11-29 01:11:45,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647329730] [2023-11-29 01:11:45,288 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 01:11:45,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 01:11:45,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:11:45,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 01:11:45,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-11-29 01:11:45,289 INFO L87 Difference]: Start difference. First operand 9969 states and 11208 transitions. Second operand has 9 states, 8 states have (on average 12.0) internal successors, (96), 9 states have internal predecessors, (96), 6 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2023-11-29 01:11:46,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:11:46,140 INFO L93 Difference]: Finished difference Result 14658 states and 16585 transitions. [2023-11-29 01:11:46,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 01:11:46,141 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 12.0) internal successors, (96), 9 states have internal predecessors, (96), 6 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) Word has length 195 [2023-11-29 01:11:46,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:11:46,151 INFO L225 Difference]: With dead ends: 14658 [2023-11-29 01:11:46,151 INFO L226 Difference]: Without dead ends: 9942 [2023-11-29 01:11:46,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2023-11-29 01:11:46,158 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 80 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:11:46,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 270 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 469 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 01:11:46,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9942 states. [2023-11-29 01:11:46,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9942 to 9608. [2023-11-29 01:11:46,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9608 states, 9026 states have (on average 1.0701307334367383) internal successors, (9659), 9029 states have internal predecessors, (9659), 576 states have call successors, (576), 2 states have call predecessors, (576), 2 states have return successors, (576), 576 states have call predecessors, (576), 576 states have call successors, (576) [2023-11-29 01:11:46,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9608 states to 9608 states and 10811 transitions. [2023-11-29 01:11:46,995 INFO L78 Accepts]: Start accepts. Automaton has 9608 states and 10811 transitions. Word has length 195 [2023-11-29 01:11:46,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:11:46,996 INFO L495 AbstractCegarLoop]: Abstraction has 9608 states and 10811 transitions. [2023-11-29 01:11:46,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 12.0) internal successors, (96), 9 states have internal predecessors, (96), 6 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2023-11-29 01:11:46,996 INFO L276 IsEmpty]: Start isEmpty. Operand 9608 states and 10811 transitions. [2023-11-29 01:11:47,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2023-11-29 01:11:47,001 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:11:47,001 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:11:47,007 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2023-11-29 01:11:47,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-11-29 01:11:47,202 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 01:11:47,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:11:47,203 INFO L85 PathProgramCache]: Analyzing trace with hash 959833887, now seen corresponding path program 12 times [2023-11-29 01:11:47,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:11:47,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717131149] [2023-11-29 01:11:47,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:11:47,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:11:47,225 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:11:47,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1530608843] [2023-11-29 01:11:47,225 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 01:11:47,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:11:47,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:11:47,227 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:11:47,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2023-11-29 01:11:47,821 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2023-11-29 01:11:47,822 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:11:47,825 INFO L262 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-29 01:11:47,830 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:11:48,405 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked. [2023-11-29 01:11:48,405 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:11:48,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:11:48,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717131149] [2023-11-29 01:11:48,526 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:11:48,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1530608843] [2023-11-29 01:11:48,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1530608843] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:11:48,527 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:11:48,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2023-11-29 01:11:48,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489309333] [2023-11-29 01:11:48,527 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 01:11:48,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 01:11:48,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:11:48,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 01:11:48,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-11-29 01:11:48,529 INFO L87 Difference]: Start difference. First operand 9608 states and 10811 transitions. Second operand has 10 states, 9 states have (on average 11.777777777777779) internal successors, (106), 10 states have internal predecessors, (106), 7 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2023-11-29 01:11:49,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:11:49,626 INFO L93 Difference]: Finished difference Result 10001 states and 11246 transitions. [2023-11-29 01:11:49,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 01:11:49,627 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 11.777777777777779) internal successors, (106), 10 states have internal predecessors, (106), 7 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) Word has length 215 [2023-11-29 01:11:49,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:11:49,639 INFO L225 Difference]: With dead ends: 10001 [2023-11-29 01:11:49,639 INFO L226 Difference]: Without dead ends: 10000 [2023-11-29 01:11:49,641 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2023-11-29 01:11:49,642 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 31 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 680 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:11:49,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 348 Invalid, 680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 680 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 01:11:49,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10000 states. [2023-11-29 01:11:50,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10000 to 9607. [2023-11-29 01:11:50,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9607 states, 9024 states have (on average 1.0700354609929077) internal successors, (9656), 9027 states have internal predecessors, (9656), 577 states have call successors, (577), 2 states have call predecessors, (577), 2 states have return successors, (577), 577 states have call predecessors, (577), 577 states have call successors, (577) [2023-11-29 01:11:50,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9607 states to 9607 states and 10810 transitions. [2023-11-29 01:11:50,444 INFO L78 Accepts]: Start accepts. Automaton has 9607 states and 10810 transitions. Word has length 215 [2023-11-29 01:11:50,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:11:50,444 INFO L495 AbstractCegarLoop]: Abstraction has 9607 states and 10810 transitions. [2023-11-29 01:11:50,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 11.777777777777779) internal successors, (106), 10 states have internal predecessors, (106), 7 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2023-11-29 01:11:50,445 INFO L276 IsEmpty]: Start isEmpty. Operand 9607 states and 10810 transitions. [2023-11-29 01:11:50,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2023-11-29 01:11:50,448 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:11:50,449 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:11:50,455 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2023-11-29 01:11:50,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2023-11-29 01:11:50,649 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 01:11:50,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:11:50,650 INFO L85 PathProgramCache]: Analyzing trace with hash -650607649, now seen corresponding path program 3 times [2023-11-29 01:11:50,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:11:50,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632306485] [2023-11-29 01:11:50,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:11:50,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:11:50,664 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:11:50,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [944945996] [2023-11-29 01:11:50,665 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 01:11:50,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:11:50,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:11:50,666 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:11:50,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2023-11-29 01:11:50,782 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2023-11-29 01:11:50,783 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:11:50,785 INFO L262 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 01:11:50,790 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:11:51,040 INFO L134 CoverageAnalysis]: Checked inductivity of 1054 backedges. 0 proven. 830 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2023-11-29 01:11:51,040 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:11:51,425 INFO L134 CoverageAnalysis]: Checked inductivity of 1054 backedges. 0 proven. 830 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2023-11-29 01:11:51,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:11:51,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632306485] [2023-11-29 01:11:51,426 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:11:51,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [944945996] [2023-11-29 01:11:51,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [944945996] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:11:51,426 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:11:51,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2023-11-29 01:11:51,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916142727] [2023-11-29 01:11:51,427 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:11:51,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-29 01:11:51,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:11:51,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-29 01:11:51,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2023-11-29 01:11:51,430 INFO L87 Difference]: Start difference. First operand 9607 states and 10810 transitions. Second operand has 24 states, 23 states have (on average 14.304347826086957) internal successors, (329), 24 states have internal predecessors, (329), 23 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 23 states have call predecessors, (24), 23 states have call successors, (24) [2023-11-29 01:11:52,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:11:52,978 INFO L93 Difference]: Finished difference Result 14791 states and 17050 transitions. [2023-11-29 01:11:52,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-29 01:11:52,979 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 14.304347826086957) internal successors, (329), 24 states have internal predecessors, (329), 23 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 23 states have call predecessors, (24), 23 states have call successors, (24) Word has length 227 [2023-11-29 01:11:52,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:11:52,999 INFO L225 Difference]: With dead ends: 14791 [2023-11-29 01:11:52,999 INFO L226 Difference]: Without dead ends: 14790 [2023-11-29 01:11:53,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 452 GetRequests, 430 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2023-11-29 01:11:53,003 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 203 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:11:53,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 267 Invalid, 380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 01:11:53,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14790 states. [2023-11-29 01:11:54,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14790 to 13974. [2023-11-29 01:11:54,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13974 states, 13118 states have (on average 1.0888092697057479) internal successors, (14283), 13121 states have internal predecessors, (14283), 850 states have call successors, (850), 2 states have call predecessors, (850), 2 states have return successors, (850), 850 states have call predecessors, (850), 850 states have call successors, (850) [2023-11-29 01:11:54,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13974 states to 13974 states and 15983 transitions. [2023-11-29 01:11:54,379 INFO L78 Accepts]: Start accepts. Automaton has 13974 states and 15983 transitions. Word has length 227 [2023-11-29 01:11:54,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:11:54,379 INFO L495 AbstractCegarLoop]: Abstraction has 13974 states and 15983 transitions. [2023-11-29 01:11:54,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 14.304347826086957) internal successors, (329), 24 states have internal predecessors, (329), 23 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 23 states have call predecessors, (24), 23 states have call successors, (24) [2023-11-29 01:11:54,380 INFO L276 IsEmpty]: Start isEmpty. Operand 13974 states and 15983 transitions. [2023-11-29 01:11:54,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2023-11-29 01:11:54,384 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:11:54,384 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 9, 9, 9, 9, 9, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:11:54,391 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2023-11-29 01:11:54,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-11-29 01:11:54,585 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 01:11:54,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:11:54,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1020077166, now seen corresponding path program 13 times [2023-11-29 01:11:54,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:11:54,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167237651] [2023-11-29 01:11:54,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:11:54,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:11:54,601 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:11:54,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [190969541] [2023-11-29 01:11:54,602 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 01:11:54,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:11:54,602 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:11:54,603 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:11:54,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2023-11-29 01:11:54,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:11:54,691 INFO L262 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 01:11:54,694 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:11:55,071 INFO L134 CoverageAnalysis]: Checked inductivity of 1065 backedges. 257 proven. 584 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2023-11-29 01:11:55,072 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:11:55,375 INFO L134 CoverageAnalysis]: Checked inductivity of 1065 backedges. 257 proven. 584 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2023-11-29 01:11:55,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:11:55,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167237651] [2023-11-29 01:11:55,376 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:11:55,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [190969541] [2023-11-29 01:11:55,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [190969541] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:11:55,376 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:11:55,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 19 [2023-11-29 01:11:55,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385410530] [2023-11-29 01:11:55,377 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:11:55,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-29 01:11:55,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:11:55,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-29 01:11:55,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2023-11-29 01:11:55,378 INFO L87 Difference]: Start difference. First operand 13974 states and 15983 transitions. Second operand has 19 states, 19 states have (on average 13.157894736842104) internal successors, (250), 19 states have internal predecessors, (250), 17 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 17 states have call predecessors, (18), 17 states have call successors, (18) [2023-11-29 01:11:57,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:11:57,214 INFO L93 Difference]: Finished difference Result 27084 states and 31355 transitions. [2023-11-29 01:11:57,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 01:11:57,215 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 13.157894736842104) internal successors, (250), 19 states have internal predecessors, (250), 17 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 17 states have call predecessors, (18), 17 states have call successors, (18) Word has length 235 [2023-11-29 01:11:57,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:11:57,235 INFO L225 Difference]: With dead ends: 27084 [2023-11-29 01:11:57,235 INFO L226 Difference]: Without dead ends: 20705 [2023-11-29 01:11:57,243 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 474 GetRequests, 444 SyntacticMatches, 7 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=159, Invalid=441, Unknown=0, NotChecked=0, Total=600 [2023-11-29 01:11:57,244 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 77 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 758 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 457 SdHoareTripleChecker+Invalid, 760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 758 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 01:11:57,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 457 Invalid, 760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 758 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 01:11:57,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20705 states. [2023-11-29 01:11:58,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20705 to 15523. [2023-11-29 01:11:58,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15523 states, 14572 states have (on average 1.0853692012077958) internal successors, (15816), 14575 states have internal predecessors, (15816), 945 states have call successors, (945), 2 states have call predecessors, (945), 2 states have return successors, (945), 945 states have call predecessors, (945), 945 states have call successors, (945) [2023-11-29 01:11:58,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15523 states to 15523 states and 17706 transitions. [2023-11-29 01:11:58,648 INFO L78 Accepts]: Start accepts. Automaton has 15523 states and 17706 transitions. Word has length 235 [2023-11-29 01:11:58,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:11:58,648 INFO L495 AbstractCegarLoop]: Abstraction has 15523 states and 17706 transitions. [2023-11-29 01:11:58,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 13.157894736842104) internal successors, (250), 19 states have internal predecessors, (250), 17 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 17 states have call predecessors, (18), 17 states have call successors, (18) [2023-11-29 01:11:58,649 INFO L276 IsEmpty]: Start isEmpty. Operand 15523 states and 17706 transitions. [2023-11-29 01:11:58,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2023-11-29 01:11:58,654 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:11:58,654 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:11:58,659 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2023-11-29 01:11:58,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-11-29 01:11:58,855 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 01:11:58,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:11:58,856 INFO L85 PathProgramCache]: Analyzing trace with hash 529733634, now seen corresponding path program 14 times [2023-11-29 01:11:58,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:11:58,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380373215] [2023-11-29 01:11:58,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:11:58,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:11:58,871 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:11:58,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1949804716] [2023-11-29 01:11:58,871 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:11:58,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:11:58,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:11:58,873 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:11:58,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2023-11-29 01:11:58,963 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 01:11:58,964 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:11:58,965 INFO L262 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 01:11:58,970 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:11:59,312 INFO L134 CoverageAnalysis]: Checked inductivity of 1025 backedges. 465 proven. 252 refuted. 0 times theorem prover too weak. 308 trivial. 0 not checked. [2023-11-29 01:11:59,312 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:11:59,569 INFO L134 CoverageAnalysis]: Checked inductivity of 1025 backedges. 189 proven. 528 refuted. 0 times theorem prover too weak. 308 trivial. 0 not checked. [2023-11-29 01:11:59,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:11:59,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380373215] [2023-11-29 01:11:59,570 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:11:59,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1949804716] [2023-11-29 01:11:59,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1949804716] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:11:59,570 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:11:59,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2023-11-29 01:11:59,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145262853] [2023-11-29 01:11:59,571 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:11:59,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 01:11:59,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:11:59,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 01:11:59,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=214, Unknown=0, NotChecked=0, Total=306 [2023-11-29 01:11:59,573 INFO L87 Difference]: Start difference. First operand 15523 states and 17706 transitions. Second operand has 18 states, 18 states have (on average 14.222222222222221) internal successors, (256), 18 states have internal predecessors, (256), 17 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 17 states have call predecessors, (18), 17 states have call successors, (18) [2023-11-29 01:12:02,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:12:02,445 INFO L93 Difference]: Finished difference Result 40276 states and 46841 transitions. [2023-11-29 01:12:02,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-11-29 01:12:02,446 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 14.222222222222221) internal successors, (256), 18 states have internal predecessors, (256), 17 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 17 states have call predecessors, (18), 17 states have call successors, (18) Word has length 235 [2023-11-29 01:12:02,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:12:02,478 INFO L225 Difference]: With dead ends: 40276 [2023-11-29 01:12:02,478 INFO L226 Difference]: Without dead ends: 28992 [2023-11-29 01:12:02,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 488 GetRequests, 452 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=386, Invalid=1020, Unknown=0, NotChecked=0, Total=1406 [2023-11-29 01:12:02,492 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 134 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 570 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 01:12:02,492 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 342 Invalid, 598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 570 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 01:12:02,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28992 states. [2023-11-29 01:12:03,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28992 to 13137. [2023-11-29 01:12:03,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13137 states, 12319 states have (on average 1.089211786670996) internal successors, (13418), 12322 states have internal predecessors, (13418), 812 states have call successors, (812), 2 states have call predecessors, (812), 2 states have return successors, (812), 812 states have call predecessors, (812), 812 states have call successors, (812) [2023-11-29 01:12:03,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13137 states to 13137 states and 15042 transitions. [2023-11-29 01:12:03,778 INFO L78 Accepts]: Start accepts. Automaton has 13137 states and 15042 transitions. Word has length 235 [2023-11-29 01:12:03,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:12:03,778 INFO L495 AbstractCegarLoop]: Abstraction has 13137 states and 15042 transitions. [2023-11-29 01:12:03,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 14.222222222222221) internal successors, (256), 18 states have internal predecessors, (256), 17 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 17 states have call predecessors, (18), 17 states have call successors, (18) [2023-11-29 01:12:03,778 INFO L276 IsEmpty]: Start isEmpty. Operand 13137 states and 15042 transitions. [2023-11-29 01:12:03,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2023-11-29 01:12:03,782 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:12:03,782 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 10, 10, 10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:12:03,787 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2023-11-29 01:12:03,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-11-29 01:12:03,983 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 01:12:03,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:12:03,983 INFO L85 PathProgramCache]: Analyzing trace with hash -1980277955, now seen corresponding path program 15 times [2023-11-29 01:12:03,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:12:03,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362629030] [2023-11-29 01:12:03,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:12:03,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:12:03,995 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:12:03,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [365131806] [2023-11-29 01:12:03,995 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 01:12:03,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:12:03,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:12:03,996 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:12:03,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2023-11-29 01:12:04,095 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2023-11-29 01:12:04,096 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:12:04,097 INFO L262 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-29 01:12:04,101 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:12:04,537 INFO L134 CoverageAnalysis]: Checked inductivity of 1280 backedges. 