./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_valuebound10.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_valuebound10.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 879a640f466eee273c1bfb9ec38819f0b05c8e28dd65a68aba774d943b257ad3 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 16:17:16,547 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 16:17:16,613 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-12-02 16:17:16,618 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 16:17:16,618 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 16:17:16,640 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 16:17:16,640 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 16:17:16,641 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 16:17:16,641 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 16:17:16,642 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 16:17:16,643 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 16:17:16,643 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 16:17:16,644 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 16:17:16,644 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 16:17:16,645 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 16:17:16,645 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 16:17:16,646 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 16:17:16,646 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 16:17:16,647 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 16:17:16,647 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 16:17:16,648 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 16:17:16,649 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 16:17:16,650 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 16:17:16,650 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 16:17:16,650 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 16:17:16,651 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 16:17:16,651 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 16:17:16,652 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 16:17:16,652 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 16:17:16,653 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 16:17:16,653 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 16:17:16,653 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-12-02 16:17:16,654 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 16:17:16,654 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 16:17:16,654 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 16:17:16,654 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 16:17:16,655 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 16:17:16,655 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 16:17:16,655 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 16:17:16,655 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 16:17:16,656 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 16:17:16,656 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 16:17:16,656 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 16:17:16,656 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 16:17:16,656 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 16:17:16,657 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 16:17:16,657 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 16:17:16,657 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 16:17:16,657 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 16:17:16,657 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 879a640f466eee273c1bfb9ec38819f0b05c8e28dd65a68aba774d943b257ad3 [2023-12-02 16:17:16,851 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 16:17:16,879 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 16:17:16,882 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 16:17:16,883 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 16:17:16,884 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 16:17:16,884 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_valuebound10.c [2023-12-02 16:17:19,780 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 16:17:19,956 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 16:17:19,956 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_valuebound10.c [2023-12-02 16:17:19,964 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/data/66703468b/ea7b3a7d81d84ed8b754a83bd4fc4fe4/FLAGaea3d2c2b [2023-12-02 16:17:19,979 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/data/66703468b/ea7b3a7d81d84ed8b754a83bd4fc4fe4 [2023-12-02 16:17:19,982 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 16:17:19,984 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 16:17:19,985 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 16:17:19,985 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 16:17:19,989 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 16:17:19,990 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 04:17:19" (1/1) ... [2023-12-02 16:17:19,991 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8eaa3eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:17:19, skipping insertion in model container [2023-12-02 16:17:19,992 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 04:17:19" (1/1) ... [2023-12-02 16:17:20,012 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 16:17:20,155 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 16:17:20,166 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 16:17:20,186 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 16:17:20,199 INFO L206 MainTranslator]: Completed translation [2023-12-02 16:17:20,199 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:17:20 WrapperNode [2023-12-02 16:17:20,199 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 16:17:20,200 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 16:17:20,200 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 16:17:20,201 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 16:17:20,206 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:17:20" (1/1) ... [2023-12-02 16:17:20,213 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:17:20" (1/1) ... [2023-12-02 16:17:20,239 INFO L138 Inliner]: procedures = 14, calls = 14, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 102 [2023-12-02 16:17:20,240 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 16:17:20,240 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 16:17:20,241 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 16:17:20,241 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 16:17:20,249 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:17:20" (1/1) ... [2023-12-02 16:17:20,249 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:17:20" (1/1) ... [2023-12-02 16:17:20,251 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:17:20" (1/1) ... [2023-12-02 16:17:20,251 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:17:20" (1/1) ... [2023-12-02 16:17:20,256 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:17:20" (1/1) ... [2023-12-02 16:17:20,259 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:17:20" (1/1) ... [2023-12-02 16:17:20,261 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:17:20" (1/1) ... [2023-12-02 16:17:20,262 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:17:20" (1/1) ... [2023-12-02 16:17:20,264 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 16:17:20,265 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 16:17:20,265 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 16:17:20,265 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 16:17:20,266 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:17:20" (1/1) ... [2023-12-02 16:17:20,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 16:17:20,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:17:20,294 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 16:17:20,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 16:17:20,326 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 16:17:20,326 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-02 16:17:20,327 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-02 16:17:20,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 16:17:20,327 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 16:17:20,327 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 16:17:20,327 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-02 16:17:20,328 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-02 16:17:20,387 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 16:17:20,389 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 16:17:20,732 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 16:17:20,763 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 16:17:20,763 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 16:17:20,765 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:17:20 BoogieIcfgContainer [2023-12-02 16:17:20,766 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 16:17:20,769 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 16:17:20,769 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 16:17:20,772 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 16:17:20,773 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 04:17:19" (1/3) ... [2023-12-02 16:17:20,773 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70a12966 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 04:17:20, skipping insertion in model container [2023-12-02 16:17:20,774 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:17:20" (2/3) ... [2023-12-02 16:17:20,774 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70a12966 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 04:17:20, skipping insertion in model container [2023-12-02 16:17:20,774 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:17:20" (3/3) ... [2023-12-02 16:17:20,776 INFO L112 eAbstractionObserver]: Analyzing ICFG prod4br-ll_valuebound10.c [2023-12-02 16:17:20,796 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 16:17:20,796 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 42 error locations. [2023-12-02 16:17:20,848 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 16:17:20,855 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=FINITE_AUTOMATA, 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;@1b4eb491, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 16:17:20,855 INFO L358 AbstractCegarLoop]: Starting to check reachability of 42 error locations. [2023-12-02 16:17:20,859 INFO L276 IsEmpty]: Start isEmpty. Operand has 104 states, 53 states have (on average 1.8867924528301887) internal successors, (100), 95 states have internal predecessors, (100), 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) [2023-12-02 16:17:20,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-12-02 16:17:20,866 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:17:20,867 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:17:20,867 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-12-02 16:17:20,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:17:20,871 INFO L85 PathProgramCache]: Analyzing trace with hash -849835587, now seen corresponding path program 1 times [2023-12-02 16:17:20,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:17:20,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680759700] [2023-12-02 16:17:20,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:17:20,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:17:20,963 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 16:17:20,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [946169285] [2023-12-02 16:17:20,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:17:20,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:17:20,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:17:20,968 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:17:20,973 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 16:17:21,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:17:21,029 INFO L262 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-02 16:17:21,035 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:17:21,175 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 16:17:21,175 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:17:21,500 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:17:21,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680759700] [2023-12-02 16:17:21,501 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 16:17:21,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [946169285] [2023-12-02 16:17:21,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [946169285] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:17:21,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1174984310] [2023-12-02 16:17:21,522 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2023-12-02 16:17:21,523 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 16:17:21,526 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 16:17:21,531 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 16:17:21,531 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 16:17:22,092 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 16:17:22,095 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 16:17:22,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1174984310] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:17:22,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 16:17:22,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [5] total 13 [2023-12-02 16:17:22,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479967014] [2023-12-02 16:17:22,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:17:22,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-02 16:17:22,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:17:22,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-02 16:17:22,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2023-12-02 16:17:22,558 INFO L87 Difference]: Start difference. First operand has 104 states, 53 states have (on average 1.8867924528301887) internal successors, (100), 95 states have internal predecessors, (100), 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) Second operand has 10 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 16:17:23,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:17:23,149 INFO L93 Difference]: Finished difference Result 159 states and 183 transitions. [2023-12-02 16:17:23,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-02 16:17:23,152 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 14 [2023-12-02 16:17:23,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:17:23,160 INFO L225 Difference]: With dead ends: 159 [2023-12-02 16:17:23,160 INFO L226 Difference]: Without dead ends: 119 [2023-12-02 16:17:23,163 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2023-12-02 16:17:23,167 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 378 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 16:17:23,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [384 Valid, 131 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 16:17:23,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2023-12-02 16:17:23,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2023-12-02 16:17:23,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 73 states have (on average 1.6027397260273972) internal successors, (117), 110 states have internal predecessors, (117), 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) [2023-12-02 16:17:23,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 129 transitions. [2023-12-02 16:17:23,217 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 129 transitions. Word has length 14 [2023-12-02 16:17:23,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:17:23,219 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 129 transitions. [2023-12-02 16:17:23,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 16:17:23,219 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 129 transitions. [2023-12-02 16:17:23,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-12-02 16:17:23,221 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:17:23,221 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:17:23,228 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 16:17:23,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-02 16:17:23,424 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-12-02 16:17:23,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:17:23,425 INFO L85 PathProgramCache]: Analyzing trace with hash -627355117, now seen corresponding path program 1 times [2023-12-02 16:17:23,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:17:23,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937595008] [2023-12-02 16:17:23,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:17:23,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:17:23,443 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 16:17:23,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [942338335] [2023-12-02 16:17:23,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:17:23,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:17:23,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:17:23,445 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:17:23,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 16:17:23,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:17:23,505 INFO L262 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 16:17:23,508 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:17:23,572 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 16:17:23,573 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:17:23,573 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:17:23,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937595008] [2023-12-02 16:17:23,573 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 16:17:23,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [942338335] [2023-12-02 16:17:23,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [942338335] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:17:23,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:17:23,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 16:17:23,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641926628] [2023-12-02 16:17:23,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:17:23,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 16:17:23,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:17:23,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 16:17:23,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 16:17:23,577 INFO L87 Difference]: Start difference. First operand 119 states and 129 transitions. Second operand has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 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) [2023-12-02 16:17:23,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:17:23,985 INFO L93 Difference]: Finished difference Result 297 states and 326 transitions. [2023-12-02 16:17:23,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 16:17:23,986 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 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 29 [2023-12-02 16:17:23,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:17:23,988 INFO L225 Difference]: With dead ends: 297 [2023-12-02 16:17:23,989 INFO L226 Difference]: Without dead ends: 208 [2023-12-02 16:17:23,990 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-02 16:17:23,991 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 234 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 16:17:23,992 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 123 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 16:17:23,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2023-12-02 16:17:24,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 161. [2023-12-02 16:17:24,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 114 states have (on average 1.6578947368421053) internal successors, (189), 150 states have internal predecessors, (189), 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) [2023-12-02 16:17:24,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 205 transitions. [2023-12-02 16:17:24,018 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 205 transitions. Word has length 29 [2023-12-02 16:17:24,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:17:24,019 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 205 transitions. [2023-12-02 16:17:24,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 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) [2023-12-02 16:17:24,019 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 205 transitions. [2023-12-02 16:17:24,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-12-02 16:17:24,020 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:17:24,021 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:17:24,027 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-02 16:17:24,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:17:24,224 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-12-02 16:17:24,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:17:24,225 INFO L85 PathProgramCache]: Analyzing trace with hash 2040218986, now seen corresponding path program 1 times [2023-12-02 16:17:24,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:17:24,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148359831] [2023-12-02 16:17:24,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:17:24,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:17:24,241 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 16:17:24,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1793803906] [2023-12-02 16:17:24,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:17:24,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:17:24,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:17:24,243 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:17:24,248 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-02 16:17:24,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:17:24,297 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 16:17:24,299 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:17:24,371 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 16:17:24,371 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:17:24,371 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:17:24,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148359831] [2023-12-02 16:17:24,371 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 16:17:24,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1793803906] [2023-12-02 16:17:24,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1793803906] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:17:24,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:17:24,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 16:17:24,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232234309] [2023-12-02 16:17:24,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:17:24,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 16:17:24,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:17:24,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 16:17:24,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 16:17:24,374 INFO L87 Difference]: Start difference. First operand 161 states and 205 transitions. Second operand has 5 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-02 16:17:24,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:17:24,731 INFO L93 Difference]: Finished difference Result 214 states and 262 transitions. [2023-12-02 16:17:24,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 16:17:24,732 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 30 [2023-12-02 16:17:24,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:17:24,735 INFO L225 Difference]: With dead ends: 214 [2023-12-02 16:17:24,735 INFO L226 Difference]: Without dead ends: 213 [2023-12-02 16:17:24,735 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-02 16:17:24,737 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 163 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 16:17:24,737 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 167 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 16:17:24,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2023-12-02 16:17:24,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 180. [2023-12-02 16:17:24,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 132 states have (on average 1.6742424242424243) internal successors, (221), 168 states have internal predecessors, (221), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-02 16:17:24,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 239 transitions. [2023-12-02 16:17:24,759 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 239 transitions. Word has length 30 [2023-12-02 16:17:24,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:17:24,759 INFO L495 AbstractCegarLoop]: Abstraction has 180 states and 239 transitions. [2023-12-02 16:17:24,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-02 16:17:24,760 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 239 transitions. [2023-12-02 16:17:24,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-12-02 16:17:24,761 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:17:24,761 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:17:24,766 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-02 16:17:24,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:17:24,966 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-12-02 16:17:24,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:17:24,967 INFO L85 PathProgramCache]: Analyzing trace with hash 2026827932, now seen corresponding path program 1 times [2023-12-02 16:17:24,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:17:24,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523369238] [2023-12-02 16:17:24,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:17:24,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:17:24,980 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 16:17:24,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1156533410] [2023-12-02 16:17:24,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:17:24,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:17:24,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:17:24,982 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:17:24,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-02 16:17:25,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:17:25,029 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 16:17:25,031 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:17:25,079 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 16:17:25,079 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:17:25,079 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:17:25,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523369238] [2023-12-02 16:17:25,080 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 16:17:25,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1156533410] [2023-12-02 16:17:25,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1156533410] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:17:25,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:17:25,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 16:17:25,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927538515] [2023-12-02 16:17:25,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:17:25,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 16:17:25,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:17:25,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 16:17:25,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 16:17:25,082 INFO L87 Difference]: Start difference. First operand 180 states and 239 transitions. Second operand has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 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) [2023-12-02 16:17:25,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:17:25,899 INFO L93 Difference]: Finished difference Result 302 states and 376 transitions. [2023-12-02 16:17:25,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 16:17:25,899 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 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 30 [2023-12-02 16:17:25,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:17:25,901 INFO L225 Difference]: With dead ends: 302 [2023-12-02 16:17:25,901 INFO L226 Difference]: Without dead ends: 214 [2023-12-02 16:17:25,902 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-02 16:17:25,903 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 198 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-02 16:17:25,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 81 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-02 16:17:25,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2023-12-02 16:17:25,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 189. [2023-12-02 16:17:25,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 143 states have (on average 1.6573426573426573) internal successors, (237), 176 states have internal predecessors, (237), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-12-02 16:17:25,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 257 transitions. [2023-12-02 16:17:25,919 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 257 transitions. Word has length 30 [2023-12-02 16:17:25,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:17:25,919 INFO L495 AbstractCegarLoop]: Abstraction has 189 states and 257 transitions. [2023-12-02 16:17:25,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 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) [2023-12-02 16:17:25,920 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 257 transitions. [2023-12-02 16:17:25,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-12-02 16:17:25,921 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:17:25,921 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:17:25,926 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-02 16:17:26,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:17:26,124 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-12-02 16:17:26,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:17:26,124 INFO L85 PathProgramCache]: Analyzing trace with hash -1164329724, now seen corresponding path program 1 times [2023-12-02 16:17:26,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:17:26,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037918811] [2023-12-02 16:17:26,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:17:26,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:17:26,135 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 16:17:26,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [462476628] [2023-12-02 16:17:26,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:17:26,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:17:26,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:17:26,136 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:17:26,137 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-02 16:17:26,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:17:26,178 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 16:17:26,179 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:17:26,283 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 16:17:26,284 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:17:26,379 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:17:26,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037918811] [2023-12-02 16:17:26,379 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 16:17:26,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [462476628] [2023-12-02 16:17:26,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [462476628] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:17:26,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2139289984] [2023-12-02 16:17:26,383 INFO L159 IcfgInterpreter]: Started Sifa with 28 locations of interest [2023-12-02 16:17:26,383 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 16:17:26,383 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 16:17:26,383 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 16:17:26,383 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 16:17:26,863 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 49 for LOIs [2023-12-02 16:17:26,876 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 16:17:26,877 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 16:17:29,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [2139289984] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:17:29,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 16:17:29,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [5] total 20 [2023-12-02 16:17:29,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604170835] [2023-12-02 16:17:29,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:17:29,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-02 16:17:29,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:17:29,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-02 16:17:29,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=356, Unknown=0, NotChecked=0, Total=506 [2023-12-02 16:17:29,044 INFO L87 Difference]: Start difference. First operand 189 states and 257 transitions. Second operand has 17 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 states have internal predecessors, (21), 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) [2023-12-02 16:17:29,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:17:29,736 INFO L93 Difference]: Finished difference Result 201 states and 268 transitions. [2023-12-02 16:17:29,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-02 16:17:29,737 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 states have internal predecessors, (21), 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) Word has length 31 [2023-12-02 16:17:29,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:17:29,739 INFO L225 Difference]: With dead ends: 201 [2023-12-02 16:17:29,739 INFO L226 Difference]: Without dead ends: 197 [2023-12-02 16:17:29,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 51 SyntacticMatches, 10 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=150, Invalid=356, Unknown=0, NotChecked=0, Total=506 [2023-12-02 16:17:29,741 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 196 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-02 16:17:29,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 232 Invalid, 411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 404 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-02 16:17:29,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2023-12-02 16:17:29,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2023-12-02 16:17:29,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 150 states have (on average 1.6266666666666667) internal successors, (244), 183 states have internal predecessors, (244), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-12-02 16:17:29,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 264 transitions. [2023-12-02 16:17:29,759 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 264 transitions. Word has length 31 [2023-12-02 16:17:29,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:17:29,759 INFO L495 AbstractCegarLoop]: Abstraction has 197 states and 264 transitions. [2023-12-02 16:17:29,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 states have internal predecessors, (21), 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) [2023-12-02 16:17:29,760 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 264 transitions. [2023-12-02 16:17:29,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-12-02 16:17:29,761 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:17:29,761 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:17:29,766 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-02 16:17:29,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:17:29,962 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-12-02 16:17:29,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:17:29,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1177720778, now seen corresponding path program 1 times [2023-12-02 16:17:29,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:17:29,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449077180] [2023-12-02 16:17:29,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:17:29,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:17:29,971 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 16:17:29,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2124154129] [2023-12-02 16:17:29,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:17:29,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:17:29,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:17:29,972 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:17:29,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-02 16:17:30,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:17:30,018 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 16:17:30,019 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:17:30,086 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 16:17:30,086 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:17:30,087 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:17:30,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449077180] [2023-12-02 16:17:30,087 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 16:17:30,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2124154129] [2023-12-02 16:17:30,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2124154129] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:17:30,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:17:30,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 16:17:30,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256874416] [2023-12-02 16:17:30,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:17:30,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 16:17:30,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:17:30,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 16:17:30,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 16:17:30,089 INFO L87 Difference]: Start difference. First operand 197 states and 264 transitions. Second operand has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 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) [2023-12-02 16:17:30,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:17:30,587 INFO L93 Difference]: Finished difference Result 304 states and 392 transitions. [2023-12-02 16:17:30,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 16:17:30,587 