0 proven. 792 refuted. 0 times theorem prover too weak. 488 trivial. 0 not checked. [2023-11-29 01:12:04,537 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:12:05,046 INFO L134 CoverageAnalysis]: Checked inductivity of 1280 backedges. 0 proven. 792 refuted. 0 times theorem prover too weak. 488 trivial. 0 not checked. [2023-11-29 01:12:05,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:12:05,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362629030] [2023-11-29 01:12:05,046 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:12:05,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [365131806] [2023-11-29 01:12:05,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [365131806] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:12:05,047 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:12:05,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2023-11-29 01:12:05,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910778727] [2023-11-29 01:12:05,047 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:12:05,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-29 01:12:05,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:12:05,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-29 01:12:05,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2023-11-29 01:12:05,049 INFO L87 Difference]: Start difference. First operand 13137 states and 15042 transitions. Second operand has 20 states, 19 states have (on average 12.368421052631579) internal successors, (235), 20 states have internal predecessors, (235), 15 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 15 states have call predecessors, (16), 15 states have call successors, (16) [2023-11-29 01:12:10,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:12:10,388 INFO L93 Difference]: Finished difference Result 15052 states and 17201 transitions. [2023-11-29 01:12:10,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2023-11-29 01:12:10,388 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 12.368421052631579) internal successors, (235), 20 states have internal predecessors, (235), 15 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 15 states have call predecessors, (16), 15 states have call successors, (16) Word has length 255 [2023-11-29 01:12:10,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:12:10,405 INFO L225 Difference]: With dead ends: 15052 [2023-11-29 01:12:10,405 INFO L226 Difference]: Without dead ends: 15050 [2023-11-29 01:12:10,410 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 565 GetRequests, 490 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1834 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1348, Invalid=4504, Unknown=0, NotChecked=0, Total=5852 [2023-11-29 01:12:10,410 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 542 mSDsluCounter, 615 mSDsCounter, 0 mSdLazyCounter, 1563 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 544 SdHoareTripleChecker+Valid, 679 SdHoareTripleChecker+Invalid, 1665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1563 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-29 01:12:10,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [544 Valid, 679 Invalid, 1665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 1563 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-29 01:12:10,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15050 states. [2023-11-29 01:12:11,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15050 to 14307. [2023-11-29 01:12:11,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14307 states, 13416 states have (on average 1.0906380441264163) internal successors, (14632), 13419 states have internal predecessors, (14632), 885 states have call successors, (885), 2 states have call predecessors, (885), 2 states have return successors, (885), 885 states have call predecessors, (885), 885 states have call successors, (885) [2023-11-29 01:12:11,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14307 states to 14307 states and 16402 transitions. [2023-11-29 01:12:11,653 INFO L78 Accepts]: Start accepts. Automaton has 14307 states and 16402 transitions. Word has length 255 [2023-11-29 01:12:11,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:12:11,653 INFO L495 AbstractCegarLoop]: Abstraction has 14307 states and 16402 transitions. [2023-11-29 01:12:11,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 12.368421052631579) internal successors, (235), 20 states have internal predecessors, (235), 15 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 15 states have call predecessors, (16), 15 states have call successors, (16) [2023-11-29 01:12:11,654 INFO L276 IsEmpty]: Start isEmpty. Operand 14307 states and 16402 transitions. [2023-11-29 01:12:11,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2023-11-29 01:12:11,658 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:12:11,659 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 10, 10, 10, 10, 10, 5, 5, 5, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:12:11,663 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2023-11-29 01:12:11,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-11-29 01:12:11,859 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 01:12:11,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:12:11,859 INFO L85 PathProgramCache]: Analyzing trace with hash -483420408, now seen corresponding path program 16 times [2023-11-29 01:12:11,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:12:11,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057868927] [2023-11-29 01:12:11,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:12:11,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:12:11,870 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:12:11,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [157489908] [2023-11-29 01:12:11,871 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 01:12:11,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:12:11,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:12:11,872 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:12:11,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2023-11-29 01:12:11,968 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 01:12:11,968 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:12:11,970 INFO L262 TraceCheckSpWp]: Trace formula consists of 487 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 01:12:11,974 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:12:12,318 INFO L134 CoverageAnalysis]: Checked inductivity of 1949 backedges. 0 proven. 1365 refuted. 0 times theorem prover too weak. 584 trivial. 0 not checked. [2023-11-29 01:12:12,319 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:12:12,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:12:12,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057868927] [2023-11-29 01:12:12,457 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:12:12,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [157489908] [2023-11-29 01:12:12,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [157489908] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:12:12,458 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:12:12,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2023-11-29 01:12:12,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749961758] [2023-11-29 01:12:12,458 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 01:12:12,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 01:12:12,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:12:12,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 01:12:12,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2023-11-29 01:12:12,460 INFO L87 Difference]: Start difference. First operand 14307 states and 16402 transitions. Second operand has 11 states, 10 states have (on average 13.6) internal successors, (136), 11 states have internal predecessors, (136), 8 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2023-11-29 01:12:15,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:12:15,215 INFO L93 Difference]: Finished difference Result 15969 states and 18235 transitions. [2023-11-29 01:12:15,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-11-29 01:12:15,216 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 13.6) internal successors, (136), 11 states have internal predecessors, (136), 8 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) Word has length 315 [2023-11-29 01:12:15,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:12:15,233 INFO L225 Difference]: With dead ends: 15969 [2023-11-29 01:12:15,233 INFO L226 Difference]: Without dead ends: 15513 [2023-11-29 01:12:15,237 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 314 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=306, Invalid=1176, Unknown=0, NotChecked=0, Total=1482 [2023-11-29 01:12:15,237 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 381 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 662 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 382 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 01:12:15,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [382 Valid, 337 Invalid, 694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 662 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 01:12:15,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15513 states. [2023-11-29 01:12:16,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15513 to 14266. [2023-11-29 01:12:16,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14266 states, 13377 states have (on average 1.0906032742767438) internal successors, (14589), 13380 states have internal predecessors, (14589), 883 states have call successors, (883), 2 states have call predecessors, (883), 2 states have return successors, (883), 883 states have call predecessors, (883), 883 states have call successors, (883) [2023-11-29 01:12:16,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14266 states to 14266 states and 16355 transitions. [2023-11-29 01:12:16,474 INFO L78 Accepts]: Start accepts. Automaton has 14266 states and 16355 transitions. Word has length 315 [2023-11-29 01:12:16,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:12:16,475 INFO L495 AbstractCegarLoop]: Abstraction has 14266 states and 16355 transitions. [2023-11-29 01:12:16,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 13.6) internal successors, (136), 11 states have internal predecessors, (136), 8 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2023-11-29 01:12:16,475 INFO L276 IsEmpty]: Start isEmpty. Operand 14266 states and 16355 transitions. [2023-11-29 01:12:16,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2023-11-29 01:12:16,481 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:12:16,482 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:12:16,488 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2023-11-29 01:12:16,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:12:16,682 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 01:12:16,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:12:16,683 INFO L85 PathProgramCache]: Analyzing trace with hash 127968034, now seen corresponding path program 4 times [2023-11-29 01:12:16,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:12:16,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337566109] [2023-11-29 01:12:16,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:12:16,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:12:16,696 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:12:16,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [429109528] [2023-11-29 01:12:16,696 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 01:12:16,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:12:16,696 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:12:16,697 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:12:16,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2023-11-29 01:12:16,815 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 01:12:16,815 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:12:16,818 INFO L262 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-29 01:12:16,822 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:12:17,377 INFO L134 CoverageAnalysis]: Checked inductivity of 2123 backedges. 81 proven. 1726 refuted. 0 times theorem prover too weak. 316 trivial. 0 not checked. [2023-11-29 01:12:17,378 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:12:18,351 INFO L134 CoverageAnalysis]: Checked inductivity of 2123 backedges. 81 proven. 1726 refuted. 0 times theorem prover too weak. 316 trivial. 0 not checked. [2023-11-29 01:12:18,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:12:18,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337566109] [2023-11-29 01:12:18,351 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:12:18,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [429109528] [2023-11-29 01:12:18,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [429109528] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:12:18,352 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:12:18,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 42 [2023-11-29 01:12:18,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530164456] [2023-11-29 01:12:18,352 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:12:18,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-11-29 01:12:18,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:12:18,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-11-29 01:12:18,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=476, Invalid=1330, Unknown=0, NotChecked=0, Total=1806 [2023-11-29 01:12:18,356 INFO L87 Difference]: Start difference. First operand 14266 states and 16355 transitions. Second operand has 43 states, 42 states have (on average 11.285714285714286) internal successors, (474), 43 states have internal predecessors, (474), 31 states have call successors, (32), 1 states have call predecessors, (32), 2 states have return successors, (32), 31 states have call predecessors, (32), 31 states have call successors, (32) [2023-11-29 01:12:22,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:12:22,672 INFO L93 Difference]: Finished difference Result 16098 states and 18439 transitions. [2023-11-29 01:12:22,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2023-11-29 01:12:22,673 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 42 states have (on average 11.285714285714286) internal successors, (474), 43 states have internal predecessors, (474), 31 states have call successors, (32), 1 states have call predecessors, (32), 2 states have return successors, (32), 31 states have call predecessors, (32), 31 states have call successors, (32) Word has length 317 [2023-11-29 01:12:22,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:12:22,695 INFO L225 Difference]: With dead ends: 16098 [2023-11-29 01:12:22,695 INFO L226 Difference]: Without dead ends: 16097 [2023-11-29 01:12:22,703 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 704 GetRequests, 591 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3904 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=3956, Invalid=9154, Unknown=0, NotChecked=0, Total=13110 [2023-11-29 01:12:22,703 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 422 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 926 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 423 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 988 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 926 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 01:12:22,704 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [423 Valid, 170 Invalid, 988 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 926 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-29 01:12:22,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16097 states. [2023-11-29 01:12:24,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16097 to 15305. [2023-11-29 01:12:24,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15305 states, 14351 states have (on average 1.0877987596683159) internal successors, (15611), 14354 states have internal predecessors, (15611), 948 states have call successors, (948), 2 states have call predecessors, (948), 2 states have return successors, (948), 948 states have call predecessors, (948), 948 states have call successors, (948) [2023-11-29 01:12:24,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15305 states to 15305 states and 17507 transitions. [2023-11-29 01:12:24,150 INFO L78 Accepts]: Start accepts. Automaton has 15305 states and 17507 transitions. Word has length 317 [2023-11-29 01:12:24,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:12:24,150 INFO L495 AbstractCegarLoop]: Abstraction has 15305 states and 17507 transitions. [2023-11-29 01:12:24,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 42 states have (on average 11.285714285714286) internal successors, (474), 43 states have internal predecessors, (474), 31 states have call successors, (32), 1 states have call predecessors, (32), 2 states have return successors, (32), 31 states have call predecessors, (32), 31 states have call successors, (32) [2023-11-29 01:12:24,150 INFO L276 IsEmpty]: Start isEmpty. Operand 15305 states and 17507 transitions. [2023-11-29 01:12:24,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2023-11-29 01:12:24,155 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:12:24,155 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 13, 13, 13, 13, 13, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:12:24,161 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2023-11-29 01:12:24,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:12:24,356 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 01:12:24,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:12:24,357 INFO L85 PathProgramCache]: Analyzing trace with hash -281378708, now seen corresponding path program 5 times [2023-11-29 01:12:24,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:12:24,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339851514] [2023-11-29 01:12:24,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:12:24,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:12:24,371 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:12:24,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [134884070] [2023-11-29 01:12:24,371 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 01:12:24,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:12:24,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:12:24,372 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:12:24,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2023-11-29 01:12:24,509 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2023-11-29 01:12:24,509 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:12:24,511 INFO L262 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 01:12:24,515 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:12:24,982 INFO L134 CoverageAnalysis]: Checked inductivity of 2075 backedges. 885 proven. 844 refuted. 0 times theorem prover too weak. 346 trivial. 0 not checked. [2023-11-29 01:12:24,982 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:12:25,376 INFO L134 CoverageAnalysis]: Checked inductivity of 2075 backedges. 781 proven. 844 refuted. 0 times theorem prover too weak. 450 trivial. 0 not checked. [2023-11-29 01:12:25,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:12:25,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339851514] [2023-11-29 01:12:25,376 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:12:25,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [134884070] [2023-11-29 01:12:25,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [134884070] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:12:25,376 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:12:25,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 23 [2023-11-29 01:12:25,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689664906] [2023-11-29 01:12:25,377 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:12:25,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-29 01:12:25,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:12:25,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-29 01:12:25,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=371, Unknown=0, NotChecked=0, Total=506 [2023-11-29 01:12:25,379 INFO L87 Difference]: Start difference. First operand 15305 states and 17507 transitions. Second operand has 23 states, 23 states have (on average 14.173913043478262) internal successors, (326), 23 states have internal predecessors, (326), 22 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 22 states have call predecessors, (24), 22 states have call successors, (24) [2023-11-29 01:12:28,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:12:28,639 INFO L93 Difference]: Finished difference Result 28999 states and 33499 transitions. [2023-11-29 01:12:28,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-11-29 01:12:28,640 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 14.173913043478262) internal successors, (326), 23 states have internal predecessors, (326), 22 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 22 states have call predecessors, (24), 22 states have call successors, (24) Word has length 317 [2023-11-29 01:12:28,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:12:28,664 INFO L225 Difference]: With dead ends: 28999 [2023-11-29 01:12:28,664 INFO L226 Difference]: Without dead ends: 21716 [2023-11-29 01:12:28,677 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 664 GetRequests, 604 SyntacticMatches, 7 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 786 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=697, Invalid=2273, Unknown=0, NotChecked=0, Total=2970 [2023-11-29 01:12:28,677 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 270 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 979 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 560 SdHoareTripleChecker+Invalid, 1014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 979 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:12:28,678 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 560 Invalid, 1014 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 979 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-29 01:12:28,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21716 states. [2023-11-29 01:12:30,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21716 to 15850. [2023-11-29 01:12:30,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15850 states, 14861 states have (on average 1.083305295740529) internal successors, (16099), 14864 states have internal predecessors, (16099), 983 states have call successors, (983), 2 states have call predecessors, (983), 2 states have return successors, (983), 983 states have call predecessors, (983), 983 states have call successors, (983) [2023-11-29 01:12:30,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15850 states to 15850 states and 18065 transitions. [2023-11-29 01:12:30,236 INFO L78 Accepts]: Start accepts. Automaton has 15850 states and 18065 transitions. Word has length 317 [2023-11-29 01:12:30,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:12:30,236 INFO L495 AbstractCegarLoop]: Abstraction has 15850 states and 18065 transitions. [2023-11-29 01:12:30,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 14.173913043478262) internal successors, (326), 23 states have internal predecessors, (326), 22 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 22 states have call predecessors, (24), 22 states have call successors, (24) [2023-11-29 01:12:30,236 INFO L276 IsEmpty]: Start isEmpty. Operand 15850 states and 18065 transitions. [2023-11-29 01:12:30,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2023-11-29 01:12:30,240 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:12:30,240 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 13, 13, 13, 13, 13, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:12:30,245 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2023-11-29 01:12:30,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2023-11-29 01:12:30,441 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 01:12:30,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:12:30,441 INFO L85 PathProgramCache]: Analyzing trace with hash 1672830060, now seen corresponding path program 6 times [2023-11-29 01:12:30,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:12:30,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979950035] [2023-11-29 01:12:30,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:12:30,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:12:30,455 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:12:30,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [722739172] [2023-11-29 01:12:30,456 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 01:12:30,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:12:30,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:12:30,457 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:12:30,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2023-11-29 01:12:30,583 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2023-11-29 01:12:30,583 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:12:30,586 INFO L262 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-29 01:12:30,589 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:12:30,981 INFO L134 CoverageAnalysis]: Checked inductivity of 2075 backedges. 