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 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 31 [2023-12-02 16:17:30,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:17:30,589 INFO L225 Difference]: With dead ends: 304 [2023-12-02 16:17:30,589 INFO L226 Difference]: Without dead ends: 301 [2023-12-02 16:17:30,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 16:17:30,591 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 214 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 16:17:30,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 72 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 16:17:30,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2023-12-02 16:17:30,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 265. [2023-12-02 16:17:30,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 216 states have (on average 1.6435185185185186) internal successors, (355), 249 states have internal predecessors, (355), 12 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-02 16:17:30,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 379 transitions. [2023-12-02 16:17:30,608 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 379 transitions. Word has length 31 [2023-12-02 16:17:30,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:17:30,608 INFO L495 AbstractCegarLoop]: Abstraction has 265 states and 379 transitions. [2023-12-02 16:17:30,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 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) [2023-12-02 16:17:30,609 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 379 transitions. [2023-12-02 16:17:30,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-12-02 16:17:30,610 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:17:30,610 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:17:30,616 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-02 16:17:30,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:17:30,811 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-12-02 16:17:30,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:17:30,811 INFO L85 PathProgramCache]: Analyzing trace with hash 2145361644, now seen corresponding path program 1 times [2023-12-02 16:17:30,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:17:30,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356095247] [2023-12-02 16:17:30,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:17:30,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:17:30,823 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 16:17:30,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1778726240] [2023-12-02 16:17:30,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:17:30,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:17:30,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:17:30,825 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:17:30,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-02 16:17:30,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:17:30,869 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 16:17:30,870 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:17:30,906 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 16:17:30,907 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:17:30,907 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:17:30,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356095247] [2023-12-02 16:17:30,907 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 16:17:30,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1778726240] [2023-12-02 16:17:30,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1778726240] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:17:30,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:17:30,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 16:17:30,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120866317] [2023-12-02 16:17:30,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:17:30,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 16:17:30,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:17:30,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 16:17:30,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 16:17:30,909 INFO L87 Difference]: Start difference. First operand 265 states and 379 transitions. Second operand has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 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) [2023-12-02 16:17:31,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:17:31,641 INFO L93 Difference]: Finished difference Result 364 states and 493 transitions. [2023-12-02 16:17:31,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 16:17:31,642 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 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 32 [2023-12-02 16:17:31,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:17:31,645 INFO L225 Difference]: With dead ends: 364 [2023-12-02 16:17:31,645 INFO L226 Difference]: Without dead ends: 363 [2023-12-02 16:17:31,645 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 16:17:31,646 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 62 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-02 16:17:31,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 189 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-02 16:17:31,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2023-12-02 16:17:31,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 296. [2023-12-02 16:17:31,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 246 states have (on average 1.6341463414634145) internal successors, (402), 279 states have internal predecessors, (402), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-02 16:17:31,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 428 transitions. [2023-12-02 16:17:31,668 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 428 transitions. Word has length 32 [2023-12-02 16:17:31,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:17:31,669 INFO L495 AbstractCegarLoop]: Abstraction has 296 states and 428 transitions. [2023-12-02 16:17:31,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 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) [2023-12-02 16:17:31,669 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 428 transitions. [2023-12-02 16:17:31,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-12-02 16:17:31,670 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:17:31,670 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:17:31,675 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-02 16:17:31,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:17:31,876 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-12-02 16:17:31,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:17:31,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1815195802, now seen corresponding path program 1 times [2023-12-02 16:17:31,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:17:31,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425808274] [2023-12-02 16:17:31,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:17:31,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:17:31,886 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 16:17:31,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [381027862] [2023-12-02 16:17:31,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:17:31,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:17:31,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:17:31,888 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:17:31,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-02 16:17:31,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:17:31,931 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 16:17:31,932 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:17:32,031 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 16:17:32,031 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:17:32,031 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:17:32,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425808274] [2023-12-02 16:17:32,031 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 16:17:32,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [381027862] [2023-12-02 16:17:32,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [381027862] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:17:32,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:17:32,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 16:17:32,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573601093] [2023-12-02 16:17:32,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:17:32,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 16:17:32,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:17:32,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 16:17:32,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-02 16:17:32,033 INFO L87 Difference]: Start difference. First operand 296 states and 428 transitions. Second operand has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 7 states have internal predecessors, (23), 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) [2023-12-02 16:17:33,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:17:33,631 INFO L93 Difference]: Finished difference Result 497 states and 697 transitions. [2023-12-02 16:17:33,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 16:17:33,631 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 7 states have internal predecessors, (23), 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 33 [2023-12-02 16:17:33,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:17:33,634 INFO L225 Difference]: With dead ends: 497 [2023-12-02 16:17:33,635 INFO L226 Difference]: Without dead ends: 490 [2023-12-02 16:17:33,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2023-12-02 16:17:33,636 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 348 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-02 16:17:33,636 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [350 Valid, 70 Invalid, 338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-02 16:17:33,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2023-12-02 16:17:33,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 425. [2023-12-02 16:17:33,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 425 states, 370 states have (on average 1.6189189189189188) internal successors, (599), 403 states have internal predecessors, (599), 18 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-02 16:17:33,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 635 transitions. [2023-12-02 16:17:33,666 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 635 transitions. Word has length 33 [2023-12-02 16:17:33,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:17:33,667 INFO L495 AbstractCegarLoop]: Abstraction has 425 states and 635 transitions. [2023-12-02 16:17:33,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 7 states have internal predecessors, (23), 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) [2023-12-02 16:17:33,667 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 635 transitions. [2023-12-02 16:17:33,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-12-02 16:17:33,667 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:17:33,668 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:17:33,672 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-02 16:17:33,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-02 16:17:33,868 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-12-02 16:17:33,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:17:33,869 INFO L85 PathProgramCache]: Analyzing trace with hash 2081701624, now seen corresponding path program 1 times [2023-12-02 16:17:33,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:17:33,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369518470] [2023-12-02 16:17:33,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:17:33,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:17:33,879 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 16:17:33,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1388473775] [2023-12-02 16:17:33,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:17:33,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:17:33,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:17:33,880 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:17:33,881 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-02 16:17:33,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:17:33,921 INFO L262 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 16:17:33,922 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:17:33,956 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 16:17:33,957 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:17:33,957 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:17:33,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369518470] [2023-12-02 16:17:33,957 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 16:17:33,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1388473775] [2023-12-02 16:17:33,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1388473775] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:17:33,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:17:33,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 16:17:33,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527321371] [2023-12-02 16:17:33,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:17:33,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 16:17:33,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:17:33,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 16:17:33,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 16:17:33,959 INFO L87 Difference]: Start difference. First operand 425 states and 635 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, (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) [2023-12-02 16:17:34,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:17:34,388 INFO L93 Difference]: Finished difference Result 477 states and 677 transitions. [2023-12-02 16:17:34,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 16:17:34,388 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, (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 33 [2023-12-02 16:17:34,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:17:34,392 INFO L225 Difference]: With dead ends: 477 [2023-12-02 16:17:34,392 INFO L226 Difference]: Without dead ends: 476 [2023-12-02 16:17:34,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 16:17:34,393 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 54 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 16:17:34,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 192 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 16:17:34,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2023-12-02 16:17:34,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 427. [2023-12-02 16:17:34,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 372 states have (on average 1.6155913978494623) internal successors, (601), 405 states have internal predecessors, (601), 18 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-02 16:17:34,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 637 transitions. [2023-12-02 16:17:34,426 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 637 transitions. Word has length 33 [2023-12-02 16:17:34,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:17:34,426 INFO L495 AbstractCegarLoop]: Abstraction has 427 states and 637 transitions. [2023-12-02 16:17:34,426 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, (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) [2023-12-02 16:17:34,426 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 637 transitions. [2023-12-02 16:17:34,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-02 16:17:34,427 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:17:34,427 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:17:34,432 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-12-02 16:17:34,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-12-02 16:17:34,628 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-12-02 16:17:34,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:17:34,628 INFO L85 PathProgramCache]: Analyzing trace with hash -436494883, now seen corresponding path program 1 times [2023-12-02 16:17:34,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:17:34,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633096039] [2023-12-02 16:17:34,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:17:34,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:17:34,638 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 16:17:34,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [151194679] [2023-12-02 16:17:34,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:17:34,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:17:34,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:17:34,640 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:17:34,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-02 16:17:34,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:17:34,679 INFO L262 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 16:17:34,680 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:17:34,773 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 16:17:34,773 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:17:34,774 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:17:34,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633096039] [2023-12-02 16:17:34,774 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 16:17:34,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [151194679] [2023-12-02 16:17:34,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [151194679] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:17:34,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:17:34,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 16:17:34,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519659181] [2023-12-02 16:17:34,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:17:34,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 16:17:34,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:17:34,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 16:17:34,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-02 16:17:34,776 INFO L87 Difference]: Start difference. First operand 427 states and 637 transitions. Second operand has 7 states, 6 states have (on average 4.0) internal successors, (24), 7 states have internal predecessors, (24), 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) [2023-12-02 16:17:35,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:17:35,313 INFO L93 Difference]: Finished difference Result 456 states and 673 transitions. [2023-12-02 16:17:35,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 16:17:35,313 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.0) internal successors, (24), 7 states have internal predecessors, (24), 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 34 [2023-12-02 16:17:35,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:17:35,316 INFO L225 Difference]: With dead ends: 456 [2023-12-02 16:17:35,316 INFO L226 Difference]: Without dead ends: 451 [2023-12-02 16:17:35,316 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2023-12-02 16:17:35,317 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 302 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 16:17:35,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [302 Valid, 48 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 16:17:35,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2023-12-02 16:17:35,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 422. [2023-12-02 16:17:35,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 422 states, 372 states have (on average 1.543010752688172) internal successors, (574), 400 states have internal predecessors, (574), 18 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-02 16:17:35,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 610 transitions. [2023-12-02 16:17:35,341 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 610 transitions. Word has length 34 [2023-12-02 16:17:35,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:17:35,341 INFO L495 AbstractCegarLoop]: Abstraction has 422 states and 610 transitions. [2023-12-02 16:17:35,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.0) internal successors, (24), 7 states have internal predecessors, (24), 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) [2023-12-02 16:17:35,342 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 610 transitions. [2023-12-02 16:17:35,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-02 16:17:35,342 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:17:35,342 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:17:35,347 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-02 16:17:35,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-02 16:17:35,544 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-12-02 16:17:35,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:17:35,545 INFO L85 PathProgramCache]: Analyzing trace with hash -1600957952, now seen corresponding path program 1 times [2023-12-02 16:17:35,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:17:35,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255802982] [2023-12-02 16:17:35,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:17:35,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:17:35,575 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 16:17:35,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1836212530] [2023-12-02 16:17:35,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:17:35,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:17:35,577 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:17:35,580 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:17:35,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-02 16:17:35,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:17:35,729 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-02 16:17:35,732 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:17:35,974 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 16:17:35,974 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:17:41,475 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:17:41,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255802982] [2023-12-02 16:17:41,476 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 16:17:41,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1836212530] [2023-12-02 16:17:41,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1836212530] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:17:41,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1961445813] [2023-12-02 16:17:41,478 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2023-12-02 16:17:41,478 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 16:17:41,478 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 16:17:41,478 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 16:17:41,478 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 16:17:44,513 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 81 for LOIs [2023-12-02 16:17:44,539 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 16:17:44,540 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 16:18:04,958 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '7734#(and (<= (+ 9223372036854775809 (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|)) 0) (<= 1 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= (div (* (- 1) |ULTIMATE.start_main_~p~0#1|) 4) 2305843009213693952) (exists ((|v_ULTIMATE.start_main_~b~0#1_89| Int)) (and (= |ULTIMATE.start_main_~b~0#1| (div |v_ULTIMATE.start_main_~b~0#1_89| 2)) (<= 0 (+ 9223372036854775808 (div |v_ULTIMATE.start_main_~b~0#1_89| 2))) (<= (div |v_ULTIMATE.start_main_~b~0#1_89| 2) 9223372036854775807) (= (mod |v_ULTIMATE.start_main_~b~0#1_89| 2) 0))) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 10) (= (mod (* 3 |ULTIMATE.start_main_~p~0#1|) 4) 0) (<= |ULTIMATE.start_main_~x~0#1| 10) (= |ULTIMATE.start_main_~q~0#1| 0) (exists ((|v_ULTIMATE.start_main_~a~0#1_87| Int)) (and (= |ULTIMATE.start_main_~a~0#1| (div |v_ULTIMATE.start_main_~a~0#1_87| 2)) (<= (div |v_ULTIMATE.start_main_~a~0#1_87| 2) 9223372036854775807) (<= 0 (+ 9223372036854775808 (div |v_ULTIMATE.start_main_~a~0#1_87| 2))) (= 0 (mod |v_ULTIMATE.start_main_~a~0#1_87| 2)))) (<= 0 (+ (div (* (- 1) |ULTIMATE.start_main_~p~0#1|) 4) 2305843009213693951)))' at error location [2023-12-02 16:18:04,958 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 16:18:04,958 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 16:18:04,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2023-12-02 16:18:04,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576346907] [2023-12-02 16:18:04,958 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 16:18:04,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-02 16:18:04,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:18:04,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-02 16:18:04,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=1191, Unknown=5, NotChecked=0, Total=1406 [2023-12-02 16:18:04,960 INFO L87 Difference]: Start difference. First operand 422 states and 610 transitions. Second operand has 10 states, 8 states have (on average 3.125) internal successors, (25), 9 states have internal predecessors, (25), 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) [2023-12-02 16:18:05,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:18:05,662 INFO L93 Difference]: Finished difference Result 574 states and 815 transitions. [2023-12-02 16:18:05,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-02 16:18:05,662 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 3.125) internal successors, (25), 9 states have internal predecessors, (25), 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 34 [2023-12-02 16:18:05,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:18:05,667 INFO L225 Difference]: With dead ends: 574 [2023-12-02 16:18:05,667 INFO L226 Difference]: Without dead ends: 563 [2023-12-02 16:18:05,668 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 611 ImplicationChecksByTransitivity, 22.8s TimeCoverageRelationStatistics Valid=265, Invalid=1452, Unknown=5, NotChecked=0, Total=1722 [2023-12-02 16:18:05,669 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 214 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 435 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-02 16:18:05,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 121 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 435 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-02 16:18:05,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2023-12-02 16:18:05,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 486. [2023-12-02 16:18:05,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 486 states, 432 states have (on average 1.5416666666666667) internal successors, (666), 460 states have internal predecessors, (666), 22 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-12-02 16:18:05,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 710 transitions. [2023-12-02 16:18:05,697 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 710 transitions. Word has length 34 [2023-12-02 16:18:05,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:18:05,698 INFO L495 AbstractCegarLoop]: Abstraction has 486 states and 710 transitions. [2023-12-02 16:18:05,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 3.125) internal successors, (25), 9 states have internal predecessors, (25), 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) [2023-12-02 16:18:05,698 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 710 transitions. [2023-12-02 16:18:05,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-02 16:18:05,699 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:18:05,699 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:18:05,703 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-12-02 16:18:05,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-02 16:18:05,899 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-12-02 16:18:05,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:18:05,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1909911090, now seen corresponding path program 1 times [2023-12-02 16:18:05,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:18:05,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363292850] [2023-12-02 16:18:05,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:18:05,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:18:05,910 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 16:18:05,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [491788821] [2023-12-02 16:18:05,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:18:05,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:18:05,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:18:05,912 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:18:05,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-02 16:18:05,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:18:05,962 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-02 16:18:05,963 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:18:06,200 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 16:18:06,200 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:18:09,004 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:18:09,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363292850] [2023-12-02 16:18:09,004 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 16:18:09,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [491788821] [2023-12-02 16:18:09,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [491788821] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:18:09,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2038062664] [2023-12-02 16:18:09,007 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2023-12-02 16:18:09,007 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 16:18:09,007 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 16:18:09,007 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 16:18:09,007 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 16:18:11,401 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 81 for LOIs [2023-12-02 16:18:11,430 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 16:18:11,431 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 16:18:24,448 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '9067#(and (<= 1 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 10) (<= 9223372036854775808 (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|)) (<= |ULTIMATE.start_main_~x~0#1| 10) (= |ULTIMATE.start_main_~q~0#1| 0))' at error location [2023-12-02 16:18:24,449 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 16:18:24,449 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 16:18:24,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2023-12-02 16:18:24,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930481278] [2023-12-02 16:18:24,449 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 16:18:24,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-02 16:18:24,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:18:24,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-02 16:18:24,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=1130, Unknown=4, NotChecked=0, Total=1332 [2023-12-02 16:18:24,451 INFO L87 Difference]: Start difference. First operand 486 states and 710 transitions. Second operand has 10 states, 8 states have (on average 3.25) internal successors, (26), 9 states have internal predecessors, (26), 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) [2023-12-02 16:18:25,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:18:25,386 INFO L93 Difference]: Finished difference Result 623 states and 907 transitions. [2023-12-02 16:18:25,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-02 16:18:25,387 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 3.25) internal successors, (26), 9 states have internal predecessors, (26), 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 35 [2023-12-02 16:18:25,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:18:25,390 INFO L225 Difference]: With dead ends: 623 [2023-12-02 16:18:25,390 INFO L226 Difference]: Without dead ends: 603 [2023-12-02 16:18:25,391 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 43 SyntacticMatches, 3 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 617 ImplicationChecksByTransitivity, 14.4s TimeCoverageRelationStatistics Valid=292, Invalid=1596, Unknown=4, NotChecked=0, Total=1892 [2023-12-02 16:18:25,391 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 306 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 504 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-02 16:18:25,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [306 Valid, 67 Invalid, 536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 504 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-02 16:18:25,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2023-12-02 16:18:25,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 472. [2023-12-02 16:18:25,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 472 states, 424 states have (on average 1.4858490566037736) internal successors, (630), 447 states have internal predecessors, (630), 21 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2023-12-02 16:18:25,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 672 transitions. [2023-12-02 16:18:25,422 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 672 transitions. Word has length 35 [2023-12-02 16:18:25,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:18:25,423 INFO L495 AbstractCegarLoop]: Abstraction has 472 states and 672 transitions. [2023-12-02 16:18:25,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 3.25) internal successors, (26), 9 states have internal predecessors, (26), 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) [2023-12-02 16:18:25,423 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 672 transitions. [2023-12-02 16:18:25,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-12-02 16:18:25,424 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:18:25,424 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:18:25,429 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-12-02 16:18:25,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-02 16:18:25,626 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-12-02 16:18:25,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:18:25,627 INFO L85 PathProgramCache]: Analyzing trace with hash -922298302, now seen corresponding path program 1 times [2023-12-02 16:18:25,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:18:25,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936145802] [2023-12-02 16:18:25,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:18:25,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:18:25,635 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 16:18:25,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1168469611] [2023-12-02 16:18:25,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:18:25,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:18:25,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:18:25,637 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:18:25,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-02 16:18:25,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:18:25,687 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-02 16:18:25,689 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:18:26,050 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 16:18:26,050 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:18:57,163 WARN L293 SmtUtils]: Spent 16.55s on a formula simplification that was a NOOP. DAG size: 63 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 16:19:20,930 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:19:20,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936145802] [2023-12-02 16:19:20,931 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 16:19:20,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1168469611] [2023-12-02 16:19:20,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1168469611] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:19:20,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [387007078] [2023-12-02 16:19:20,934 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2023-12-02 16:19:20,934 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 16:19:20,934 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 16:19:20,934 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 16:19:20,934 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 16:19:23,746 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 81 for LOIs [2023-12-02 16:19:23,796 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 16:19:23,797 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 16:20:04,086 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '10459#(and (<= 1 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= (div (* (- 1) |ULTIMATE.start_main_~p~0#1|) 4) 2305843009213693952) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 10) (<= (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|) 9223372036854775807) (= (mod (* 3 |ULTIMATE.start_main_~p~0#1|) 4) 0) (<= |ULTIMATE.start_main_~x~0#1| 10) (= |ULTIMATE.start_main_~q~0#1| 0) (exists ((|v_ULTIMATE.start_main_~a~0#1_99| Int)) (and (= (div |v_ULTIMATE.start_main_~a~0#1_99| 2) |ULTIMATE.start_main_~a~0#1|) (<= (div |v_ULTIMATE.start_main_~a~0#1_99| 2) 9223372036854775807) (= (mod |v_ULTIMATE.start_main_~a~0#1_99| 2) 0))) (<= (+ 9223372036854775809 (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~p~0#1|)) 0) (exists ((|v_ULTIMATE.start_main_~b~0#1_101| Int)) (and (<= (div |v_ULTIMATE.start_main_~b~0#1_101| 2) 9223372036854775807) (= (div |v_ULTIMATE.start_main_~b~0#1_101| 2) |ULTIMATE.start_main_~b~0#1|) (= (mod |v_ULTIMATE.start_main_~b~0#1_101| 2) 0))) (<= 0 (+ (div (* (- 1) |ULTIMATE.start_main_~p~0#1|) 4) 2305843009213693951)) (<= 0 (+ 9223372036854775808 (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|))))' at error location [2023-12-02 16:20:04,087 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 16:20:04,087 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 16:20:04,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2023-12-02 16:20:04,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832413831] [2023-12-02 16:20:04,087 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 16:20:04,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-02 