565 proven. 940 refuted. 0 times theorem prover too weak. 570 trivial. 0 not checked. [2023-11-29 01:12:30,981 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:12:31,302 INFO L134 CoverageAnalysis]: Checked inductivity of 2075 backedges. 123 proven. 1382 refuted. 0 times theorem prover too weak. 570 trivial. 0 not checked. [2023-11-29 01:12:31,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:12:31,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979950035] [2023-11-29 01:12:31,302 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:12:31,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [722739172] [2023-11-29 01:12:31,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [722739172] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:12:31,302 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:12:31,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 18 [2023-11-29 01:12:31,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147036079] [2023-11-29 01:12:31,303 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:12:31,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 01:12:31,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:12:31,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 01:12:31,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2023-11-29 01:12:31,305 INFO L87 Difference]: Start difference. First operand 15850 states and 18065 transitions. Second operand has 18 states, 18 states have (on average 14.222222222222221) internal successors, (256), 18 states have internal predecessors, (256), 17 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 17 states have call predecessors, (18), 17 states have call successors, (18) [2023-11-29 01:12:33,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:12:33,918 INFO L93 Difference]: Finished difference Result 16319 states and 18553 transitions. [2023-11-29 01:12:33,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-29 01:12:33,919 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 14.222222222222221) internal successors, (256), 18 states have internal predecessors, (256), 17 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 17 states have call predecessors, (18), 17 states have call successors, (18) Word has length 317 [2023-11-29 01:12:33,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:12:33,936 INFO L225 Difference]: With dead ends: 16319 [2023-11-29 01:12:33,936 INFO L226 Difference]: Without dead ends: 15092 [2023-11-29 01:12:33,941 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 642 GetRequests, 616 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=668, Unknown=0, NotChecked=0, Total=756 [2023-11-29 01:12:33,942 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 85 mSDsluCounter, 1169 mSDsCounter, 0 mSdLazyCounter, 2506 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 1324 SdHoareTripleChecker+Invalid, 2522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 2506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:12:33,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 1324 Invalid, 2522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 2506 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-29 01:12:33,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15092 states. [2023-11-29 01:12:35,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15092 to 15069. [2023-11-29 01:12:35,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15069 states, 14126 states have (on average 1.0826136202746708) internal successors, (15293), 14129 states have internal predecessors, (15293), 937 states have call successors, (937), 2 states have call predecessors, (937), 2 states have return successors, (937), 937 states have call predecessors, (937), 937 states have call successors, (937) [2023-11-29 01:12:35,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15069 states to 15069 states and 17167 transitions. [2023-11-29 01:12:35,293 INFO L78 Accepts]: Start accepts. Automaton has 15069 states and 17167 transitions. Word has length 317 [2023-11-29 01:12:35,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:12:35,294 INFO L495 AbstractCegarLoop]: Abstraction has 15069 states and 17167 transitions. [2023-11-29 01:12:35,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 14.222222222222221) internal successors, (256), 18 states have internal predecessors, (256), 17 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 17 states have call predecessors, (18), 17 states have call successors, (18) [2023-11-29 01:12:35,294 INFO L276 IsEmpty]: Start isEmpty. Operand 15069 states and 17167 transitions. [2023-11-29 01:12:35,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2023-11-29 01:12:35,298 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:12:35,298 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 12, 12, 12, 12, 12, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:12:35,305 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2023-11-29 01:12:35,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2023-11-29 01:12:35,499 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 01:12:35,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:12:35,499 INFO L85 PathProgramCache]: Analyzing trace with hash 1387060662, now seen corresponding path program 7 times [2023-11-29 01:12:35,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:12:35,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81240720] [2023-11-29 01:12:35,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:12:35,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:12:35,515 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:12:35,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [219353830] [2023-11-29 01:12:35,516 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 01:12:35,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:12:35,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:12:35,517 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:12:35,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2023-11-29 01:12:35,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:12:35,644 INFO L262 TraceCheckSpWp]: Trace formula consists of 483 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-29 01:12:35,648 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:12:36,157 INFO L134 CoverageAnalysis]: Checked inductivity of 2035 backedges. 42 proven. 1611 refuted. 0 times theorem prover too weak. 382 trivial. 0 not checked. [2023-11-29 01:12:36,157 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:12:36,943 INFO L134 CoverageAnalysis]: Checked inductivity of 2035 backedges. 42 proven. 1611 refuted. 0 times theorem prover too weak. 382 trivial. 0 not checked. [2023-11-29 01:12:36,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:12:36,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81240720] [2023-11-29 01:12:36,944 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:12:36,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [219353830] [2023-11-29 01:12:36,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [219353830] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:12:36,944 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:12:36,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 38 [2023-11-29 01:12:36,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619814795] [2023-11-29 01:12:36,944 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:12:36,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-11-29 01:12:36,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:12:36,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-11-29 01:12:36,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=518, Invalid=964, Unknown=0, NotChecked=0, Total=1482 [2023-11-29 01:12:36,946 INFO L87 Difference]: Start difference. First operand 15069 states and 17167 transitions. Second operand has 39 states, 38 states have (on average 12.473684210526315) internal successors, (474), 39 states have internal predecessors, (474), 31 states have call successors, (32), 1 states have call predecessors, (32), 2 states have return successors, (32), 31 states have call predecessors, (32), 31 states have call successors, (32) [2023-11-29 01:12:42,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:12:42,671 INFO L93 Difference]: Finished difference Result 27499 states and 31002 transitions. [2023-11-29 01:12:42,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2023-11-29 01:12:42,672 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 38 states have (on average 12.473684210526315) internal successors, (474), 39 states have internal predecessors, (474), 31 states have call successors, (32), 1 states have call predecessors, (32), 2 states have return successors, (32), 31 states have call predecessors, (32), 31 states have call successors, (32) Word has length 317 [2023-11-29 01:12:42,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:12:42,705 INFO L225 Difference]: With dead ends: 27499 [2023-11-29 01:12:42,705 INFO L226 Difference]: Without dead ends: 27498 [2023-11-29 01:12:42,714 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 708 GetRequests, 595 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3904 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=4259, Invalid=8851, Unknown=0, NotChecked=0, Total=13110 [2023-11-29 01:12:42,715 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 531 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 835 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 532 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 912 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 835 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 01:12:42,715 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [532 Valid, 201 Invalid, 912 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 835 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-29 01:12:42,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27498 states. [2023-11-29 01:12:45,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27498 to 26641. [2023-11-29 01:12:45,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26641 states, 25018 states have (on average 1.0551203133743705) internal successors, (26397), 25021 states have internal predecessors, (26397), 1617 states have call successors, (1617), 2 states have call predecessors, (1617), 2 states have return successors, (1617), 1617 states have call predecessors, (1617), 1617 states have call successors, (1617) [2023-11-29 01:12:45,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26641 states to 26641 states and 29631 transitions. [2023-11-29 01:12:45,746 INFO L78 Accepts]: Start accepts. Automaton has 26641 states and 29631 transitions. Word has length 317 [2023-11-29 01:12:45,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:12:45,746 INFO L495 AbstractCegarLoop]: Abstraction has 26641 states and 29631 transitions. [2023-11-29 01:12:45,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 38 states have (on average 12.473684210526315) internal successors, (474), 39 states have internal predecessors, (474), 31 states have call successors, (32), 1 states have call predecessors, (32), 2 states have return successors, (32), 31 states have call predecessors, (32), 31 states have call successors, (32) [2023-11-29 01:12:45,747 INFO L276 IsEmpty]: Start isEmpty. Operand 26641 states and 29631 transitions. [2023-11-29 01:12:45,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2023-11-29 01:12:45,754 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:12:45,755 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 12, 12, 12, 12, 12, 6, 6, 6, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:12:45,760 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2023-11-29 01:12:45,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2023-11-29 01:12:45,955 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 01:12:45,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:12:45,956 INFO L85 PathProgramCache]: Analyzing trace with hash -1107609921, now seen corresponding path program 17 times [2023-11-29 01:12:45,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:12:45,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103321478] [2023-11-29 01:12:45,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:12:45,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:12:45,973 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:12:45,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [989410848] [2023-11-29 01:12:45,973 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 01:12:45,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:12:45,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:12:45,975 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:12:45,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2023-11-29 01:12:46,133 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2023-11-29 01:12:46,133 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:12:46,136 INFO L262 TraceCheckSpWp]: Trace formula consists of 574 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-29 01:12:46,141 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:12:46,851 INFO L134 CoverageAnalysis]: Checked inductivity of 2830 backedges. 0 proven. 2014 refuted. 0 times theorem prover too weak. 816 trivial. 0 not checked. [2023-11-29 01:12:46,851 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:12:48,348 INFO L134 CoverageAnalysis]: Checked inductivity of 2830 backedges. 0 proven. 2014 refuted. 0 times theorem prover too weak. 816 trivial. 0 not checked. [2023-11-29 01:12:48,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:12:48,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103321478] [2023-11-29 01:12:48,349 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:12:48,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [989410848] [2023-11-29 01:12:48,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [989410848] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:12:48,349 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:12:48,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2023-11-29 01:12:48,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19253754] [2023-11-29 01:12:48,350 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:12:48,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-29 01:12:48,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:12:48,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-29 01:12:48,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=365, Unknown=0, NotChecked=0, Total=462 [2023-11-29 01:12:48,352 INFO L87 Difference]: Start difference. First operand 26641 states and 29631 transitions. Second operand has 22 states, 21 states have (on average 14.523809523809524) internal successors, (305), 22 states have internal predecessors, (305), 17 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 17 states have call predecessors, (18), 17 states have call successors, (18) [2023-11-29 01:12:54,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:12:54,748 INFO L93 Difference]: Finished difference Result 28468 states and 31627 transitions. [2023-11-29 01:12:54,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2023-11-29 01:12:54,748 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 14.523809523809524) internal successors, (305), 22 states have internal predecessors, (305), 17 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 17 states have call predecessors, (18), 17 states have call successors, (18) Word has length 375 [2023-11-29 01:12:54,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:12:54,779 INFO L225 Difference]: With dead ends: 28468 [2023-11-29 01:12:54,779 INFO L226 Difference]: Without dead ends: 28467 [2023-11-29 01:12:54,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 801 GetRequests, 728 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1488 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1279, Invalid=4271, Unknown=0, NotChecked=0, Total=5550 [2023-11-29 01:12:54,784 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 412 mSDsluCounter, 749 mSDsCounter, 0 mSdLazyCounter, 1791 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 827 SdHoareTripleChecker+Invalid, 1864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1791 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:12:54,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [413 Valid, 827 Invalid, 1864 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 1791 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-29 01:12:54,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28467 states. [2023-11-29 01:12:57,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28467 to 26737. [2023-11-29 01:12:57,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26737 states, 25108 states have (on average 1.054683766130317) internal successors, (26481), 25111 states have internal predecessors, (26481), 1623 states have call successors, (1623), 2 states have call predecessors, (1623), 2 states have return successors, (1623), 1623 states have call predecessors, (1623), 1623 states have call successors, (1623) [2023-11-29 01:12:58,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26737 states to 26737 states and 29727 transitions. [2023-11-29 01:12:58,028 INFO L78 Accepts]: Start accepts. Automaton has 26737 states and 29727 transitions. Word has length 375 [2023-11-29 01:12:58,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:12:58,028 INFO L495 AbstractCegarLoop]: Abstraction has 26737 states and 29727 transitions. [2023-11-29 01:12:58,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 14.523809523809524) internal successors, (305), 22 states have internal predecessors, (305), 17 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 17 states have call predecessors, (18), 17 states have call successors, (18) [2023-11-29 01:12:58,029 INFO L276 IsEmpty]: Start isEmpty. Operand 26737 states and 29727 transitions. [2023-11-29 01:12:58,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2023-11-29 01:12:58,040 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:12:58,041 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 18, 18, 18, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:12:58,046 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2023-11-29 01:12:58,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:12:58,241 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 01:12:58,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:12:58,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1615787396, now seen corresponding path program 3 times [2023-11-29 01:12:58,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:12:58,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966962716] [2023-11-29 01:12:58,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:12:58,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:12:58,265 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:12:58,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [924360172] [2023-11-29 01:12:58,265 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 01:12:58,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:12:58,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:12:58,266 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:12:58,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2023-11-29 01:12:58,465 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 19 check-sat command(s) [2023-11-29 01:12:58,465 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:12:58,468 INFO L262 TraceCheckSpWp]: Trace formula consists of 630 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-29 01:12:58,474 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:12:58,970 INFO L134 CoverageAnalysis]: Checked inductivity of 3388 backedges. 0 proven. 2700 refuted. 0 times theorem prover too weak. 688 trivial. 0 not checked. [2023-11-29 01:12:58,970 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:12:59,632 INFO L134 CoverageAnalysis]: Checked inductivity of 3388 backedges. 0 proven. 2700 refuted. 0 times theorem prover too weak. 688 trivial. 0 not checked. [2023-11-29 01:12:59,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:12:59,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966962716] [2023-11-29 01:12:59,633 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:12:59,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [924360172] [2023-11-29 01:12:59,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [924360172] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:12:59,633 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:12:59,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 39 [2023-11-29 01:12:59,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246294036] [2023-11-29 01:12:59,634 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:12:59,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-11-29 01:12:59,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:12:59,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-11-29 01:12:59,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2023-11-29 01:12:59,636 INFO L87 Difference]: Start difference. First operand 26737 states and 29727 transitions. Second operand has 40 states, 39 states have (on average 14.743589743589743) internal successors, (575), 40 states have internal predecessors, (575), 39 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 39 states have call predecessors, (40), 39 states have call successors, (40) [2023-11-29 01:13:10,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:13:10,045 INFO L93 Difference]: Finished difference Result 51089 states and 57511 transitions. [2023-11-29 01:13:10,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-11-29 01:13:10,046 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 14.743589743589743) internal successors, (575), 40 states have internal predecessors, (575), 39 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 39 states have call predecessors, (40), 39 states have call successors, (40) Word has length 390 [2023-11-29 01:13:10,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:13:10,118 INFO L225 Difference]: With dead ends: 51089 [2023-11-29 01:13:10,118 INFO L226 Difference]: Without dead ends: 51088 [2023-11-29 01:13:10,127 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 778 GetRequests, 740 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2023-11-29 01:13:10,127 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 977 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 977 SdHoareTripleChecker+Valid, 566 SdHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-29 01:13:10,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [977 Valid, 566 Invalid, 438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 437 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-29 01:13:10,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51088 states. [2023-11-29 01:13:14,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51088 to 40797. [2023-11-29 01:13:14,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40797 states, 38288 states have (on average 1.0682459256163812) internal successors, (40901), 38291 states have internal predecessors, (40901), 2503 states have call successors, (2503), 2 states have call predecessors, (2503), 2 states have return successors, (2503), 2503 states have call predecessors, (2503), 2503 states have call successors, (2503) [2023-11-29 01:13:14,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40797 states to 40797 states and 45907 transitions. [2023-11-29 01:13:14,664 INFO L78 Accepts]: Start accepts. Automaton has 40797 states and 45907 transitions. Word has length 390 [2023-11-29 01:13:14,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:13:14,665 INFO L495 AbstractCegarLoop]: Abstraction has 40797 states and 45907 transitions. [2023-11-29 01:13:14,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 14.743589743589743) internal successors, (575), 40 states have internal predecessors, (575), 39 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 39 states have call predecessors, (40), 39 states have call successors, (40) [2023-11-29 01:13:14,665 INFO L276 IsEmpty]: Start isEmpty. Operand 40797 states and 45907 transitions. [2023-11-29 01:13:14,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2023-11-29 01:13:14,673 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:13:14,673 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 18, 18, 18, 18, 18, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:13:14,678 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2023-11-29 01:13:14,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2023-11-29 01:13:14,874 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 01:13:14,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:13:14,874 INFO L85 PathProgramCache]: Analyzing trace with hash 149337269, now seen corresponding path program 18 times [2023-11-29 01:13:14,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:13:14,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638004238] [2023-11-29 01:13:14,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:13:14,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:13:14,888 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:13:14,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [848872727] [2023-11-29 01:13:14,888 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 01:13:14,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:13:14,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:13:14,889 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:13:14,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2023-11-29 01:13:15,163 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2023-11-29 01:13:15,163 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:13:15,166 INFO L262 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 01:13:15,171 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:13:16,140 INFO L134 CoverageAnalysis]: Checked inductivity of 3720 backedges. 