16:20:04,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:20:04,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-02 16:20:04,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=1324, Unknown=5, NotChecked=0, Total=1560 [2023-12-02 16:20:04,089 INFO L87 Difference]: Start difference. First operand 472 states and 672 transitions. Second operand has 11 states, 9 states have (on average 3.0) internal successors, (27), 10 states have internal predecessors, (27), 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) [2023-12-02 16:20:04,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:20:04,670 INFO L93 Difference]: Finished difference Result 505 states and 690 transitions. [2023-12-02 16:20:04,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-02 16:20:04,670 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 3.0) internal successors, (27), 10 states have internal predecessors, (27), 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 36 [2023-12-02 16:20:04,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:20:04,673 INFO L225 Difference]: With dead ends: 505 [2023-12-02 16:20:04,673 INFO L226 Difference]: Without dead ends: 501 [2023-12-02 16:20:04,674 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 44 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 814 ImplicationChecksByTransitivity, 68.0s TimeCoverageRelationStatistics Valid=347, Invalid=1810, Unknown=5, NotChecked=0, Total=2162 [2023-12-02 16:20:04,674 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 329 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 555 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 16:20:04,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [331 Valid, 105 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 555 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 16:20:04,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501 states. [2023-12-02 16:20:04,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501 to 453. [2023-12-02 16:20:04,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 453 states, 406 states have (on average 1.4556650246305418) internal successors, (591), 429 states have internal predecessors, (591), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-02 16:20:04,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 631 transitions. [2023-12-02 16:20:04,700 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 631 transitions. Word has length 36 [2023-12-02 16:20:04,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:20:04,700 INFO L495 AbstractCegarLoop]: Abstraction has 453 states and 631 transitions. [2023-12-02 16:20:04,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 3.0) internal successors, (27), 10 states have internal predecessors, (27), 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) [2023-12-02 16:20:04,701 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 631 transitions. [2023-12-02 16:20:04,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-02 16:20:04,701 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:20:04,701 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:20:04,705 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-12-02 16:20:04,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-02 16:20:04,902 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-12-02 16:20:04,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:20:04,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1542044970, now seen corresponding path program 1 times [2023-12-02 16:20:04,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:20:04,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213713513] [2023-12-02 16:20:04,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:20:04,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:20:04,909 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 16:20:04,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [148566287] [2023-12-02 16:20:04,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:20:04,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:20:04,910 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:20:04,911 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:20:04,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-02 16:20:04,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:20:04,955 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-02 16:20:04,956 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:20:05,161 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 16:20:05,162 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:20:05,308 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 16:20:05,308 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:20:05,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213713513] [2023-12-02 16:20:05,308 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 16:20:05,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [148566287] [2023-12-02 16:20:05,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [148566287] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:20:05,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [421385383] [2023-12-02 16:20:05,311 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2023-12-02 16:20:05,311 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 16:20:05,311 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 16:20:05,311 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 16:20:05,312 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 16:20:05,769 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 49 for LOIs [2023-12-02 16:20:05,778 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 16:20:05,779 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 16:20:08,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [421385383] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:20:08,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 16:20:08,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [7, 7] total 28 [2023-12-02 16:20:08,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966740528] [2023-12-02 16:20:08,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:20:08,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-02 16:20:08,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:20:08,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-02 16:20:08,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=598, Unknown=0, NotChecked=0, Total=812 [2023-12-02 16:20:08,423 INFO L87 Difference]: Start difference. First operand 453 states and 631 transitions. Second operand has 18 states, 12 states have (on average 2.25) internal successors, (27), 12 states have internal predecessors, (27), 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) [2023-12-02 16:20:09,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:20:09,157 INFO L93 Difference]: Finished difference Result 457 states and 631 transitions. [2023-12-02 16:20:09,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-02 16:20:09,158 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 12 states have (on average 2.25) internal successors, (27), 12 states have internal predecessors, (27), 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) Word has length 37 [2023-12-02 16:20:09,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:20:09,161 INFO L225 Difference]: With dead ends: 457 [2023-12-02 16:20:09,162 INFO L226 Difference]: Without dead ends: 453 [2023-12-02 16:20:09,162 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 69 SyntacticMatches, 13 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 438 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=214, Invalid=598, Unknown=0, NotChecked=0, Total=812 [2023-12-02 16:20:09,163 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 100 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 526 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-02 16:20:09,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 165 Invalid, 531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 526 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-02 16:20:09,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2023-12-02 16:20:09,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 453. [2023-12-02 16:20:09,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 453 states, 406 states have (on average 1.4458128078817734) internal successors, (587), 429 states have internal predecessors, (587), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-02 16:20:09,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 627 transitions. [2023-12-02 16:20:09,199 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 627 transitions. Word has length 37 [2023-12-02 16:20:09,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:20:09,199 INFO L495 AbstractCegarLoop]: Abstraction has 453 states and 627 transitions. [2023-12-02 16:20:09,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 12 states have (on average 2.25) internal successors, (27), 12 states have internal predecessors, (27), 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) [2023-12-02 16:20:09,199 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 627 transitions. [2023-12-02 16:20:09,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-02 16:20:09,200 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:20:09,200 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:20:09,204 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-02 16:20:09,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-12-02 16:20:09,400 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-12-02 16:20:09,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:20:09,401 INFO L85 PathProgramCache]: Analyzing trace with hash 1473523764, now seen corresponding path program 1 times [2023-12-02 16:20:09,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:20:09,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430468697] [2023-12-02 16:20:09,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:20:09,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:20:09,409 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 16:20:09,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1231965285] [2023-12-02 16:20:09,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:20:09,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:20:09,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:20:09,410 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:20:09,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-02 16:20:09,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:20:09,457 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-02 16:20:09,459 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:20:09,756 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 16:20:09,756 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:20:16,874 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:20:16,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430468697] [2023-12-02 16:20:16,875 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 16:20:16,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1231965285] [2023-12-02 16:20:16,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1231965285] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:20:16,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1718980384] [2023-12-02 16:20:16,877 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2023-12-02 16:20:16,877 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 16:20:16,878 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 16:20:16,878 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 16:20:16,878 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 16:20:19,314 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 81 for LOIs [2023-12-02 16:20:19,340 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 16:20:19,341 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 16:20:32,881 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '12933#(and (exists ((|v_ULTIMATE.start_main_~b~0#1_111| Int)) (and (= (mod |v_ULTIMATE.start_main_~b~0#1_111| 2) 0) (= |ULTIMATE.start_main_~b~0#1| (div |v_ULTIMATE.start_main_~b~0#1_111| 2)) (<= (div |v_ULTIMATE.start_main_~b~0#1_111| 2) 9223372036854775807))) (<= 1 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 10) (<= (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|) 9223372036854775807) (= (mod |ULTIMATE.start_main_~p~0#1| 4) 0) (<= |ULTIMATE.start_main_~x~0#1| 10) (<= 9223372036854775808 (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~p~0#1|)) (= |ULTIMATE.start_main_~q~0#1| 0) (<= 0 (+ (div |ULTIMATE.start_main_~p~0#1| 4) 2305843009213693952)) (exists ((|v_ULTIMATE.start_main_~a~0#1_109| Int)) (and (<= (div |v_ULTIMATE.start_main_~a~0#1_109| 2) 9223372036854775807) (= (div |v_ULTIMATE.start_main_~a~0#1_109| 2) |ULTIMATE.start_main_~a~0#1|) (= (mod |v_ULTIMATE.start_main_~a~0#1_109| 2) 0))) (<= (div |ULTIMATE.start_main_~p~0#1| 4) 2305843009213693951) (<= 0 (+ 9223372036854775808 (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|))))' at error location [2023-12-02 16:20:32,881 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 16:20:32,881 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 16:20:32,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2023-12-02 16:20:32,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35432652] [2023-12-02 16:20:32,882 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 16:20:32,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-02 16:20:32,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:20:32,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-02 16:20:32,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=221, Invalid=1257, Unknown=4, NotChecked=0, Total=1482 [2023-12-02 16:20:32,883 INFO L87 Difference]: Start difference. First operand 453 states and 627 transitions. Second operand has 11 states, 9 states have (on average 3.111111111111111) internal successors, (28), 10 states have internal predecessors, (28), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-02 16:20:33,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:20:33,806 INFO L93 Difference]: Finished difference Result 640 states and 862 transitions. [2023-12-02 16:20:33,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-02 16:20:33,806 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 3.111111111111111) internal successors, (28), 10 states have internal predecessors, (28), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 37 [2023-12-02 16:20:33,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:20:33,809 INFO L225 Difference]: With dead ends: 640 [2023-12-02 16:20:33,809 INFO L226 Difference]: Without dead ends: 636 [2023-12-02 16:20:33,810 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 47 SyntacticMatches, 3 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 733 ImplicationChecksByTransitivity, 17.8s TimeCoverageRelationStatistics Valid=312, Invalid=1754, Unknown=4, NotChecked=0, Total=2070 [2023-12-02 16:20:33,811 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 271 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 722 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 722 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-02 16:20:33,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [273 Valid, 119 Invalid, 745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 722 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-02 16:20:33,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 636 states. [2023-12-02 16:20:33,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 636 to 554. [2023-12-02 16:20:33,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 554 states, 501 states have (on average 1.4251497005988023) internal successors, (714), 524 states have internal predecessors, (714), 26 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-02 16:20:33,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 766 transitions. [2023-12-02 16:20:33,842 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 766 transitions. Word has length 37 [2023-12-02 16:20:33,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:20:33,843 INFO L495 AbstractCegarLoop]: Abstraction has 554 states and 766 transitions. [2023-12-02 16:20:33,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 3.111111111111111) internal successors, (28), 10 states have internal predecessors, (28), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-02 16:20:33,843 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 766 transitions. [2023-12-02 16:20:33,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-02 16:20:33,843 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:20:33,843 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:20:33,848 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-12-02 16:20:34,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:20:34,044 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-12-02 16:20:34,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:20:34,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1565403516, now seen corresponding path program 1 times [2023-12-02 16:20:34,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:20:34,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108173322] [2023-12-02 16:20:34,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:20:34,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:20:34,051 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 16:20:34,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [43436637] [2023-12-02 16:20:34,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:20:34,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:20:34,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:20:34,053 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:20:34,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-02 16:20:34,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:20:34,094 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 16:20:34,095 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:20:34,133 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-02 16:20:34,133 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:20:34,134 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:20:34,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108173322] [2023-12-02 16:20:34,134 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 16:20:34,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [43436637] [2023-12-02 16:20:34,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [43436637] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:20:34,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:20:34,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 16:20:34,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695450104] [2023-12-02 16:20:34,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:20:34,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 16:20:34,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:20:34,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 16:20:34,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 16:20:34,136 INFO L87 Difference]: Start difference. First operand 554 states and 766 transitions. Second operand has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 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) [2023-12-02 16:20:34,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:20:34,541 INFO L93 Difference]: Finished