0 proven. 1756 refuted. 0 times theorem prover too weak. 1964 trivial. 0 not checked. [2023-11-29 01:13:16,141 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:13:16,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:13:16,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638004238] [2023-11-29 01:13:16,634 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:13:16,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [848872727] [2023-11-29 01:13:16,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [848872727] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:13:16,635 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:13:16,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2023-11-29 01:13:16,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862379708] [2023-11-29 01:13:16,635 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 01:13:16,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 01:13:16,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:13:16,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 01:13:16,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2023-11-29 01:13:16,636 INFO L87 Difference]: Start difference. First operand 40797 states and 45907 transitions. Second operand has 12 states, 11 states have (on average 12.363636363636363) internal successors, (136), 12 states have internal predecessors, (136), 9 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2023-11-29 01:13:21,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:13:21,428 INFO L93 Difference]: Finished difference Result 43379 states and 48752 transitions. [2023-11-29 01:13:21,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-29 01:13:21,429 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 12.363636363636363) internal successors, (136), 12 states have internal predecessors, (136), 9 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) Word has length 415 [2023-11-29 01:13:21,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:13:21,485 INFO L225 Difference]: With dead ends: 43379 [2023-11-29 01:13:21,485 INFO L226 Difference]: Without dead ends: 43378 [2023-11-29 01:13:21,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 693 GetRequests, 672 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=171, Invalid=335, Unknown=0, NotChecked=0, Total=506 [2023-11-29 01:13:21,494 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 43 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 388 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:13:21,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 269 Invalid, 388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 388 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 01:13:21,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43378 states. [2023-11-29 01:13:26,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43378 to 40816. [2023-11-29 01:13:26,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40816 states, 38306 states have (on average 1.0682921735498356) internal successors, (40922), 38309 states have internal predecessors, (40922), 2504 states have call successors, (2504), 2 states have call predecessors, (2504), 2 states have return successors, (2504), 2504 states have call predecessors, (2504), 2504 states have call successors, (2504) [2023-11-29 01:13:26,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40816 states to 40816 states and 45930 transitions. [2023-11-29 01:13:26,510 INFO L78 Accepts]: Start accepts. Automaton has 40816 states and 45930 transitions. Word has length 415 [2023-11-29 01:13:26,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:13:26,511 INFO L495 AbstractCegarLoop]: Abstraction has 40816 states and 45930 transitions. [2023-11-29 01:13:26,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 12.363636363636363) internal successors, (136), 12 states have internal predecessors, (136), 9 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2023-11-29 01:13:26,511 INFO L276 IsEmpty]: Start isEmpty. Operand 40816 states and 45930 transitions. [2023-11-29 01:13:26,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2023-11-29 01:13:26,521 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:13:26,521 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:13:26,527 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2023-11-29 01:13:26,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2023-11-29 01:13:26,722 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 01:13:26,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:13:26,723 INFO L85 PathProgramCache]: Analyzing trace with hash -797716987, now seen corresponding path program 19 times [2023-11-29 01:13:26,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:13:26,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293253153] [2023-11-29 01:13:26,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:13:26,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:13:26,748 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:13:26,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [939075814] [2023-11-29 01:13:26,749 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 01:13:26,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:13:26,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:13:26,750 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:13:26,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2023-11-29 01:13:26,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:13:26,900 INFO L262 TraceCheckSpWp]: Trace formula consists of 642 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-29 01:13:26,904 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:13:27,950 INFO L134 CoverageAnalysis]: Checked inductivity of 3464 backedges. 0 proven. 2592 refuted. 0 times theorem prover too weak. 872 trivial. 0 not checked. [2023-11-29 01:13:27,950 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:13:30,488 INFO L134 CoverageAnalysis]: Checked inductivity of 3464 backedges. 0 proven. 2592 refuted. 0 times theorem prover too weak. 872 trivial. 0 not checked. [2023-11-29 01:13:30,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:13:30,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293253153] [2023-11-29 01:13:30,489 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:13:30,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [939075814] [2023-11-29 01:13:30,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [939075814] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:13:30,489 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:13:30,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 27 [2023-11-29 01:13:30,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328818643] [2023-11-29 01:13:30,490 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:13:30,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-29 01:13:30,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:13:30,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-29 01:13:30,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=576, Unknown=0, NotChecked=0, Total=756 [2023-11-29 01:13:30,492 INFO L87 Difference]: Start difference. First operand 40816 states and 45930 transitions. Second operand has 28 states, 27 states have (on average 16.11111111111111) internal successors, (435), 28 states have internal predecessors, (435), 23 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 23 states have call predecessors, (24), 23 states have call successors, (24) [2023-11-29 01:13:37,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:13:37,111 INFO L93 Difference]: Finished difference Result 40823 states and 45930 transitions. [2023-11-29 01:13:37,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-11-29 01:13:37,112 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 16.11111111111111) internal successors, (435), 28 states have internal predecessors, (435), 23 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 23 states have call predecessors, (24), 23 states have call successors, (24) Word has length 415 [2023-11-29 01:13:37,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:13:37,159 INFO L225 Difference]: With dead ends: 40823 [2023-11-29 01:13:37,159 INFO L226 Difference]: Without dead ends: 40822 [2023-11-29 01:13:37,169 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 864 GetRequests, 802 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 559 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1109, Invalid=2923, Unknown=0, NotChecked=0, Total=4032 [2023-11-29 01:13:37,169 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 184 mSDsluCounter, 1250 mSDsCounter, 0 mSdLazyCounter, 2724 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 1359 SdHoareTripleChecker+Invalid, 2797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 2724 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:13:37,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 1359 Invalid, 2797 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 2724 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-29 01:13:37,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40822 states. [2023-11-29 01:13:41,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40822 to 40816. [2023-11-29 01:13:41,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40816 states, 38306 states have (on average 1.0678744844149741) internal successors, (40906), 38309 states have internal predecessors, (40906), 2504 states have call successors, (2504), 2 states have call predecessors, (2504), 2 states have return successors, (2504), 2504 states have call predecessors, (2504), 2504 states have call successors, (2504) [2023-11-29 01:13:41,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40816 states to 40816 states and 45914 transitions. [2023-11-29 01:13:41,538 INFO L78 Accepts]: Start accepts. Automaton has 40816 states and 45914 transitions. Word has length 415 [2023-11-29 01:13:41,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:13:41,539 INFO L495 AbstractCegarLoop]: Abstraction has 40816 states and 45914 transitions. [2023-11-29 01:13:41,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 16.11111111111111) internal successors, (435), 28 states have internal predecessors, (435), 23 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 23 states have call predecessors, (24), 23 states have call successors, (24) [2023-11-29 01:13:41,539 INFO L276 IsEmpty]: Start isEmpty. Operand 40816 states and 45914 transitions. [2023-11-29 01:13:41,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 436 [2023-11-29 01:13:41,549 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:13:41,550 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 19, 19, 19, 19, 19, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:13:41,555 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2023-11-29 01:13:41,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2023-11-29 01:13:41,750 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 01:13:41,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:13:41,751 INFO L85 PathProgramCache]: Analyzing trace with hash -373208316, now seen corresponding path program 20 times [2023-11-29 01:13:41,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:13:41,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266797128] [2023-11-29 01:13:41,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:13:41,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:13:41,771 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:13:41,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [242959094] [2023-11-29 01:13:41,771 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:13:41,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:13:41,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:13:41,772 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:13:41,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2023-11-29 01:13:41,933 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 01:13:41,933 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:13:41,936 INFO L262 TraceCheckSpWp]: Trace formula consists of 646 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-29 01:13:41,941 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:13:42,826 INFO L134 CoverageAnalysis]: Checked inductivity of 4115 backedges. 1267 proven. 2004 refuted. 0 times theorem prover too weak. 844 trivial. 0 not checked. [2023-11-29 01:13:42,826 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:13:43,546 INFO L134 CoverageAnalysis]: Checked inductivity of 4115 backedges. 1267 proven. 2004 refuted. 0 times theorem prover too weak. 844 trivial. 0 not checked. [2023-11-29 01:13:43,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:13:43,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266797128] [2023-11-29 01:13:43,546 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:13:43,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [242959094] [2023-11-29 01:13:43,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [242959094] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:13:43,547 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:13:43,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 42 [2023-11-29 01:13:43,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978123747] [2023-11-29 01:13:43,547 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:13:43,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-11-29 01:13:43,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:13:43,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-11-29 01:13:43,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=463, Invalid=1259, Unknown=0, NotChecked=0, Total=1722 [2023-11-29 01:13:43,551 INFO L87 Difference]: Start difference. First operand 40816 states and 45914 transitions. Second operand has 42 states, 42 states have (on average 13.880952380952381) internal successors, (583), 42 states have internal predecessors, (583), 39 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 39 states have call predecessors, (40), 39 states have call successors, (40) [2023-11-29 01:13:56,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:13:56,949 INFO L93 Difference]: Finished difference Result 126740 states and 145271 transitions. [2023-11-29 01:13:56,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2023-11-29 01:13:56,949 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 13.880952380952381) internal successors, (583), 42 states have internal predecessors, (583), 39 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 39 states have call predecessors, (40), 39 states have call successors, (40) Word has length 435 [2023-11-29 01:13:56,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:13:57,104 INFO L225 Difference]: With dead ends: 126740 [2023-11-29 01:13:57,105 INFO L226 Difference]: Without dead ends: 105750 [2023-11-29 01:13:57,132 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 970 GetRequests, 824 SyntacticMatches, 4 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7200 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=4299, Invalid=16293, Unknown=0, NotChecked=0, Total=20592 [2023-11-29 01:13:57,132 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 1364 mSDsluCounter, 965 mSDsCounter, 0 mSdLazyCounter, 2330 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1364 SdHoareTripleChecker+Valid, 1089 SdHoareTripleChecker+Invalid, 2486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 2330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-11-29 01:13:57,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1364 Valid, 1089 Invalid, 2486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 2330 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-11-29 01:13:57,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105750 states. [2023-11-29 01:14:05,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105750 to 78749. [2023-11-29 01:14:05,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78749 states, 73883 states have (on average 1.076539934761718) internal successors, (79538), 73886 states have internal predecessors, (79538), 4860 states have call successors, (4860), 2 states have call predecessors, (4860), 2 states have return successors, (4860), 4860 states have call predecessors, (4860), 4860 states have call successors, (4860) [2023-11-29 01:14:06,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78749 states to 78749 states and 89258 transitions. [2023-11-29 01:14:06,037 INFO L78 Accepts]: Start accepts. Automaton has 78749 states and 89258 transitions. Word has length 435 [2023-11-29 01:14:06,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:14:06,038 INFO L495 AbstractCegarLoop]: Abstraction has 78749 states and 89258 transitions. [2023-11-29 01:14:06,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 13.880952380952381) internal successors, (583), 42 states have internal predecessors, (583), 39 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 39 states have call predecessors, (40), 39 states have call successors, (40) [2023-11-29 01:14:06,038 INFO L276 IsEmpty]: Start isEmpty. Operand 78749 states and 89258 transitions. [2023-11-29 01:14:06,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 436 [2023-11-29 01:14:06,046 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:14:06,047 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 18, 18, 18, 18, 18, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:14:06,052 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2023-11-29 01:14:06,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2023-11-29 01:14:06,247 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 01:14:06,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:14:06,248 INFO L85 PathProgramCache]: Analyzing trace with hash -677641010, now seen corresponding path program 21 times [2023-11-29 01:14:06,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:14:06,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559473182] [2023-11-29 01:14:06,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:14:06,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:14:06,271 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:14:06,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [251713772] [2023-11-29 01:14:06,271 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 01:14:06,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:14:06,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:14:06,273 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:14:06,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2023-11-29 01:14:06,377 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2023-11-29 01:14:06,377 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:14:06,379 INFO L262 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 01:14:06,383 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:14:06,607 INFO L134 CoverageAnalysis]: Checked inductivity of 4051 backedges. 1514 proven. 335 refuted. 0 times theorem prover too weak. 2202 trivial. 0 not checked. [2023-11-29 01:14:06,607 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:14:06,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:14:06,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559473182] [2023-11-29 01:14:06,796 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:14:06,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [251713772] [2023-11-29 01:14:06,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [251713772] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:14:06,796 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:14:06,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2023-11-29 01:14:06,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984773170] [2023-11-29 01:14:06,797 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 01:14:06,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 01:14:06,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:14:06,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 01:14:06,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2023-11-29 01:14:06,798 INFO L87 Difference]: Start difference. First operand 78749 states and 89258 transitions. Second operand has 12 states, 11 states have (on average 12.636363636363637) internal successors, (139), 12 states have internal predecessors, (139), 8 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) [2023-11-29 01:14:14,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:14:14,959 INFO L93 Difference]: Finished difference Result 84148 states and 95247 transitions. [2023-11-29 01:14:14,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-29 01:14:14,959 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 12.636363636363637) internal successors, (139), 12 states have internal predecessors, (139), 8 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) Word has length 435 [2023-11-29 01:14:14,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:14:15,069 INFO L225 Difference]: With dead ends: 84148 [2023-11-29 01:14:15,069 INFO L226 Difference]: Without dead ends: 77735 [2023-11-29 01:14:15,083 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 455 GetRequests, 434 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=97, Invalid=409, Unknown=0, NotChecked=0, Total=506 [2023-11-29 01:14:15,084 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 129 mSDsluCounter, 870 mSDsCounter, 0 mSdLazyCounter, 1654 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 999 SdHoareTripleChecker+Invalid, 1672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1654 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 01:14:15,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 999 Invalid, 1672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1654 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 01:14:15,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77735 states. [2023-11-29 01:14:22,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77735 to 71676. [2023-11-29 01:14:22,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71676 states, 67243 states have (on average 1.0784914414883333) internal successors, (72521), 67246 states have internal predecessors, (72521), 4427 states have call successors, (4427), 2 states have call predecessors, (4427), 2 states have return successors, (4427), 4427 states have call predecessors, (4427), 4427 states have call successors, (4427) [2023-11-29 01:14:22,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71676 states to 71676 states and 81375 transitions. [2023-11-29 01:14:22,755 INFO L78 Accepts]: Start accepts. Automaton has 71676 states and 81375 transitions. Word has length 435 [2023-11-29 01:14:22,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:14:22,756 INFO L495 AbstractCegarLoop]: Abstraction has 71676 states and 81375 transitions. [2023-11-29 01:14:22,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 12.636363636363637) internal successors, (139), 12 states have internal predecessors, (139), 8 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) [2023-11-29 01:14:22,756 INFO L276 IsEmpty]: Start isEmpty. Operand 71676 states and 81375 transitions. [2023-11-29 01:14:22,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2023-11-29 01:14:22,766 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:14:22,766 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 22, 22, 22, 22, 22, 22, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:14:22,771 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2023-11-29 01:14:22,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable50 [2023-11-29 01:14:22,967 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 01:14:22,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:14:22,968 INFO L85 PathProgramCache]: Analyzing trace with hash -242083181, now seen corresponding path program 4 times [2023-11-29 01:14:22,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:14:22,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134890794] [2023-11-29 01:14:22,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:14:22,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:14:22,988 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:14:22,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1758881383] [2023-11-29 01:14:22,989 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 01:14:22,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:14:22,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:14:22,990 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:14:22,992 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2023-11-29 01:14:23,140 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 01:14:23,140 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:14:23,143 INFO L262 TraceCheckSpWp]: Trace formula consists of 684 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-29 01:14:23,147 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:14:23,730 INFO L134 CoverageAnalysis]: Checked inductivity of 4954 backedges. 0 proven. 3938 refuted. 0 times theorem prover too weak. 1016 trivial. 0 not checked. [2023-11-29 01:14:23,731 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:14:24,795 INFO L134 CoverageAnalysis]: Checked inductivity of 4954 backedges. 0 proven. 3938 refuted. 0 times theorem prover too weak. 1016 trivial. 0 not checked. [2023-11-29 01:14:24,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:14:24,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134890794] [2023-11-29 01:14:24,795 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:14:24,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1758881383] [2023-11-29 01:14:24,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1758881383] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:14:24,795 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:14:24,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 47 [2023-11-29 01:14:24,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515738014] [2023-11-29 01:14:24,796 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:14:24,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-11-29 01:14:24,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:14:24,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-11-29 01:14:24,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2023-11-29 01:14:24,800 INFO L87 Difference]: Start difference. First operand 71676 states and 81375 transitions. Second operand has 48 states, 47 states have (on average 14.659574468085106) internal successors, (689), 48 states have internal predecessors, (689), 47 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 47 states have call predecessors, (48), 47 states have call successors, (48) [2023-11-29 01:14:34,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:14:34,416 INFO L93 Difference]: Finished difference Result 89575 states and 102987 transitions. [2023-11-29 01:14:34,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-11-29 01:14:34,416 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 14.659574468085106) internal successors, (689), 48 states have internal predecessors, (689), 47 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 47 states have call predecessors, (48), 47 states have call successors, (48) Word has length 467 [2023-11-29 01:14:34,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:14:34,514 INFO L225 Difference]: With dead ends: 89575 [2023-11-29 01:14:34,514 INFO L226 Difference]: Without dead ends: 89574 [2023-11-29 01:14:34,527 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 932 GetRequests, 886 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2023-11-29 01:14:34,528 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 571 mSDsluCounter, 411 mSDsCounter, 0 mSdLazyCounter, 578 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 571 SdHoareTripleChecker+Valid, 437 SdHoareTripleChecker+Invalid, 718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 01:14:34,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [571 Valid, 437 Invalid, 718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 578 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 01:14:34,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89574 states. [2023-11-29 01:14:42,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89574 to 86933. [2023-11-29 01:14:42,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86933 states, 81547 states have (on average 1.0874710289771543) internal successors, (88680), 81550 states have internal predecessors, (88680), 5380 states have call successors, (5380), 2 states have call predecessors, (5380), 2 states have return successors, (5380), 5380 states have call predecessors, (5380), 5380 states have call successors, (5380) [2023-11-29 01:14:42,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86933 states to 86933 states and 99440 transitions. [2023-11-29 01:14:42,190 INFO L78 Accepts]: Start accepts. Automaton has 86933 states and 99440 transitions. Word has length 467 [2023-11-29 01:14:42,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:14:42,191 INFO L495 AbstractCegarLoop]: Abstraction has 86933 states and 99440 transitions. [2023-11-29 01:14:42,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 14.659574468085106) internal successors, (689), 48 states have internal predecessors, (689), 47 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 47 states have call predecessors, (48), 47 states have call successors, (48) [2023-11-29 01:14:42,191 INFO L276 IsEmpty]: Start isEmpty. Operand 86933 states and 99440 transitions. [2023-11-29 01:14:42,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 496 [2023-11-29 01:14:42,200 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:14:42,200 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 21, 21, 21, 21, 21, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:14:42,205 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2023-11-29 01:14:42,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2023-11-29 01:14:42,401 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 01:14:42,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:14:42,401 INFO L85 PathProgramCache]: Analyzing trace with hash 1638857659, now seen corresponding path program 22 times [2023-11-29 01:14:42,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:14:42,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526898057] [2023-11-29 01:14:42,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:14:42,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:14:42,416 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:14:42,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [697845881] [2023-11-29 01:14:42,416 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 01:14:42,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:14:42,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:14:42,417 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:14:42,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2023-11-29 01:14:42,554 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 01:14:42,555 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:14:42,558 INFO L262 TraceCheckSpWp]: Trace formula consists of 733 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-29 01:14:42,564 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:14:43,554 INFO L134 CoverageAnalysis]: Checked inductivity of 5344 backedges. 0 proven. 3396 refuted. 0 times theorem prover too weak. 1948 trivial. 0 not checked. [2023-11-29 01:14:43,554 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:14:43,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:14:43,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526898057] [2023-11-29 01:14:43,666 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:14:43,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [697845881] [2023-11-29 01:14:43,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [697845881] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:14:43,667 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:14:43,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2023-11-29 01:14:43,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484391660] [2023-11-29 01:14:43,667 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 01:14:43,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 01:14:43,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:14:43,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 01:14:43,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2023-11-29 01:14:43,669 INFO L87 Difference]: Start difference. First operand 86933 states and 99440 transitions. Second operand has 14 states, 13 states have (on average 13.153846153846153) internal successors, (171), 14 states have internal predecessors, (171), 11 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 11 states have call predecessors, (12), 11 states have call successors, (12) [2023-11-29 01:14:51,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:14:51,792 INFO L93 Difference]: Finished difference Result 88943 states and 101669 transitions. [2023-11-29 01:14:51,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 01:14:51,793 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 13.153846153846153) internal successors, (171), 14 states have internal predecessors, (171), 11 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 11 states have call predecessors, (12), 11 states have call successors, (12) Word has length 495 [2023-11-29 01:14:51,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:14:51,887 INFO L225 Difference]: With dead ends: 88943 [2023-11-29 01:14:51,887 INFO L226 Difference]: Without dead ends: 88942 [2023-11-29 01:14:51,900 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 507 GetRequests, 492 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2023-11-29 01:14:51,901 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 40 mSDsluCounter, 563 mSDsCounter, 0 mSdLazyCounter, 1430 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 639 SdHoareTripleChecker+Invalid, 1430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 01:14:51,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 639 Invalid, 1430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1430 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 01:14:51,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88942 states. [2023-11-29 01:14:59,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88942 to 86933. [2023-11-29 01:14:59,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86933 states, 81547 states have (on average 1.0874587661103412) internal successors, (88679), 81550 states have internal predecessors, (88679), 5380 states have call successors, (5380), 2 states have call predecessors, (5380), 2 states have return successors, (5380), 5380 states have call predecessors, (5380), 5380 states have call successors, (5380) [2023-11-29 01:14:59,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86933 states to 86933 states and 99439 transitions. [2023-11-29 01:14:59,186 INFO L78 Accepts]: Start accepts. Automaton has 86933 states and 99439 transitions. Word has length 495 [2023-11-29 01:14:59,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:14:59,186 INFO L495 AbstractCegarLoop]: Abstraction has 86933 states and 99439 transitions. [2023-11-29 01:14:59,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 13.153846153846153) internal successors, (171), 14 states have internal predecessors, (171), 11 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 11 states have call predecessors, (12), 11 states have call successors, (12) [2023-11-29 01:14:59,186 INFO L276 IsEmpty]: Start isEmpty. Operand 86933 states and 99439 transitions. [2023-11-29 01:14:59,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 516 [2023-11-29 01:14:59,196 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:14:59,197 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 22, 22, 22, 22, 22, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:14:59,201 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Ended with exit code 0 [2023-11-29 01:14:59,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2023-11-29 01:14:59,397 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 01:14:59,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:14:59,398 INFO L85 PathProgramCache]: Analyzing trace with hash -597746678, now seen corresponding path program 23 times [2023-11-29 01:14:59,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:14:59,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858857719] [2023-11-29 01:14:59,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:14:59,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:14:59,412 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:14:59,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [507806500] [2023-11-29 01:14:59,412 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 01:14:59,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:14:59,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:14:59,413 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:14:59,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2023-11-29 01:14:59,603 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2023-11-29 01:14:59,603 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:14:59,607 INFO L262 TraceCheckSpWp]: Trace formula consists of 761 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 01:14:59,611 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:15:00,183 INFO L134 CoverageAnalysis]: Checked inductivity of 5815 backedges. 3199 proven. 1508 refuted. 0 times theorem prover too weak. 1108 trivial. 0 not checked. [2023-11-29 01:15:00,183 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:15:00,567 INFO L134 CoverageAnalysis]: Checked inductivity of 5815 backedges. 2655 proven. 1508 refuted. 0 times theorem prover too weak. 1652 trivial. 0 not checked. [2023-11-29 01:15:00,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:15:00,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858857719] [2023-11-29 01:15:00,568 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:15:00,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [507806500] [2023-11-29 01:15:00,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [507806500] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:15:00,568 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:15:00,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 28 [2023-11-29 01:15:00,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692232546] [2023-11-29 01:15:00,568 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:15:00,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-29 01:15:00,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:15:00,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-29 01:15:00,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=567, Unknown=0, NotChecked=0, Total=756 [2023-11-29 01:15:00,570 INFO L87 Difference]: Start difference. First operand 86933 states and 99439 transitions. Second operand has 28 states, 28 states have (on average 14.357142857142858) internal successors, (402), 28 states have internal predecessors, (402), 27 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (29), 27 states have call predecessors, (29), 27 states have call successors, (29) [2023-11-29 01:15:08,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:15:08,068 INFO L93 Difference]: Finished difference Result 97055 states and 110882 transitions. [2023-11-29 01:15:08,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-29 01:15:08,069 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 14.357142857142858) internal successors, (402), 28 states have internal predecessors, (402), 27 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (29), 27 states have call predecessors, (29), 27 states have call successors, (29) Word has length 515 [2023-11-29 01:15:08,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:15:08,160 INFO L225 Difference]: With dead ends: 97055 [2023-11-29 01:15:08,161 INFO L226 Difference]: Without dead ends: 82987 [2023-11-29 01:15:08,176 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1037 GetRequests, 992 SyntacticMatches, 10 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 393 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=333, Invalid=999, Unknown=0, NotChecked=0, Total=1332 [2023-11-29 01:15:08,177 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 111 mSDsluCounter, 637 mSDsCounter, 0 mSdLazyCounter, 1265 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 800 SdHoareTripleChecker+Invalid, 1267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 01:15:08,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 800 Invalid, 1267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1265 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 01:15:08,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82987 states. [2023-11-29 01:15:14,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82987 to 82169. [2023-11-29 01:15:14,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82169 states, 77065 states have (on average 1.0832803477583859) internal successors, (83483), 77068 states have internal predecessors, (83483), 5098 states have call successors, (5098), 2 states have call predecessors, (5098), 2 states have return successors, (5098), 5098 states have call predecessors, (5098), 5098 states have call successors, (5098) [2023-11-29 01:15:14,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82169 states to 82169 states and 93679 transitions. [2023-11-29 01:15:14,770 INFO L78 Accepts]: Start accepts. Automaton has 82169 states and 93679 transitions. Word has length 515 [2023-11-29 01:15:14,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:15:14,771 INFO L495 AbstractCegarLoop]: Abstraction has 82169 states and 93679 transitions. [2023-11-29 01:15:14,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 14.357142857142858) internal successors, (402), 28 states have internal predecessors, (402), 27 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (29), 27 states have call predecessors, (29), 27 states have call successors, (29) [2023-11-29 01:15:14,771 INFO L276 IsEmpty]: Start isEmpty. Operand 82169 states and 93679 transitions. [2023-11-29 01:15:14,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 536 [2023-11-29 01:15:14,782 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:15:14,782 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 24, 24, 24, 24, 24, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:15:14,789 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2023-11-29 01:15:14,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:15:14,983 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 01:15:14,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:15:14,983 INFO L85 PathProgramCache]: Analyzing trace with hash -577200113, now seen corresponding path program 24 times [2023-11-29 01:15:14,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:15:14,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696389993] [2023-11-29 01:15:14,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:15:14,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:15:15,001 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:15:15,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1588745309] [2023-11-29 01:15:15,002 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 01:15:15,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:15:15,002 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:15:15,003 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:15:15,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2023-11-29 01:15:15,228 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 26 check-sat command(s) [2023-11-29 01:15:15,228 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:15:15,232 INFO L262 TraceCheckSpWp]: Trace formula consists of 758 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-29 01:15:15,236 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:15:16,218 INFO L134 CoverageAnalysis]: Checked inductivity of 6390 backedges. 0 proven. 3886 refuted. 0 times theorem prover too weak. 2504 trivial. 0 not checked. [2023-11-29 01:15:16,218 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:15:16,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:15:16,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696389993] [2023-11-29 01:15:16,339 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:15:16,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1588745309] [2023-11-29 01:15:16,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1588745309] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:15:16,339 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:15:16,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2023-11-29 01:15:16,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971746257] [2023-11-29 01:15:16,340 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 01:15:16,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 01:15:16,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:15:16,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 01:15:16,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=333, Unknown=0, NotChecked=0, Total=380 [2023-11-29 01:15:16,341 INFO L87 Difference]: Start difference. First operand 82169 states and 93679 transitions. Second operand has 18 states, 17 states have (on average 13.294117647058824) internal successors, (226), 18 states have internal predecessors, (226), 15 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 15 states have call predecessors, (16), 15 states have call successors, (16) [2023-11-29 01:15:23,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:15:23,905 INFO L93 Difference]: Finished difference Result 84355 states and 96206 transitions. [2023-11-29 01:15:23,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-29 01:15:23,905 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 13.294117647058824) internal successors, (226), 18 states have internal predecessors, (226), 15 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 15 states have call predecessors, (16), 15 states have call successors, (16) Word has length 535 [2023-11-29 01:15:23,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:15:23,990 INFO L225 Difference]: With dead ends: 84355 [2023-11-29 01:15:23,991 INFO L226 Difference]: Without dead ends: 84354 [2023-11-29 01:15:24,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 547 GetRequests, 528 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=365, Unknown=0, NotChecked=0, Total=420 [2023-11-29 01:15:24,002 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 48 mSDsluCounter, 1115 mSDsCounter, 0 mSdLazyCounter, 3056 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 1221 SdHoareTripleChecker+Invalid, 3056 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3056 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:15:24,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 1221 Invalid, 3056 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3056 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-29 01:15:24,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84354 states. [2023-11-29 01:15:30,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84354 to 82667. [2023-11-29 01:15:30,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82667 states, 77533 states have (on average 1.0835257245302001) internal successors, (84009), 77536 states have internal predecessors, (84009), 5128 states have call successors, (5128), 2 states have call predecessors, (5128), 2 states have return successors, (5128), 5128 states have call predecessors, (5128), 5128 states have call successors, (5128) [2023-11-29 01:15:30,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82667 states to 82667 states and 94265 transitions. [2023-11-29 01:15:30,652 INFO L78 Accepts]: Start accepts. Automaton has 82667 states and 94265 transitions. Word has length 535 [2023-11-29 01:15:30,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:15:30,652 INFO L495 AbstractCegarLoop]: Abstraction has 82667 states and 94265 transitions. [2023-11-29 01:15:30,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 13.294117647058824) internal successors, (226), 18 states have internal predecessors, (226), 15 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 15 states have call predecessors, (16), 15 states have call successors, (16) [2023-11-29 01:15:30,652 INFO L276 IsEmpty]: Start isEmpty. Operand 82667 states and 94265 transitions. [2023-11-29 01:15:30,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 556 [2023-11-29 01:15:30,665 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:15:30,665 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 25, 25, 25, 25, 25, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:15:30,672 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2023-11-29 01:15:30,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:15:30,866 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 01:15:30,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:15:30,866 INFO L85 PathProgramCache]: Analyzing trace with hash 1393952094, now seen corresponding path program 25 times [2023-11-29 01:15:30,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:15:30,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470284945] [2023-11-29 01:15:30,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:15:30,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:15:30,884 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:15:30,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1591076478] [2023-11-29 01:15:30,884 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 01:15:30,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:15:30,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:15:30,885 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:15:30,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2023-11-29 01:15:31,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:15:31,035 INFO L262 TraceCheckSpWp]: Trace formula consists of 814 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-29 01:15:31,041 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:15:31,870 INFO L134 CoverageAnalysis]: Checked inductivity of 6905 backedges. 1489 proven. 4008 refuted. 0 times theorem prover too weak. 1408 trivial. 0 not checked. [2023-11-29 01:15:31,870 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:15:32,537 INFO L134 CoverageAnalysis]: Checked inductivity of 6905 backedges. 1489 proven. 4008 refuted. 0 times theorem prover too weak. 1408 trivial. 