difference Result 592 states and 803 transitions. [2023-12-02 16:20:34,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 16:20:34,542 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 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 38 [2023-12-02 16:20:34,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:20:34,544 INFO L225 Difference]: With dead ends: 592 [2023-12-02 16:20:34,544 INFO L226 Difference]: Without dead ends: 591 [2023-12-02 16:20:34,544 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 [2023-12-02 16:20:34,545 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 57 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 16:20:34,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 120 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 16:20:34,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2023-12-02 16:20:34,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 554. [2023-12-02 16:20:34,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 554 states, 501 states have (on average 1.4211576846307385) internal successors, (712), 524 states have internal predecessors, (712), 26 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-02 16:20:34,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 764 transitions. [2023-12-02 16:20:34,578 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 764 transitions. Word has length 38 [2023-12-02 16:20:34,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:20:34,578 INFO L495 AbstractCegarLoop]: Abstraction has 554 states and 764 transitions. [2023-12-02 16:20:34,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 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) [2023-12-02 16:20:34,579 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 764 transitions. [2023-12-02 16:20:34,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-12-02 16:20:34,579 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:20:34,579 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:20:34,583 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-12-02 16:20:34,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-02 16:20:34,780 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-12-02 16:20:34,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:20:34,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1873935934, now seen corresponding path program 1 times [2023-12-02 16:20:34,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:20:34,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914036356] [2023-12-02 16:20:34,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:20:34,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:20:34,787 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 16:20:34,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [571060314] [2023-12-02 16:20:34,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:20:34,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:20:34,787 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:20:34,788 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:20:34,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-02 16:20:34,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:20:34,824 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-02 16:20:34,825 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:20:35,622 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 16:20:35,623 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:20:35,623 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:20:35,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914036356] [2023-12-02 16:20:35,623 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 16:20:35,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [571060314] [2023-12-02 16:20:35,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [571060314] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:20:35,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:20:35,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 16:20:35,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337513904] [2023-12-02 16:20:35,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:20:35,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 16:20:35,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:20:35,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 16:20:35,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-02 16:20:35,624 INFO L87 Difference]: Start difference. First operand 554 states and 764 transitions. Second operand has 7 states, 5 states have (on average 6.0) internal successors, (30), 6 states have internal predecessors, (30), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-02 16:20:37,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:20:37,245 INFO L93 Difference]: Finished difference Result 586 states and 799 transitions. [2023-12-02 16:20:37,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 16:20:37,246 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 6.0) internal successors, (30), 6 states have internal predecessors, (30), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 39 [2023-12-02 16:20:37,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:20:37,248 INFO L225 Difference]: With dead ends: 586 [2023-12-02 16:20:37,249 INFO L226 Difference]: Without dead ends: 584 [2023-12-02 16:20:37,249 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2023-12-02 16:20:37,249 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 140 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-02 16:20:37,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 156 Invalid, 381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 377 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-02 16:20:37,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2023-12-02 16:20:37,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 573. [2023-12-02 16:20:37,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 519 states have (on average 1.4142581888246628) internal successors, (734), 542 states have internal predecessors, (734), 27 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-12-02 16:20:37,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 788 transitions. [2023-12-02 16:20:37,303 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 788 transitions. Word has length 39 [2023-12-02 16:20:37,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:20:37,303 INFO L495 AbstractCegarLoop]: Abstraction has 573 states and 788 transitions. [2023-12-02 16:20:37,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 6.0) internal successors, (30), 6 states have internal predecessors, (30), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-02 16:20:37,303 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 788 transitions. [2023-12-02 16:20:37,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-12-02 16:20:37,304 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:20:37,304 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:20:37,309 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-12-02 16:20:37,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-02 16:20:37,505 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-12-02 16:20:37,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:20:37,505 INFO L85 PathProgramCache]: Analyzing trace with hash -1282868682, now seen corresponding path program 1 times [2023-12-02 16:20:37,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:20:37,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065721941] [2023-12-02 16:20:37,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:20:37,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:20:37,514 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 16:20:37,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [491085184] [2023-12-02 16:20:37,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:20:37,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:20:37,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:20:37,516 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:20:37,517 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-02 16:20:37,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:20:37,573 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 16:20:37,575 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:20:37,628 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-02 16:20:37,628 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:20:37,628 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:20:37,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065721941] [2023-12-02 16:20:37,629 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 16:20:37,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [491085184] [2023-12-02 16:20:37,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [491085184] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:20:37,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:20:37,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 16:20:37,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259447877] [2023-12-02 16:20:37,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:20:37,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 16:20:37,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:20:37,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 16:20:37,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 16:20:37,631 INFO L87 Difference]: Start difference. First operand 573 states and 788 transitions. Second operand has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 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) [2023-12-02 16:20:38,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:20:38,174 INFO L93 Difference]: Finished difference Result 610 states and 825 transitions. [2023-12-02 16:20:38,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 16:20:38,175 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 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 39 [2023-12-02 16:20:38,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:20:38,177 INFO L225 Difference]: With dead ends: 610 [2023-12-02 16:20:38,177 INFO L226 Difference]: Without dead ends: 609 [2023-12-02 16:20:38,177 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 [2023-12-02 16:20:38,178 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 53 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 16:20:38,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 126 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 16:20:38,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609 states. [2023-12-02 16:20:38,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609 to 573. [2023-12-02 16:20:38,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 519 states have (on average 1.4104046242774566) internal successors, (732), 542 states have internal predecessors, (732), 27 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-12-02 16:20:38,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 786 transitions. [2023-12-02 16:20:38,230 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 786 transitions. Word has length 39 [2023-12-02 16:20:38,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:20:38,231 INFO L495 AbstractCegarLoop]: Abstraction has 573 states and 786 transitions. [2023-12-02 16:20:38,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 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) [2023-12-02 16:20:38,231 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 786 transitions. [2023-12-02 16:20:38,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-12-02 16:20:38,232 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:20:38,232 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:20:38,238 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-12-02 16:20:38,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-02 16:20:38,432 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-12-02 16:20:38,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:20:38,433 INFO L85 PathProgramCache]: Analyzing trace with hash -973030123, now seen corresponding path program 1 times [2023-12-02 16:20:38,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:20:38,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574490767] [2023-12-02 16:20:38,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:20:38,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:20:38,441 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 16:20:38,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1993568605] [2023-12-02 16:20:38,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:20:38,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:20:38,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:20:38,442 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:20:38,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-02 16:20:38,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:20:38,488 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-02 16:20:38,489 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:20:39,536 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 16:20:39,536 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:20:43,335 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:20:43,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574490767] [2023-12-02 16:20:43,335 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 16:20:43,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1993568605] [2023-12-02 16:20:43,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1993568605] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:20:43,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1717334739] [2023-12-02 16:20:43,337 INFO L159 IcfgInterpreter]: Started Sifa with 31 locations of interest [2023-12-02 16:20:43,337 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 16:20:43,338 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 16:20:43,338 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 16:20:43,338 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 16:20:45,370 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 41 for LOIs [2023-12-02 16:20:45,378 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 16:20:45,379 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 16:20:48,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1717334739] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:20:48,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 16:20:48,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [7] total 23 [2023-12-02 16:20:48,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319949063] [2023-12-02 16:20:48,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:20:48,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-02 16:20:48,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:20:48,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-02 16:20:48,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=563, Unknown=1, NotChecked=0, Total=756 [2023-12-02 16:20:48,836 INFO L87 Difference]: Start difference. First operand 573 states and 786 transitions. Second operand has 18 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 11 states have internal predecessors, (25), 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) [2023-12-02 16:20:50,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:20:50,149 INFO L93 Difference]: Finished difference Result 595 states and 804 transitions. [2023-12-02 16:20:50,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-02 16:20:50,150 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 11 states have internal predecessors, (25), 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) Word has length 40 [2023-12-02 16:20:50,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:20:50,153 INFO L225 Difference]: With dead ends: 595 [2023-12-02 16:20:50,153 INFO L226 Difference]: Without dead ends: 589 [2023-12-02 16:20:50,154 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 57 SyntacticMatches, 13 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 456 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=233, Invalid=636, Unknown=1, NotChecked=0, Total=870 [2023-12-02 16:20:50,154 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 130 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 476 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:20:50,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 114 Invalid, 492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 476 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-02 16:20:50,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2023-12-02 16:20:50,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 573. [2023-12-02 16:20:50,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 519 states have (on average 1.4026974951830442) internal successors, (728), 542 states have internal predecessors, (728), 27 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-12-02 16:20:50,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 782 transitions. [2023-12-02 16:20:50,204 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 782 transitions. Word has length 40 [2023-12-02 16:20:50,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:20:50,204 INFO L495 AbstractCegarLoop]: Abstraction has 573 states and 782 transitions. [2023-12-02 16:20:50,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 11 states have internal predecessors, (25), 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) [2023-12-02 16:20:50,204 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 782 transitions. [2023-12-02 16:20:50,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-12-02 16:20:50,205 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:20:50,205 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:20:50,210 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-12-02 16:20:50,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:20:50,406 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-12-02 16:20:50,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:20:50,406 INFO L85 PathProgramCache]: Analyzing trace with hash -2037528132, now seen corresponding path program 1 times [2023-12-02 16:20:50,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:20:50,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344608344] [2023-12-02 16:20:50,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:20:50,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:20:50,413 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 16:20:50,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [443446051] [2023-12-02 16:20:50,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:20:50,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:20:50,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:20:50,414 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:20:50,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-02 16:20:50,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:20:50,457 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-02 16:20:50,458 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:20:51,004 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 16:20:51,004 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:20:52,149 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:20:52,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344608344] [2023-12-02 16:20:52,150 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 16:20:52,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [443446051] [2023-12-02 