0 not checked. [2023-11-29 01:15:32,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:15:32,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470284945] [2023-11-29 01:15:32,538 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:15:32,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1591076478] [2023-11-29 01:15:32,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1591076478] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:15:32,538 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:15:32,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 43 [2023-11-29 01:15:32,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57826062] [2023-11-29 01:15:32,539 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:15:32,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-11-29 01:15:32,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:15:32,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-11-29 01:15:32,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=434, Invalid=1372, Unknown=0, NotChecked=0, Total=1806 [2023-11-29 01:15:32,542 INFO L87 Difference]: Start difference. First operand 82667 states and 94265 transitions. Second operand has 43 states, 43 states have (on average 14.186046511627907) internal successors, (610), 43 states have internal predecessors, (610), 41 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 41 states have call predecessors, (42), 41 states have call successors, (42) [2023-11-29 01:15:41,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:15:41,926 INFO L93 Difference]: Finished difference Result 163362 states and 188256 transitions. [2023-11-29 01:15:41,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-11-29 01:15:41,927 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 14.186046511627907) internal successors, (610), 43 states have internal predecessors, (610), 41 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 41 states have call predecessors, (42), 41 states have call successors, (42) Word has length 555 [2023-11-29 01:15:41,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:15:42,069 INFO L225 Difference]: With dead ends: 163362 [2023-11-29 01:15:42,070 INFO L226 Difference]: Without dead ends: 108581 [2023-11-29 01:15:42,109 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1122 GetRequests, 1052 SyntacticMatches, 15 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1028 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=763, Invalid=2429, Unknown=0, NotChecked=0, Total=3192 [2023-11-29 01:15:42,110 INFO L413 NwaCegarLoop]: 249 mSDtfsCounter, 150 mSDsluCounter, 1261 mSDsCounter, 0 mSdLazyCounter, 2795 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 1510 SdHoareTripleChecker+Invalid, 2797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2795 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:15:42,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 1510 Invalid, 2797 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 2795 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-29 01:15:42,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108581 states. [2023-11-29 01:15:49,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108581 to 88451. [2023-11-29 01:15:49,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88451 states, 82940 states have (on average 1.0830721003134796) internal successors, (89830), 82943 states have internal predecessors, (89830), 5505 states have call successors, (5505), 2 states have call predecessors, (5505), 2 states have return successors, (5505), 5505 states have call predecessors, (5505), 5505 states have call successors, (5505) [2023-11-29 01:15:49,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88451 states to 88451 states and 100840 transitions. [2023-11-29 01:15:49,657 INFO L78 Accepts]: Start accepts. Automaton has 88451 states and 100840 transitions. Word has length 555 [2023-11-29 01:15:49,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:15:49,657 INFO L495 AbstractCegarLoop]: Abstraction has 88451 states and 100840 transitions. [2023-11-29 01:15:49,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 14.186046511627907) internal successors, (610), 43 states have internal predecessors, (610), 41 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 41 states have call predecessors, (42), 41 states have call successors, (42) [2023-11-29 01:15:49,658 INFO L276 IsEmpty]: Start isEmpty. Operand 88451 states and 100840 transitions. [2023-11-29 01:15:49,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 556 [2023-11-29 01:15:49,669 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:15:49,670 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 24, 24, 24, 24, 24, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:15:49,674 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2023-11-29 01:15:49,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:15:49,871 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 01:15:49,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:15:49,872 INFO L85 PathProgramCache]: Analyzing trace with hash -77035224, now seen corresponding path program 26 times [2023-11-29 01:15:49,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:15:49,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369910907] [2023-11-29 01:15:49,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:15:49,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:15:49,919 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:15:49,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1293830415] [2023-11-29 01:15:49,920 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:15:49,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:15:49,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:15:49,921 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:15:49,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2023-11-29 01:15:50,077 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 01:15:50,078 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:15:50,081 INFO L262 TraceCheckSpWp]: Trace formula consists of 817 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-29 01:15:50,086 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:15:51,052 INFO L134 CoverageAnalysis]: Checked inductivity of 6817 backedges. 0 proven. 4321 refuted. 0 times theorem prover too weak. 2496 trivial. 0 not checked. [2023-11-29 01:15:51,052 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:15:51,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:15:51,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369910907] [2023-11-29 01:15:51,157 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:15:51,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1293830415] [2023-11-29 01:15:51,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1293830415] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:15:51,158 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:15:51,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2023-11-29 01:15:51,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620569351] [2023-11-29 01:15:51,158 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 01:15:51,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 01:15:51,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:15:51,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 01:15:51,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2023-11-29 01:15:51,159 INFO L87 Difference]: Start difference. First operand 88451 states and 100840 transitions. Second operand has 15 states, 14 states have (on average 13.285714285714286) internal successors, (186), 15 states have internal predecessors, (186), 12 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) [2023-11-29 01:16:00,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:16:00,336 INFO L93 Difference]: Finished difference Result 90167 states and 102763 transitions. [2023-11-29 01:16:00,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 01:16:00,337 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 13.285714285714286) internal successors, (186), 15 states have internal predecessors, (186), 12 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) Word has length 555 [2023-11-29 01:16:00,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:16:00,418 INFO L225 Difference]: With dead ends: 90167 [2023-11-29 01:16:00,418 INFO L226 Difference]: Without dead ends: 90166 [2023-11-29 01:16:00,429 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 567 GetRequests, 551 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2023-11-29 01:16:00,429 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 42 mSDsluCounter, 728 mSDsCounter, 0 mSdLazyCounter, 1874 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 810 SdHoareTripleChecker+Invalid, 1874 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1874 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 01:16:00,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 810 Invalid, 1874 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1874 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 01:16:00,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90166 states. [2023-11-29 01:16:07,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90166 to 88451. [2023-11-29 01:16:07,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88451 states, 82940 states have (on average 1.083060043404871) internal successors, (89829), 82943 states have internal predecessors, (89829), 5505 states have call successors, (5505), 2 states have call predecessors, (5505), 2 states have return successors, (5505), 5505 states have call predecessors, (5505), 5505 states have call successors, (5505) [2023-11-29 01:16:07,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88451 states to 88451 states and 100839 transitions. [2023-11-29 01:16:07,969 INFO L78 Accepts]: Start accepts. Automaton has 88451 states and 100839 transitions. Word has length 555 [2023-11-29 01:16:07,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:16:07,969 INFO L495 AbstractCegarLoop]: Abstraction has 88451 states and 100839 transitions. [2023-11-29 01:16:07,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 13.285714285714286) internal successors, (186), 15 states have internal predecessors, (186), 12 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) [2023-11-29 01:16:07,969 INFO L276 IsEmpty]: Start isEmpty. Operand 88451 states and 100839 transitions. [2023-11-29 01:16:07,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 576 [2023-11-29 01:16:07,980 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:16:07,980 INFO L195 NwaCegarLoop]: trace histogram [29, 29, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 26, 26, 26, 26, 26, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:16:07,985 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0 [2023-11-29 01:16:08,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2023-11-29 01:16:08,181 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 01:16:08,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:16:08,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1383490605, now seen corresponding path program 27 times [2023-11-29 01:16:08,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:16:08,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053005330] [2023-11-29 01:16:08,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:16:08,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:16:08,197 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:16:08,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1340143016] [2023-11-29 01:16:08,197 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 01:16:08,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:16:08,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:16:08,198 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:16:08,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2023-11-29 01:16:08,347 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2023-11-29 01:16:08,347 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:16:08,350 INFO L262 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 34 conjunts are in the unsatisfiable core [2023-11-29 01:16:08,356 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:16:09,232 INFO L134 CoverageAnalysis]: Checked inductivity of 7440 backedges. 0 proven. 4520 refuted. 0 times theorem prover too weak. 2920 trivial. 0 not checked. [2023-11-29 01:16:09,232 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:16:09,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:16:09,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053005330] [2023-11-29 01:16:09,389 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:16:09,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340143016] [2023-11-29 01:16:09,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1340143016] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:16:09,389 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:16:09,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2023-11-29 01:16:09,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444736794] [2023-11-29 01:16:09,390 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 01:16:09,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-29 01:16:09,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:16:09,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-29 01:16:09,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=401, Unknown=0, NotChecked=0, Total=462 [2023-11-29 01:16:09,391 INFO L87 Difference]: Start difference. First operand 88451 states and 100839 transitions. Second operand has 19 states, 18 states have (on average 13.38888888888889) internal successors, (241), 19 states have internal predecessors, (241), 16 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 16 states have call predecessors, (17), 16 states have call successors, (17) [2023-11-29 01:16:19,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:16:19,670 INFO L93 Difference]: Finished difference Result 117616 states and 134946 transitions. [2023-11-29 01:16:19,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-11-29 01:16:19,670 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 13.38888888888889) internal successors, (241), 19 states have internal predecessors, (241), 16 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 16 states have call predecessors, (17), 16 states have call successors, (17) Word has length 575 [2023-11-29 01:16:19,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:16:19,786 INFO L225 Difference]: With dead ends: 117616 [2023-11-29 01:16:19,786 INFO L226 Difference]: Without dead ends: 89267 [2023-11-29 01:16:19,814 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 615 GetRequests, 566 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 423 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=254, Invalid=2296, Unknown=0, NotChecked=0, Total=2550 [2023-11-29 01:16:19,814 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 467 mSDsluCounter, 2250 mSDsCounter, 0 mSdLazyCounter, 6180 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 468 SdHoareTripleChecker+Valid, 2434 SdHoareTripleChecker+Invalid, 6210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 6180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:16:19,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [468 Valid, 2434 Invalid, 6210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 6180 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-29 01:16:19,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89267 states. [2023-11-29 01:16:27,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89267 to 88396. [2023-11-29 01:16:27,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88396 states, 82887 states have (on average 1.083052830962636) internal successors, (89771), 82890 states have internal predecessors, (89771), 5503 states have call successors, (5503), 2 states have call predecessors, (5503), 2 states have return successors, (5503), 5503 states have call predecessors, (5503), 5503 states have call successors, (5503) [2023-11-29 01:16:27,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88396 states to 88396 states and 100777 transitions. [2023-11-29 01:16:27,810 INFO L78 Accepts]: Start accepts. Automaton has 88396 states and 100777 transitions. Word has length 575 [2023-11-29 01:16:27,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:16:27,811 INFO L495 AbstractCegarLoop]: Abstraction has 88396 states and 100777 transitions. [2023-11-29 01:16:27,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 13.38888888888889) internal successors, (241), 19 states have internal predecessors, (241), 16 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 16 states have call predecessors, (17), 16 states have call successors, (17) [2023-11-29 01:16:27,811 INFO L276 IsEmpty]: Start isEmpty. Operand 88396 states and 100777 transitions. [2023-11-29 01:16:27,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 576 [2023-11-29 01:16:27,824 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:16:27,825 INFO L195 NwaCegarLoop]: trace histogram [29, 29, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 25, 25, 25, 25, 25, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:16:27,829 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Ended with exit code 0 [2023-11-29 01:16:28,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2023-11-29 01:16:28,025 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 01:16:28,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:16:28,026 INFO L85 PathProgramCache]: Analyzing trace with hash 209006839, now seen corresponding path program 28 times [2023-11-29 01:16:28,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:16:28,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405687219] [2023-11-29 01:16:28,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:16:28,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:16:28,041 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:16:28,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1518551504] [2023-11-29 01:16:28,042 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 01:16:28,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:16:28,042 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:16:28,043 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:16:28,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2023-11-29 01:16:28,182 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 01:16:28,182 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:16:28,185 INFO L262 TraceCheckSpWp]: Trace formula consists of 845 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-29 01:16:28,189 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:16:28,713 INFO L134 CoverageAnalysis]: Checked inductivity of 7348 backedges. 4029 proven. 1912 refuted. 0 times theorem prover too weak. 1407 trivial. 0 not checked. [2023-11-29 01:16:28,713 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:16:29,147 INFO L134 CoverageAnalysis]: Checked inductivity of 7348 backedges. 3345 proven. 1912 refuted. 0 times theorem prover too weak. 2091 trivial. 0 not checked. [2023-11-29 01:16:29,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:16:29,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405687219] [2023-11-29 01:16:29,147 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:16:29,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1518551504] [2023-11-29 01:16:29,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1518551504] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:16:29,148 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:16:29,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 31 [2023-11-29 01:16:29,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051814023] [2023-11-29 01:16:29,148 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:16:29,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-11-29 01:16:29,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:16:29,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-11-29 01:16:29,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=700, Unknown=0, NotChecked=0, Total=930 [2023-11-29 01:16:29,150 INFO L87 Difference]: Start difference. First operand 88396 states and 100777 transitions. Second operand has 31 states, 31 states have (on average 14.419354838709678) internal successors, (447), 31 states have internal predecessors, (447), 30 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (32), 30 states have call predecessors, (32), 30 states have call successors, (32) [2023-11-29 01:16:37,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:16:37,786 INFO L93 Difference]: Finished difference Result 94897 states and 108083 transitions. [2023-11-29 01:16:37,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-29 01:16:37,787 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 14.419354838709678) internal successors, (447), 31 states have internal predecessors, (447), 30 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (32), 30 states have call predecessors, (32), 30 states have call successors, (32) Word has length 575 [2023-11-29 01:16:37,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:16:37,901 INFO L225 Difference]: With dead ends: 94897 [2023-11-29 01:16:37,902 INFO L226 Difference]: Without dead ends: 88404 [2023-11-29 01:16:37,919 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1158 GetRequests, 1108 SyntacticMatches, 11 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 496 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=405, Invalid=1235, Unknown=0, NotChecked=0, Total=1640 [2023-11-29 01:16:37,920 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 102 mSDsluCounter, 1199 mSDsCounter, 0 mSdLazyCounter, 2373 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 1380 SdHoareTripleChecker+Invalid, 2375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:16:37,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 1380 Invalid, 2375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 2373 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-29 01:16:37,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88404 states. [2023-11-29 01:16:45,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88404 to 87672. [2023-11-29 01:16:45,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87672 states, 82206 states have (on average 1.0817701870909666) internal successors, (88928), 82209 states have internal predecessors, (88928), 5460 states have call successors, (5460), 2 states have call predecessors, (5460), 2 states have return successors, (5460), 5460 states have call predecessors, (5460), 5460 states have call successors, (5460) [2023-11-29 01:16:45,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87672 states to 87672 states and 99848 transitions. [2023-11-29 01:16:45,325 INFO L78 Accepts]: Start accepts. Automaton has 87672 states and 99848 transitions. Word has length 575 [2023-11-29 01:16:45,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:16:45,325 INFO L495 AbstractCegarLoop]: Abstraction has 87672 states and 99848 transitions. [2023-11-29 01:16:45,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 14.419354838709678) internal successors, (447), 31 states have internal predecessors, (447), 30 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (32), 30 states have call predecessors, (32), 30 states have call successors, (32) [2023-11-29 01:16:45,325 INFO L276 IsEmpty]: Start isEmpty. Operand 87672 states and 99848 transitions. [2023-11-29 01:16:45,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 576 [2023-11-29 01:16:45,339 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:16:45,339 INFO L195 NwaCegarLoop]: trace histogram [29, 29, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 24, 24, 24, 24, 24, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:16:45,344 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Ended with exit code 0 [2023-11-29 01:16:45,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2023-11-29 01:16:45,540 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 01:16:45,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:16:45,540 INFO L85 PathProgramCache]: Analyzing trace with hash 826118081, now seen corresponding path program 29 times [2023-11-29 01:16:45,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:16:45,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730494061] [2023-11-29 01:16:45,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:16:45,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:16:45,562 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:16:45,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1576232793] [2023-11-29 01:16:45,563 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 01:16:45,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:16:45,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:16:45,564 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:16:45,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2023-11-29 01:16:45,738 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2023-11-29 01:16:45,738 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:16:45,741 INFO L262 TraceCheckSpWp]: Trace formula consists of 627 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-29 01:16:45,746 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:16:46,171 INFO L134 CoverageAnalysis]: Checked inductivity of 7264 backedges. 4676 proven. 938 refuted. 0 times theorem prover too weak. 1650 trivial. 0 not checked. [2023-11-29 01:16:46,172 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:16:46,528 INFO L134 CoverageAnalysis]: Checked inductivity of 7264 backedges. 4148 proven. 938 refuted. 0 times theorem prover too weak. 2178 trivial. 