16:20:52,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [443446051] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:20:52,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1428700889] [2023-12-02 16:20:52,152 INFO L159 IcfgInterpreter]: Started Sifa with 30 locations of interest [2023-12-02 16:20:52,152 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 16:20:52,152 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 16:20:52,153 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 16:20:52,153 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 16:20:54,279 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 41 for LOIs [2023-12-02 16:20:54,288 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 16:20:54,289 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 16:20:57,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1428700889] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:20:57,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 16:20:57,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [9] total 24 [2023-12-02 16:20:57,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369976294] [2023-12-02 16:20:57,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:20:57,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-02 16:20:57,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:20:57,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-02 16:20:57,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=669, Unknown=0, NotChecked=0, Total=870 [2023-12-02 16:20:57,007 INFO L87 Difference]: Start difference. First operand 573 states and 782 transitions. Second operand has 17 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 10 states have internal predecessors, (24), 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) [2023-12-02 16:20:58,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:20:58,402 INFO L93 Difference]: Finished difference Result 586 states and 793 transitions. [2023-12-02 16:20:58,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-02 16:20:58,403 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 10 states have internal predecessors, (24), 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) Word has length 40 [2023-12-02 16:20:58,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:20:58,405 INFO L225 Difference]: With dead ends: 586 [2023-12-02 16:20:58,405 INFO L226 Difference]: Without dead ends: 584 [2023-12-02 16:20:58,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 69 SyntacticMatches, 15 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 555 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=242, Invalid=750, Unknown=0, NotChecked=0, Total=992 [2023-12-02 16:20:58,407 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 390 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 500 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 392 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-02 16:20:58,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [392 Valid, 132 Invalid, 518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 500 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-02 16:20:58,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2023-12-02 16:20:58,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 567. [2023-12-02 16:20:58,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 567 states, 513 states have (on average 1.4035087719298245) internal successors, (720), 536 states have internal predecessors, (720), 27 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-12-02 16:20:58,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 774 transitions. [2023-12-02 16:20:58,448 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 774 transitions. Word has length 40 [2023-12-02 16:20:58,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:20:58,448 INFO L495 AbstractCegarLoop]: Abstraction has 567 states and 774 transitions. [2023-12-02 16:20:58,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 10 states have internal predecessors, (24), 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) [2023-12-02 16:20:58,448 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 774 transitions. [2023-12-02 16:20:58,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-12-02 16:20:58,449 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:20:58,449 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:20:58,453 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-12-02 16:20:58,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:20:58,649 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-12-02 16:20:58,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:20:58,650 INFO L85 PathProgramCache]: Analyzing trace with hash -2126977275, now seen corresponding path program 1 times [2023-12-02 16:20:58,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:20:58,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759218131] [2023-12-02 16:20:58,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:20:58,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:20:58,657 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 16:20:58,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [106031063] [2023-12-02 16:20:58,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:20:58,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:20:58,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:20:58,658 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:20:58,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-12-02 16:20:58,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:20:58,704 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-02 16:20:58,705 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:20:58,881 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 16:20:58,882 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:20:59,206 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 16:20:59,207 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:20:59,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759218131] [2023-12-02 16:20:59,207 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 16:20:59,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [106031063] [2023-12-02 16:20:59,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [106031063] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:20:59,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1224616085] [2023-12-02 16:20:59,209 INFO L159 IcfgInterpreter]: Started Sifa with 37 locations of interest [2023-12-02 16:20:59,210 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 16:20:59,210 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 16:20:59,210 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 16:20:59,210 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 16:21:00,932 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 90 for LOIs [2023-12-02 16:21:00,969 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 16:21:00,971 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 16:21:05,214 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '21677#(and (<= (+ 9223372036854775809 (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|)) 0) (<= 1 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start_main_~p~0#1| 1) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|)) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~q~0#1|)) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 10) (<= |ULTIMATE.start_main_~b~0#1| 9) (<= |ULTIMATE.start_main_~x~0#1| 10) (<= |ULTIMATE.start_main_~q~0#1| 9223372036854775807) (<= |ULTIMATE.start_main_~a~0#1| 9))' at error location [2023-12-02 16:21:05,214 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 16:21:05,214 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 16:21:05,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 12 [2023-12-02 16:21:05,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724264598] [2023-12-02 16:21:05,215 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 16:21:05,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-02 16:21:05,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:21:05,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-02 16:21:05,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=229, Invalid=1177, Unknown=0, NotChecked=0, Total=1406 [2023-12-02 16:21:05,216 INFO L87 Difference]: Start difference. First operand 567 states and 774 transitions. Second operand has 13 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 5 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) [2023-12-02 16:21:05,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:21:05,946 INFO L93 Difference]: Finished difference Result 623 states and 854 transitions. [2023-12-02 16:21:05,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-02 16:21:05,946 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 5 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) Word has length 42 [2023-12-02 16:21:05,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:21:05,949 INFO L225 Difference]: With dead ends: 623 [2023-12-02 16:21:05,950 INFO L226 Difference]: Without dead ends: 605 [2023-12-02 16:21:05,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 78 SyntacticMatches, 10 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 870 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=275, Invalid=1447, Unknown=0, NotChecked=0, Total=1722 [2023-12-02 16:21:05,951 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 371 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-02 16:21:05,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [371 Valid, 68 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-02 16:21:05,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2023-12-02 16:21:05,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 371. [2023-12-02 16:21:05,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 333 states have (on average 1.3003003003003002) internal successors, (433), 350 states have internal predecessors, (433), 17 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-12-02 16:21:05,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 467 transitions. [2023-12-02 16:21:05,981 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 467 transitions. Word has length 42 [2023-12-02 16:21:05,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:21:05,981 INFO L495 AbstractCegarLoop]: Abstraction has 371 states and 467 transitions. [2023-12-02 16:21:05,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 5 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) [2023-12-02 16:21:05,981 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 467 transitions. [2023-12-02 16:21:05,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-12-02 16:21:05,981 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:21:05,982 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:21:05,986 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-12-02 16:21:06,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:21:06,182 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-12-02 16:21:06,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:21:06,182 INFO L85 PathProgramCache]: Analyzing trace with hash 379273223, now seen corresponding path program 1 times [2023-12-02 16:21:06,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:21:06,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793526248] [2023-12-02 16:21:06,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:21:06,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:21:06,190 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 16:21:06,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1363763876] [2023-12-02 16:21:06,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:21:06,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:21:06,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:21:06,192 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:21:06,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-12-02 16:21:06,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:21:06,236 INFO L262 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-02 16:21:06,237 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:21:06,492 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 16:21:06,492 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:21:12,016 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:21:12,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793526248] [2023-12-02 16:21:12,016 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 16:21:12,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1363763876] [2023-12-02 16:21:12,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1363763876] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:21:12,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [724419507] [2023-12-02 16:21:12,018 INFO L159 IcfgInterpreter]: Started Sifa with 37 locations of interest [2023-12-02 16:21:12,018 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 16:21:12,019 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 16:21:12,019 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 16:21:12,019 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 16:21:13,693 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 90 for LOIs [2023-12-02 16:21:13,725 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 16:21:13,726 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 16:21:17,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [724419507] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:21:17,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 16:21:17,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [7] total 31 [2023-12-02 16:21:17,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886190580] [2023-12-02 16:21:17,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:21:17,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-02 16:21:17,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:21:17,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-02 16:21:17,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=1080, Unknown=1, NotChecked=0, Total=1260 [2023-12-02 16:21:17,655 INFO L87 Difference]: Start difference. First operand 371 states and 467 transitions. Second operand has 26 states, 20 states have (on average 1.55) internal successors, (31), 20 states have internal predecessors, (31), 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) [2023-12-02 16:21:28,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:21:28,077 INFO L93 Difference]: Finished difference Result 506 states and 617 transitions. [2023-12-02 16:21:28,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-12-02 16:21:28,078 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 20 states have (on average 1.55) internal successors, (31), 20 states have internal predecessors, (31), 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) Word has length 44 [2023-12-02 16:21:28,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:21:28,080 INFO L225 Difference]: With dead ends: 506 [2023-12-02 16:21:28,080 INFO L226 Difference]: Without dead ends: 504 [2023-12-02 16:21:28,082 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 64 SyntacticMatches, 10 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1562 ImplicationChecksByTransitivity, 16.2s TimeCoverageRelationStatistics Valid=1077, Invalid=4178, Unknown=1, NotChecked=0, Total=5256 [2023-12-02 16:21:28,082 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 293 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 1740 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 1793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1740 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-12-02 16:21:28,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [294 Valid, 85 Invalid, 1793 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 1740 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-12-02 16:21:28,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2023-12-02 16:21:28,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 427. [2023-12-02 16:21:28,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 387 states have (on average 1.3049095607235142) internal successors, (505), 404 states have internal predecessors, (505), 19 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-02 16:21:28,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 543 transitions. [2023-12-02 16:21:28,110 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 543 transitions. Word has length 44 [2023-12-02 16:21:28,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:21:28,111 INFO L495 AbstractCegarLoop]: Abstraction has 427 states and 543 transitions. [2023-12-02 16:21:28,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 20 states have (on average 1.55) internal successors, (31), 20 states have internal predecessors, (31), 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) [2023-12-02 16:21:28,111 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 543 transitions. [2023-12-02 16:21:28,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-12-02 16:21:28,111 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:21:28,111 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:21:28,116 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-12-02 16:21:28,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:21:28,312 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-12-02 16:21:28,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:21:28,312 INFO L85 PathProgramCache]: Analyzing trace with hash -590651127, now seen corresponding path program 1 times [2023-12-02 16:21:28,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:21:28,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997105293] [2023-12-02 16:21:28,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:21:28,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:21:28,319 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 16:21:28,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [493179881] [2023-12-02 16:21:28,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:21:28,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:21:28,319 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:21:28,320 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:21:28,321 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-12-02 16:21:28,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:21:28,359 INFO L262 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-02 16:21:28,361 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:21:28,925 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 16:21:28,925 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:21:31,399 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:21:31,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997105293] [2023-12-02 16:21:31,399 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 16:21:31,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [493179881] [2023-12-02 16:21:31,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [493179881] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:21:31,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1340917294] [2023-12-02 16:21:31,400 INFO L159 IcfgInterpreter]: Started Sifa with 37 locations of interest [2023-12-02 16:21:31,400 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 16:21:31,401 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 16:21:31,401 