0 not checked. [2023-11-29 01:16:46,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:16:46,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730494061] [2023-11-29 01:16:46,529 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:16:46,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1576232793] [2023-11-29 01:16:46,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1576232793] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:16:46,529 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:16:46,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 25 [2023-11-29 01:16:46,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748739397] [2023-11-29 01:16:46,530 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:16:46,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-29 01:16:46,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:16:46,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-29 01:16:46,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=448, Unknown=0, NotChecked=0, Total=600 [2023-11-29 01:16:46,532 INFO L87 Difference]: Start difference. First operand 87672 states and 99848 transitions. Second operand has 25 states, 25 states have (on average 14.68) internal successors, (367), 25 states have internal predecessors, (367), 23 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 23 states have call predecessors, (26), 23 states have call successors, (26) [2023-11-29 01:16:55,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:16:55,399 INFO L93 Difference]: Finished difference Result 92682 states and 105460 transitions. [2023-11-29 01:16:55,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-29 01:16:55,399 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 14.68) internal successors, (367), 25 states have internal predecessors, (367), 23 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 23 states have call predecessors, (26), 23 states have call successors, (26) Word has length 575 [2023-11-29 01:16:55,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:16:55,507 INFO L225 Difference]: With dead ends: 92682 [2023-11-29 01:16:55,507 INFO L226 Difference]: Without dead ends: 87581 [2023-11-29 01:16:55,522 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1173 GetRequests, 1128 SyntacticMatches, 7 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 441 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=367, Invalid=1193, Unknown=0, NotChecked=0, Total=1560 [2023-11-29 01:16:55,522 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 219 mSDsluCounter, 1171 mSDsCounter, 0 mSdLazyCounter, 2338 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 1359 SdHoareTripleChecker+Invalid, 2349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 2338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:16:55,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 1359 Invalid, 2349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 2338 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-29 01:16:55,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87581 states. [2023-11-29 01:17:03,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87581 to 86774. [2023-11-29 01:17:03,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86774 states, 81362 states have (on average 1.0814262186278607) internal successors, (87987), 81365 states have internal predecessors, (87987), 5406 states have call successors, (5406), 2 states have call predecessors, (5406), 2 states have return successors, (5406), 5406 states have call predecessors, (5406), 5406 states have call successors, (5406) [2023-11-29 01:17:03,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86774 states to 86774 states and 98799 transitions. [2023-11-29 01:17:03,676 INFO L78 Accepts]: Start accepts. Automaton has 86774 states and 98799 transitions. Word has length 575 [2023-11-29 01:17:03,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:17:03,677 INFO L495 AbstractCegarLoop]: Abstraction has 86774 states and 98799 transitions. [2023-11-29 01:17:03,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 14.68) internal successors, (367), 25 states have internal predecessors, (367), 23 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 23 states have call predecessors, (26), 23 states have call successors, (26) [2023-11-29 01:17:03,677 INFO L276 IsEmpty]: Start isEmpty. Operand 86774 states and 98799 transitions. [2023-11-29 01:17:03,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 616 [2023-11-29 01:17:03,688 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:17:03,688 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 28, 28, 28, 28, 28, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:17:03,693 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Ended with exit code 0 [2023-11-29 01:17:03,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2023-11-29 01:17:03,889 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 01:17:03,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:17:03,889 INFO L85 PathProgramCache]: Analyzing trace with hash -2109296053, now seen corresponding path program 30 times [2023-11-29 01:17:03,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:17:03,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794675191] [2023-11-29 01:17:03,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:17:03,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:17:03,906 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:17:03,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1663777938] [2023-11-29 01:17:03,907 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 01:17:03,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:17:03,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:17:03,908 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:17:03,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2023-11-29 01:17:04,384 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 28 check-sat command(s) [2023-11-29 01:17:04,384 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:17:04,389 INFO L262 TraceCheckSpWp]: Trace formula consists of 842 conjuncts, 31 conjunts are in the unsatisfiable core [2023-11-29 01:17:04,397 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:17:05,938 INFO L134 CoverageAnalysis]: Checked inductivity of 8570 backedges. 0 proven. 5202 refuted. 0 times theorem prover too weak. 3368 trivial. 0 not checked. [2023-11-29 01:17:05,938 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:17:08,708 INFO L134 CoverageAnalysis]: Checked inductivity of 8570 backedges. 0 proven. 5202 refuted. 0 times theorem prover too weak. 3368 trivial. 0 not checked. [2023-11-29 01:17:08,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:17:08,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794675191] [2023-11-29 01:17:08,708 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:17:08,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1663777938] [2023-11-29 01:17:08,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1663777938] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:17:08,709 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:17:08,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19] total 38 [2023-11-29 01:17:08,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274148757] [2023-11-29 01:17:08,709 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:17:08,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-11-29 01:17:08,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:17:08,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-11-29 01:17:08,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=627, Invalid=855, Unknown=0, NotChecked=0, Total=1482 [2023-11-29 01:17:08,712 INFO L87 Difference]: Start difference. First operand 86774 states and 98799 transitions. Second operand has 39 states, 38 states have (on average 13.31578947368421) internal successors, (506), 39 states have internal predecessors, (506), 34 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 34 states have call predecessors, (36), 34 states have call successors, (36) [2023-11-29 01:17:19,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:17:19,794 INFO L93 Difference]: Finished difference Result 92871 states and 105802 transitions. [2023-11-29 01:17:19,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2023-11-29 01:17:19,795 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 38 states have (on average 13.31578947368421) internal successors, (506), 39 states have internal predecessors, (506), 34 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 34 states have call predecessors, (36), 34 states have call successors, (36) Word has length 615 [2023-11-29 01:17:19,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:17:19,886 INFO L225 Difference]: With dead ends: 92871 [2023-11-29 01:17:19,886 INFO L226 Difference]: Without dead ends: 92870 [2023-11-29 01:17:19,896 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1261 GetRequests, 1191 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1218 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=2139, Invalid=2973, Unknown=0, NotChecked=0, Total=5112 [2023-11-29 01:17:19,896 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 328 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 603 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 603 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:17:19,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [329 Valid, 325 Invalid, 617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 603 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-29 01:17:19,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92870 states. [2023-11-29 01:17:27,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92870 to 89817. [2023-11-29 01:17:27,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89817 states, 84215 states have (on average 1.082313127115122) internal successors, (91147), 84218 states have internal predecessors, (91147), 5596 states have call successors, (5596), 2 states have call predecessors, (5596), 2 states have return successors, (5596), 5596 states have call predecessors, (5596), 5596 states have call successors, (5596) [2023-11-29 01:17:27,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89817 states to 89817 states and 102339 transitions. [2023-11-29 01:17:27,830 INFO L78 Accepts]: Start accepts. Automaton has 89817 states and 102339 transitions. Word has length 615 [2023-11-29 01:17:27,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:17:27,831 INFO L495 AbstractCegarLoop]: Abstraction has 89817 states and 102339 transitions. [2023-11-29 01:17:27,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 38 states have (on average 13.31578947368421) internal successors, (506), 39 states have internal predecessors, (506), 34 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 34 states have call predecessors, (36), 34 states have call successors, (36) [2023-11-29 01:17:27,831 INFO L276 IsEmpty]: Start isEmpty. Operand 89817 states and 102339 transitions. [2023-11-29 01:17:27,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 638 [2023-11-29 01:17:27,843 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:17:27,843 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 32, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 30, 30, 30, 30, 30, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:17:27,848 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Ended with exit code 0 [2023-11-29 01:17:28,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,62 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:17:28,043 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 01:17:28,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:17:28,044 INFO L85 PathProgramCache]: Analyzing trace with hash -336072686, now seen corresponding path program 8 times [2023-11-29 01:17:28,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:17:28,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359872220] [2023-11-29 01:17:28,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:17:28,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:17:28,061 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:17:28,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1638437768] [2023-11-29 01:17:28,061 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:17:28,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:17:28,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:17:28,062 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:17:28,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2023-11-29 01:17:28,202 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 01:17:28,202 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:17:28,205 INFO L262 TraceCheckSpWp]: Trace formula consists of 925 conjuncts, 38 conjunts are in the unsatisfiable core [2023-11-29 01:17:28,211 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:17:29,186 INFO L134 CoverageAnalysis]: Checked inductivity of 9339 backedges. 90 proven. 7475 refuted. 0 times theorem prover too weak. 1774 trivial. 0 not checked. [2023-11-29 01:17:29,186 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:17:30,998 INFO L134 CoverageAnalysis]: Checked inductivity of 9339 backedges. 90 proven. 7475 refuted. 0 times theorem prover too weak. 1774 trivial. 0 not checked. [2023-11-29 01:17:30,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:17:30,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359872220] [2023-11-29 01:17:30,999 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:17:30,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1638437768] [2023-11-29 01:17:30,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1638437768] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:17:30,999 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:17:31,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 70 [2023-11-29 01:17:31,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37274497] [2023-11-29 01:17:31,000 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:17:31,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2023-11-29 01:17:31,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:17:31,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2023-11-29 01:17:31,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2038, Invalid=2932, Unknown=0, NotChecked=0, Total=4970 [2023-11-29 01:17:31,004 INFO L87 Difference]: Start difference. First operand 89817 states and 102339 transitions. Second operand has 71 states, 70 states have (on average 13.628571428571428) internal successors, (954), 71 states have internal predecessors, (954), 63 states have call successors, (64), 1 states have call predecessors, (64), 2 states have return successors, (64), 63 states have call predecessors, (64), 63 states have call successors, (64) [2023-11-29 01:17:57,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:17:57,727 INFO L93 Difference]: Finished difference Result 153292 states and 174595 transitions. [2023-11-29 01:17:57,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 222 states. [2023-11-29 01:17:57,727 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 70 states have (on average 13.628571428571428) internal successors, (954), 71 states have internal predecessors, (954), 63 states have call successors, (64), 1 states have call predecessors, (64), 2 states have return successors, (64), 63 states have call predecessors, (64), 63 states have call successors, (64) Word has length 637 [2023-11-29 01:17:57,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:17:57,890 INFO L225 Difference]: With dead ends: 153292 [2023-11-29 01:17:57,891 INFO L226 Difference]: Without dead ends: 153291 [2023-11-29 01:17:57,911 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1428 GetRequests, 1203 SyntacticMatches, 0 SemanticMatches, 225 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16496 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=17203, Invalid=34099, Unknown=0, NotChecked=0, Total=51302 [2023-11-29 01:17:57,911 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 1551 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 1454 mSolverCounterSat, 250 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1552 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 1704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 250 IncrementalHoareTripleChecker+Valid, 1454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-29 01:17:57,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1552 Valid, 243 Invalid, 1704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [250 Valid, 1454 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-29 01:17:57,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153291 states. [2023-11-29 01:18:19,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153291 to 152661. [2023-11-29 01:18:19,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152661 states, 143242 states have (on average 1.0548302872062663) internal successors, (151096), 143245 states have internal predecessors, (151096), 9413 states have call successors, (9413), 2 states have call predecessors, (9413), 2 states have return successors, (9413), 9413 states have call predecessors, (9413), 9413 states have call successors, (9413) [2023-11-29 01:18:19,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152661 states to 152661 states and 169922 transitions. [2023-11-29 01:18:19,374 INFO L78 Accepts]: Start accepts. Automaton has 152661 states and 169922 transitions. Word has length 637 [2023-11-29 01:18:19,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:18:19,375 INFO L495 AbstractCegarLoop]: Abstraction has 152661 states and 169922 transitions. [2023-11-29 01:18:19,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 70 states have (on average 13.628571428571428) internal successors, (954), 71 states have internal predecessors, (954), 63 states have call successors, (64), 1 states have call predecessors, (64), 2 states have return successors, (64), 63 states have call predecessors, (64), 63 states have call successors, (64) [2023-11-29 01:18:19,375 INFO L276 IsEmpty]: Start isEmpty. Operand 152661 states and 169922 transitions. [2023-11-29 01:18:19,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 716 [2023-11-29 01:18:19,392 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:18:19,392 INFO L195 NwaCegarLoop]: trace histogram [36, 36, 35, 35, 35, 35, 35, 35, 35, 35, 35, 35, 35, 35, 35, 28, 28, 28, 28, 28, 7, 7, 7, 7, 7, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:18:19,397 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Forceful destruction successful, exit code 0 [2023-11-29 01:18:19,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,63 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:18:19,593 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 01:18:19,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:18:19,593 INFO L85 PathProgramCache]: Analyzing trace with hash -723593528, now seen corresponding path program 31 times [2023-11-29 01:18:19,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:18:19,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545060213] [2023-11-29 01:18:19,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:18:19,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:18:19,619 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:18:19,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [395257955] [2023-11-29 01:18:19,619 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 01:18:19,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:18:19,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:18:19,620 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:18:19,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2023-11-29 01:18:19,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:18:19,843 INFO L262 TraceCheckSpWp]: Trace formula consists of 1053 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-29 01:18:19,849 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:18:21,049 INFO L134 CoverageAnalysis]: Checked inductivity of 11225 backedges. 0 proven. 7977 refuted. 0 times theorem prover too weak. 3248 trivial. 0 not checked. [2023-11-29 01:18:21,049 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:18:21,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:18:21,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545060213] [2023-11-29 01:18:21,130 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:18:21,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [395257955] [2023-11-29 01:18:21,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [395257955] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:18:21,130 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:18:21,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2023-11-29 01:18:21,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498788999] [2023-11-29 01:18:21,130 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 01:18:21,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 01:18:21,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:18:21,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 01:18:21,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2023-11-29 01:18:21,132 INFO L87 Difference]: Start difference. First operand 152661 states and 169922 transitions. Second operand has 15 states, 14 states have (on average 14.714285714285714) internal successors, (206), 15 states have internal predecessors, (206), 12 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) [2023-11-29 01:18:40,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:18:40,891 INFO L93 Difference]: Finished difference Result 152662 states and 169922 transitions. [2023-11-29 01:18:40,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 01:18:40,892 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 14.714285714285714) internal successors, (206), 15 states have internal predecessors, (206), 12 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) Word has length 715 [2023-11-29 01:18:40,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:18:41,088 INFO L225 Difference]: With dead ends: 152662 [2023-11-29 01:18:41,088 INFO L226 Difference]: Without dead ends: 152661 [2023-11-29 01:18:41,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 727 GetRequests, 711 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2023-11-29 01:18:41,106 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 27 mSDsluCounter, 447 mSDsCounter, 0 mSdLazyCounter, 943 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 504 SdHoareTripleChecker+Invalid, 943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 943 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:18:41,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 504 Invalid, 943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 943 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 01:18:41,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152661 states. [2023-11-29 01:19:00,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152661 to 152661. [2023-11-29 01:19:00,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152661 states, 143242 states have (on average 1.0548233060135994) internal successors, (151095), 143245 states have internal predecessors, (151095), 9413 states have call successors, (9413), 2 states have call predecessors, (9413), 2 states have return successors, (9413), 9413 states have call predecessors, (9413), 9413 states have call successors, (9413) [2023-11-29 01:19:01,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152661 states to 152661 states and 169921 transitions. [2023-11-29 01:19:01,110 INFO L78 Accepts]: Start accepts. Automaton has 152661 states and 169921 transitions. Word has length 715 [2023-11-29 01:19:01,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:19:01,110 INFO L495 AbstractCegarLoop]: Abstraction has 152661 states and 169921 transitions. [2023-11-29 01:19:01,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 14.714285714285714) internal successors, (206), 15 states have internal predecessors, (206), 12 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) [2023-11-29 01:19:01,110 INFO L276 IsEmpty]: Start isEmpty. Operand 152661 states and 169921 transitions. [2023-11-29 01:19:01,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 791 [2023-11-29 01:19:01,135 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:19:01,135 INFO L195 NwaCegarLoop]: trace histogram [39, 39, 39, 39, 39, 39, 39, 39, 39, 39, 39, 39, 39, 39, 39, 39, 39, 38, 38, 38, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:19:01,141 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Ended with exit code 0 [2023-11-29 01:19:01,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,64 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:19:01,336 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 01:19:01,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:19:01,336 INFO L85 PathProgramCache]: Analyzing trace with hash -732872440, now seen corresponding path program 4 times [2023-11-29 01:19:01,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:19:01,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019859956] [2023-11-29 01:19:01,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:19:01,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:19:01,360 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:19:01,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1621052288] [2023-11-29 01:19:01,360 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 01:19:01,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:19:01,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:19:01,361 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:19:01,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2023-11-29 01:19:01,564 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 01:19:01,564 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:19:01,568 INFO L262 TraceCheckSpWp]: Trace formula consists of 1250 conjuncts, 40 conjunts are in the unsatisfiable core [2023-11-29 01:19:01,576 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:19:02,610 INFO L134 CoverageAnalysis]: Checked inductivity of 14748 backedges. 0 proven. 11780 refuted. 0 times theorem prover too weak. 2968 trivial. 0 not checked. [2023-11-29 01:19:02,611 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:19:04,590 INFO L134 CoverageAnalysis]: Checked inductivity of 14748 backedges. 0 proven. 11780 refuted. 0 times theorem prover too weak. 2968 trivial. 0 not checked. [2023-11-29 01:19:04,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:19:04,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019859956] [2023-11-29 01:19:04,591 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:19:04,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621052288] [2023-11-29 01:19:04,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1621052288] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:19:04,591 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:19:04,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 79 [2023-11-29 01:19:04,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763956099] [2023-11-29 01:19:04,592 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:19:04,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2023-11-29 01:19:04,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:19:04,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2023-11-29 01:19:04,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3160, Invalid=3160, Unknown=0, NotChecked=0, Total=6320 [2023-11-29 01:19:04,596 INFO L87 Difference]: Start difference. First operand 152661 states and 169921 transitions. Second operand has 80 states, 79 states have (on average 14.873417721518987) internal successors, (1175), 80 states have internal predecessors, (1175), 79 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 79 states have call predecessors, (80), 79 states have call successors, (80) [2023-11-29 01:20:07,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:20:07,082 INFO L93 Difference]: Finished difference Result 297230 states and 334077 transitions. [2023-11-29 01:20:07,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2023-11-29 01:20:07,083 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 79 states have (on average 14.873417721518987) internal successors, (1175), 80 states have internal predecessors, (1175), 79 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 79 states have call predecessors, (80), 79 states have call successors, (80) Word has length 790 [2023-11-29 01:20:07,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:20:07,494 INFO L225 Difference]: With dead ends: 297230 [2023-11-29 01:20:07,494 INFO L226 Difference]: Without dead ends: 297229 [2023-11-29 01:20:07,539 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1578 GetRequests, 1500 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=3160, Invalid=3160, Unknown=0, NotChecked=0, Total=6320 [2023-11-29 01:20:07,540 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 2106 mSDsluCounter, 1092 mSDsCounter, 0 mSdLazyCounter, 911 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2106 SdHoareTripleChecker+Valid, 1119 SdHoareTripleChecker+Invalid, 912 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 911 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:20:07,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2106 Valid, 1119 Invalid, 912 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 911 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-11-29 01:20:07,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297229 states. [2023-11-29 01:20:34,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297229 to 236461. [2023-11-29 01:20:34,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236461 states, 221802 states have (on average 1.067325813112596) internal successors, (236735), 221805 states have internal predecessors, (236735), 14653 states have call successors, (14653), 2 states have call predecessors, (14653), 2 states have return successors, (14653), 14653 states have call predecessors, (14653), 14653 states have call successors, (14653) [2023-11-29 01:20:34,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236461 states to 236461 states and 266041 transitions. [2023-11-29 01:20:34,799 INFO L78 Accepts]: Start accepts. Automaton has 236461 states and 266041 transitions. Word has length 790 [2023-11-29 01:20:34,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:20:34,800 INFO L495 AbstractCegarLoop]: Abstraction has 236461 states and 266041 transitions. [2023-11-29 01:20:34,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 79 states have (on average 14.873417721518987) internal successors, (1175), 80 states have internal predecessors, (1175), 79 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 79 states have call predecessors, (80), 79 states have call successors, (80) [2023-11-29 01:20:34,800 INFO L276 IsEmpty]: Start isEmpty. Operand 236461 states and 266041 transitions. [2023-11-29 01:20:34,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 816 [2023-11-29 01:20:34,823 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:20:34,824 INFO L195 NwaCegarLoop]: trace histogram [41, 41, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 32, 32, 32, 32, 32, 8, 8, 8, 8, 8, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:20:34,829 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Ended with exit code 0 [2023-11-29 01:20:35,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,65 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:20:35,024 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 01:20:35,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:20:35,025 INFO L85 PathProgramCache]: Analyzing trace with hash -1397284451, now seen corresponding path program 32 times [2023-11-29 01:20:35,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:20:35,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219177747] [2023-11-29 01:20:35,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:20:35,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:20:35,046 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:20:35,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1074174152] [2023-11-29 01:20:35,047 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:20:35,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:20:35,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:20:35,048 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:20:35,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2023-11-29 01:20:35,249 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 01:20:35,249 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:20:35,254 INFO L262 TraceCheckSpWp]: Trace formula consists of 1196 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-29 01:20:35,260 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:20:37,009 INFO L134 CoverageAnalysis]: Checked inductivity of 14700 backedges. 0 proven. 10568 refuted. 0 times theorem prover too weak. 4132 trivial. 0 not checked. [2023-11-29 01:20:37,010 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:20:37,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:20:37,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219177747] [2023-11-29 01:20:37,104 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:20:37,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1074174152] [2023-11-29 01:20:37,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1074174152] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:20:37,105 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:20:37,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2023-11-29 01:20:37,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561002463] [2023-11-29 01:20:37,105 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 01:20:37,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 01:20:37,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:20:37,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 01:20:37,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2023-11-29 01:20:37,107 INFO L87 Difference]: Start difference. First operand 236461 states and 266041 transitions. Second operand has 16 states, 15 states have (on average 15.066666666666666) internal successors, (226), 16 states have internal predecessors, (226), 13 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 13 states have call predecessors, (14), 13 states have call successors, (14) [2023-11-29 01:21:01,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:21:01,057 INFO L93 Difference]: Finished difference Result 236462 states and 266041 transitions. [2023-11-29 01:21:01,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 01:21:01,057 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 15.066666666666666) internal successors, (226), 16 states have internal predecessors, (226), 13 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 13 states have call predecessors, (14), 13 states have call successors, (14) Word has length 815 [2023-11-29 01:21:01,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:21:01,322 INFO L225 Difference]: With dead ends: 236462 [2023-11-29 01:21:01,322 INFO L226 Difference]: Without dead ends: 236461 [2023-11-29 01:21:01,346 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 827 GetRequests, 810 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2023-11-29 01:21:01,347 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 27 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 804 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 804 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:21:01,347 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 442 Invalid, 804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 804 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 01:21:01,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236461 states. [2023-11-29 01:21:26,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236461 to 236461. [2023-11-29 01:21:26,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236461 states, 221802 states have (on average 1.067321304586974) internal successors, (236734), 221805 states have internal predecessors, (236734), 14653 states have call successors, (14653), 2 states have call predecessors, (14653), 2 states have return successors, (14653), 14653 states have call predecessors, (14653), 14653 states have call successors, (14653) [2023-11-29 01:21:27,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236461 states to 236461 states and 266040 transitions. [2023-11-29 01:21:27,506 INFO L78 Accepts]: Start accepts. Automaton has 236461 states and 266040 transitions. Word has length 815 [2023-11-29 01:21:27,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:21:27,506 INFO L495 AbstractCegarLoop]: Abstraction has 236461 states and 266040 transitions. [2023-11-29 01:21:27,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 15.066666666666666) internal successors, (226), 16 states have internal predecessors, (226), 13 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 13 states have call predecessors, (14), 13 states have call successors, (14) [2023-11-29 01:21:27,506 INFO L276 IsEmpty]: Start isEmpty. Operand 236461 states and 266040 transitions. [2023-11-29 01:21:27,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 856 [2023-11-29 01:21:27,757 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:21:27,757 INFO L195 NwaCegarLoop]: trace histogram [43, 43, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 35, 35, 35, 35, 35, 7, 7, 7, 7, 7, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:21:27,762 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Ended with exit code 0 [2023-11-29 01:21:27,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2023-11-29 01:21:27,958 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 01:21:27,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:21:27,958 INFO L85 PathProgramCache]: Analyzing trace with hash 106426609, now seen corresponding path program 33 times [2023-11-29 01:21:27,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:21:27,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896433110] [2023-11-29 01:21:27,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:21:27,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:21:27,980 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:21:27,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [99593384] [2023-11-29 01:21:27,980 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 01:21:27,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:21:27,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:21:27,981 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:21:27,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2023-11-29 01:21:28,073 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2023-11-29 01:21:28,074 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:21:28,075 INFO L262 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 45 conjunts are in the unsatisfiable core [2023-11-29 01:21:28,082 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:21:38,168 INFO L134 CoverageAnalysis]: Checked inductivity of 16370 backedges. 3684 proven. 281 refuted. 0 times theorem prover too weak. 12405 trivial. 0 not checked. [2023-11-29 01:21:38,168 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:21:39,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:21:39,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896433110] [2023-11-29 01:21:39,086 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:21:39,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [99593384] [2023-11-29 01:21:39,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [99593384] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:21:39,086 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:21:39,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2023-11-29 01:21:39,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806161163] [2023-11-29 01:21:39,087 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 01:21:39,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-29 01:21:39,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:21:39,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-29 01:21:39,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=709, Unknown=5, NotChecked=0, Total=812 [2023-11-29 01:21:39,088 INFO L87 Difference]: Start difference. First operand 236461 states and 266040 transitions. Second operand has 25 states, 24 states have (on average 5.625) internal successors, (135), 25 states have internal predecessors, (135), 8 states have call successors, (9), 1 states have call predecessors, (9), 3 states have return successors, (10), 9 states have call predecessors, (10), 8 states have call successors, (10) [2023-11-29 01:21:42,060 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 01:21:45,052 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 01:21:49,068 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 01:21:54,698 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 01:22:24,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:22:24,047 INFO L93 Difference]: Finished difference Result 239760 states and 269572 transitions. [2023-11-29 01:22:24,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2023-11-29 01:22:24,047 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 5.625) internal successors, (135), 25 states have internal predecessors, (135), 8 states have call successors, (9), 1 states have call predecessors, (9), 3 states have return successors, (10), 9 states have call predecessors, (10), 8 states have call successors, (10) Word has length 855 [2023-11-29 01:22:24,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:22:24,343 INFO L225 Difference]: With dead ends: 239760 [2023-11-29 01:22:24,343 INFO L226 Difference]: Without dead ends: 235346 [2023-11-29 01:22:24,370 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 899 GetRequests, 839 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 875 ImplicationChecksByTransitivity, 13.1s TimeCoverageRelationStatistics Valid=425, Invalid=3352, Unknown=5, NotChecked=0, Total=3782 [2023-11-29 01:22:24,371 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 207 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 3160 mSolverCounterSat, 22 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 3188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 3160 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.9s IncrementalHoareTripleChecker+Time [2023-11-29 01:22:24,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 287 Invalid, 3188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 3160 Invalid, 6 Unknown, 0 Unchecked, 16.9s Time] [2023-11-29 01:22:24,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235346 states. [2023-11-29 01:22:50,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235346 to 228844. [2023-11-29 01:22:50,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228844 states, 214661 states have (on average 1.067245563935694) internal successors, (229096), 214664 states have internal predecessors, (229096), 14177 states have call successors, (14177), 2 states have call predecessors, (14177), 2 states have return successors, (14177), 14177 states have call predecessors, (14177), 14177 states have call successors, (14177) [2023-11-29 01:22:51,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228844 states to 228844 states and 257450 transitions. [2023-11-29 01:22:51,167 INFO L78 Accepts]: Start accepts. Automaton has 228844 states and 257450 transitions. Word has length 855 [2023-11-29 01:22:51,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:22:51,167 INFO L495 AbstractCegarLoop]: Abstraction has 228844 states and 257450 transitions. [2023-11-29 01:22:51,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 5.625) internal successors, (135), 25 states have internal predecessors, (135), 8 states have call successors, (9), 1 states have call predecessors, (9), 3 states have return successors, (10), 9 states have call predecessors, (10), 8 states have call successors, (10) [2023-11-29 01:22:51,167 INFO L276 IsEmpty]: Start isEmpty. Operand 228844 states and 257450 transitions. [2023-11-29 01:22:51,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 856 [2023-11-29 01:22:51,194 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:22:51,194 INFO L195 NwaCegarLoop]: trace histogram [43, 43, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 28, 28, 28, 28, 28, 14, 14, 14, 14, 14, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:22:51,199 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Ended with exit code 0 [2023-11-29 01:22:51,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2023-11-29 01:22:51,395 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 01:22:51,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:22:51,395 INFO L85 PathProgramCache]: Analyzing trace with hash -1244163465, now seen corresponding path program 34 times [2023-11-29 01:22:51,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:22:51,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048632186] [2023-11-29 01:22:51,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:22:51,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:22:51,417 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:22:51,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [432954144] [2023-11-29 01:22:51,418 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 01:22:51,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:22:51,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:22:51,419 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:22:51,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2023-11-29 01:22:51,655 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 01:22:51,655 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:22:51,660 INFO L262 TraceCheckSpWp]: Trace formula consists of 1270 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-29 01:22:51,666 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:22:53,444 INFO L134 CoverageAnalysis]: Checked inductivity of 15782 backedges. 0 proven. 11814 refuted. 0 times theorem prover too weak. 3968 trivial. 0 not checked. [2023-11-29 01:22:53,445 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:22:53,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:22:53,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048632186] [2023-11-29 01:22:53,569 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:22:53,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [432954144] [2023-11-29 01:22:53,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [432954144] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:22:53,569 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:22:53,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2023-11-29 01:22:53,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982511303] [2023-11-29 01:22:53,570 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 01:22:53,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-29 01:22:53,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:22:53,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-29 01:22:53,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=285, Unknown=0, NotChecked=0, Total=462 [2023-11-29 01:22:53,571 INFO L87 Difference]: Start difference. First operand 228844 states and 257450 transitions. Second operand has 20 states, 19 states have (on average 16.63157894736842) internal successors, (316), 20 states have internal predecessors, (316), 17 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 17 states have call predecessors, (18), 17 states have call successors, (18) [2023-11-29 01:23:17,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:23:17,989 INFO L93 Difference]: Finished difference Result 228845 states and 257450 transitions. [2023-11-29 01:23:17,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-29 01:23:17,989 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 16.63157894736842) internal successors, (316), 20 states have internal predecessors, (316), 17 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 17 states have call predecessors, (18), 17 states have call successors, (18) Word has length 855 [2023-11-29 01:23:17,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:23:18,257 INFO L225 Difference]: With dead ends: 228845 [2023-11-29 01:23:18,257 INFO L226 Difference]: Without dead ends: 228844 [2023-11-29 01:23:18,277 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 867 GetRequests, 846 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=197, Invalid=309, Unknown=0, NotChecked=0, Total=506 [2023-11-29 01:23:18,278 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 23 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 545 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 379 SdHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:23:18,278 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 379 Invalid, 545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 545 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 01:23:18,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228844 states. [2023-11-29 01:23:44,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228844 to 228844. [2023-11-29 01:23:44,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228844 states, 214661 states have (on average 1.0672409054276277) internal successors, (229095), 214664 states have internal predecessors, (229095), 14177 states have call successors, (14177), 2 states have call predecessors, (14177), 2 states have return successors, (14177), 14177 states have call predecessors, (14177), 14177 states have call successors, (14177) [2023-11-29 01:23:44,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228844 states to 228844 states and 257449 transitions. [2023-11-29 01:23:44,720 INFO L78 Accepts]: Start accepts. Automaton has 228844 states and 257449 transitions. Word has length 855 [2023-11-29 01:23:44,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:23:44,720 INFO L495 AbstractCegarLoop]: Abstraction has 228844 states and 257449 transitions. [2023-11-29 01:23:44,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 16.63157894736842) internal successors, (316), 20 states have internal predecessors, (316), 17 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 17 states have call predecessors, (18), 17 states have call successors, (18) [2023-11-29 01:23:44,721 INFO L276 IsEmpty]: Start isEmpty. Operand 228844 states and 257449 transitions. [2023-11-29 01:23:44,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 896 [2023-11-29 01:23:44,762 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:23:44,763 INFO L195 NwaCegarLoop]: trace histogram [45, 45, 44, 44, 44, 44, 44, 44, 44, 44, 44, 44, 44, 44, 44, 41, 41, 41, 41, 41, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:23:44,769 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Forceful destruction successful, exit code 0 [2023-11-29 01:23:44,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2023-11-29 01:23:44,963 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 01:23:44,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:23:44,963 INFO L85 PathProgramCache]: Analyzing trace with hash 1985428199, now seen corresponding path program 35 times [2023-11-29 01:23:44,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:23:44,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651172610] [2023-11-29 01:23:44,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:23:44,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:23:45,201 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:23:45,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1106408468] [2023-11-29 01:23:45,201 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 01:23:45,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:23:45,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:23:45,202 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:23:45,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2afbd3b2-a907-4e26-b92b-64f84f23cfae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2023-11-29 01:23:45,580 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 45 check-sat command(s) [2023-11-29 01:23:45,580 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:23:45,585 INFO L262 TraceCheckSpWp]: Trace formula consists of 1293 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-29 01:23:45,592 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:23:46,599 INFO L134 CoverageAnalysis]: Checked inductivity of 18564 backedges. 10134 proven. 4872 refuted. 0 times theorem prover too weak. 3558 trivial. 0 not checked. [2023-11-29 01:23:46,599 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:23:47,408 INFO L134 CoverageAnalysis]: Checked inductivity of 18564 backedges. 8454 proven. 4872 refuted. 0 times theorem prover too weak. 5238 trivial. 0 not checked. [2023-11-29 01:23:47,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:23:47,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651172610] [2023-11-29 01:23:47,408 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:23:47,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1106408468] [2023-11-29 01:23:47,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1106408468] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:23:47,408 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:23:47,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 49 [2023-11-29 01:23:47,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616107227] [2023-11-29 01:23:47,409 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:23:47,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-11-29 01:23:47,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:23:47,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-11-29 01:23:47,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=560, Invalid=1792, Unknown=0, NotChecked=0, Total=2352 [2023-11-29 01:23:47,413 INFO L87 Difference]: Start difference. First operand 228844 states and 257449 transitions. Second operand has 49 states, 49 states have (on average 14.387755102040817) internal successors, (705), 49 states have internal predecessors, (705), 47 states have call successors, (49), 2 states have call predecessors, (49), 2 states have return successors, (49), 47 states have call predecessors, (49), 47 states have call successors, (49)