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 16:21:31,401 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 16:21:32,798 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 90 for LOIs [2023-12-02 16:21:32,829 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 16:21:32,831 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 16:21:38,038 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '24334#(and (<= 1 |#StackHeapBarrier|) (<= 0 (+ |ULTIMATE.start_main_~a~0#1| 9223372036854775817)) (<= 0 |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start_main_~p~0#1| 1) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~q~0#1|)) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 10) (<= (+ 9223372036854775809 |ULTIMATE.start_main_~q~0#1| (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|)) 0) (<= 0 (+ |ULTIMATE.start_main_~b~0#1| 9223372036854775817)) (<= |ULTIMATE.start_main_~x~0#1| 10) (<= |ULTIMATE.start_main_~q~0#1| 9223372036854775807) (<= |ULTIMATE.start_main_~b~0#1| 10) (<= |ULTIMATE.start_main_~a~0#1| 10))' at error location [2023-12-02 16:21:38,038 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 16:21:38,038 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 16:21:38,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2023-12-02 16:21:38,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304764137] [2023-12-02 16:21:38,038 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 16:21:38,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-02 16:21:38,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:21:38,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-02 16:21:38,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=1349, Unknown=1, NotChecked=0, Total=1560 [2023-12-02 16:21:38,040 INFO L87 Difference]: Start difference. First operand 427 states and 543 transitions. Second operand has 9 states, 7 states have (on average 5.285714285714286) internal successors, (37), 8 states have internal predecessors, (37), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-02 16:21:39,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:21:39,525 INFO L93 Difference]: Finished difference Result 509 states and 646 transitions. [2023-12-02 16:21:39,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-02 16:21:39,525 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 5.285714285714286) internal successors, (37), 8 states have internal predecessors, (37), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 46 [2023-12-02 16:21:39,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:21:39,527 INFO L225 Difference]: With dead ends: 509 [2023-12-02 16:21:39,527 INFO L226 Difference]: Without dead ends: 500 [2023-12-02 16:21:39,528 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 66 SyntacticMatches, 10 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 960 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=297, Invalid=1772, Unknown=1, NotChecked=0, Total=2070 [2023-12-02 16:21:39,529 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 213 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 438 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-02 16:21:39,529 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 48 Invalid, 476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 438 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-02 16:21:39,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2023-12-02 16:21:39,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 272. [2023-12-02 16:21:39,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 247 states have (on average 1.1862348178137652) internal successors, (293), 255 states have internal predecessors, (293), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-02 16:21:39,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 319 transitions. [2023-12-02 16:21:39,552 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 319 transitions. Word has length 46 [2023-12-02 16:21:39,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:21:39,552 INFO L495 AbstractCegarLoop]: Abstraction has 272 states and 319 transitions. [2023-12-02 16:21:39,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 5.285714285714286) internal successors, (37), 8 states have internal predecessors, (37), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-02 16:21:39,552 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 319 transitions. [2023-12-02 16:21:39,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-12-02 16:21:39,553 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:21:39,553 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:21:39,557 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2023-12-02 16:21:39,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:21:39,754 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-12-02 16:21:39,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:21:39,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1130315695, now seen corresponding path program 1 times [2023-12-02 16:21:39,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:21:39,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134997396] [2023-12-02 16:21:39,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:21:39,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:21:39,760 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 16:21:39,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [631491844] [2023-12-02 16:21:39,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:21:39,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:21:39,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:21:39,761 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:21:39,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-12-02 16:21:39,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:21:39,802 INFO L262 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-02 16:21:39,803 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:21:40,244 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 16:21:40,245 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:21:40,582 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:21:40,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134997396] [2023-12-02 16:21:40,582 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 16:21:40,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [631491844] [2023-12-02 16:21:40,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [631491844] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:21:40,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1479532334] [2023-12-02 16:21:40,584 INFO L159 IcfgInterpreter]: Started Sifa with 37 locations of interest [2023-12-02 16:21:40,584 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 16:21:40,584 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 16:21:40,585 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 16:21:40,585 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 16:21:41,756 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 35 for LOIs [2023-12-02 16:21:41,766 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 16:21:41,767 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 16:21:51,496 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '25493#(and (<= 1 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start_main_~p~0#1| 1) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 10) (<= (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|) 9223372036854775807) (<= |ULTIMATE.start_main_~x~0#1| 10) (<= |ULTIMATE.start_main_~q~0#1| 9223372036854775807) (<= 9223372036854775808 (+ |ULTIMATE.start_main_~q~0#1| (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|))) (<= |ULTIMATE.start_main_~b~0#1| 10) (<= |ULTIMATE.start_main_~a~0#1| 10))' at error location [2023-12-02 16:21:51,496 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 16:21:51,496 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 16:21:51,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2023-12-02 16:21:51,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025631318] [2023-12-02 16:21:51,497 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 16:21:51,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-02 16:21:51,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:21:51,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-02 16:21:51,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=282, Invalid=1278, Unknown=0, NotChecked=0, Total=1560 [2023-12-02 16:21:51,498 INFO L87 Difference]: Start difference. First operand 272 states and 319 transitions. Second operand has 9 states, 7 states have (on average 5.428571428571429) internal successors, (38), 8 states have internal predecessors, (38), 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) [2023-12-02 16:21:52,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:21:52,331 INFO L93 Difference]: Finished difference Result 303 states and 354 transitions. [2023-12-02 16:21:52,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-02 16:21:52,331 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 5.428571428571429) internal successors, (38), 8 states have internal predecessors, (38), 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 47 [2023-12-02 16:21:52,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:21:52,333 INFO L225 Difference]: With dead ends: 303 [2023-12-02 16:21:52,333 INFO L226 Difference]: Without dead ends: 302 [2023-12-02 16:21:52,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 85 SyntacticMatches, 10 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 863 ImplicationChecksByTransitivity, 10.1s TimeCoverageRelationStatistics Valid=351, Invalid=1719, Unknown=0, NotChecked=0, Total=2070 [2023-12-02 16:21:52,335 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 225 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 471 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-02 16:21:52,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 80 Invalid, 482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 471 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-02 16:21:52,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2023-12-02 16:21:52,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 279. [2023-12-02 16:21:52,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 254 states have (on average 1.1811023622047243) internal successors, (300), 262 states have internal predecessors, (300), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-02 16:21:52,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 326 transitions. [2023-12-02 16:21:52,368 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 326 transitions. Word has length 47 [2023-12-02 16:21:52,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:21:52,369 INFO L495 AbstractCegarLoop]: Abstraction has 279 states and 326 transitions. [2023-12-02 16:21:52,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 5.428571428571429) internal successors, (38), 8 states have internal predecessors, (38), 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) [2023-12-02 16:21:52,369 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 326 transitions. [2023-12-02 16:21:52,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-02 16:21:52,370 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:21:52,370 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:21:52,375 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2023-12-02 16:21:52,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:21:52,570 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-12-02 16:21:52,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:21:52,571 INFO L85 PathProgramCache]: Analyzing trace with hash -324415917, now seen corresponding path program 1 times [2023-12-02 16:21:52,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:21:52,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816863761] [2023-12-02 16:21:52,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:21:52,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:21:52,577 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 16:21:52,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [524075914] [2023-12-02 16:21:52,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:21:52,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:21:52,577 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:21:52,578 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:21:52,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-12-02 16:21:52,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:21:52,624 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-02 16:21:52,625 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:21:53,301 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 16:21:53,301 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:21:53,301 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:21:53,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816863761] [2023-12-02 16:21:53,301 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 16:21:53,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [524075914] [2023-12-02 16:21:53,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [524075914] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:21:53,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:21:53,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-02 16:21:53,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724051397] [2023-12-02 16:21:53,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:21:53,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-02 16:21:53,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:21:53,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-02 16:21:53,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-12-02 16:21:53,303 INFO L87 Difference]: Start difference. First operand 279 states and 326 transitions. Second operand has 10 states, 8 states have (on average 4.875) internal successors, (39), 9 states have internal predecessors, (39), 3 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2023-12-02 16:21:55,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:21:55,322 INFO L93 Difference]: Finished difference Result 454 states and 525 transitions. [2023-12-02 16:21:55,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-02 16:21:55,322 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 4.875) internal successors, (39), 9 states have internal predecessors, (39), 3 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 51 [2023-12-02 16:21:55,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:21:55,324 INFO L225 Difference]: With dead ends: 454 [2023-12-02 16:21:55,324 INFO L226 Difference]: Without dead ends: 452 [2023-12-02 16:21:55,324 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=141, Invalid=279, Unknown=0, NotChecked=0, Total=420 [2023-12-02 16:21:55,325 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 247 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 744 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 744 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-02 16:21:55,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 150 Invalid, 759 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 744 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-02 16:21:55,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2023-12-02 16:21:55,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 399. [2023-12-02 16:21:55,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 369 states have (on average 1.1815718157181572) internal successors, (436), 377 states have internal predecessors, (436), 18 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-02 16:21:55,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 472 transitions. [2023-12-02 16:21:55,358 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 472 transitions. Word has length 51 [2023-12-02 16:21:55,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:21:55,358 INFO L495 AbstractCegarLoop]: Abstraction has 399 states and 472 transitions. [2023-12-02 16:21:55,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 4.875) internal successors, (39), 9 states have internal predecessors, (39), 3 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2023-12-02 16:21:55,359 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 472 transitions. [2023-12-02 16:21:55,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-02 16:21:55,359 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:21:55,359 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2023-12-02 16:21:55,364 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-12-02 16:21:55,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:21:55,560 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-12-02 16:21:55,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:21:55,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1450860223, now seen corresponding path program 1 times [2023-12-02 16:21:55,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:21:55,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746249033] [2023-12-02 16:21:55,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:21:55,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:21:55,566 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 16:21:55,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1250186421] [2023-12-02 16:21:55,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:21:55,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:21:55,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:21:55,568 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:21:55,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-12-02 16:21:55,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:21:55,608 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 16:21:55,609 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:21:55,649 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-02 16:21:55,649 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:21:55,701 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-02 16:21:55,701 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:21:55,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746249033] [2023-12-02 16:21:55,701 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 16:21:55,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1250186421] [2023-12-02 16:21:55,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1250186421] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:21:55,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [341169427] [2023-12-02 16:21:55,703 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2023-12-02 16:21:55,703 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 16:21:55,703 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 16:21:55,703 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 16:21:55,703 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 16:21:57,175 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 32 for LOIs [2023-12-02 16:21:57,181 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 16:21:57,182 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 16:22:13,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [341169427] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:22:13,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 16:22:13,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [3, 3] total 26 [2023-12-02 16:22:13,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717857894] [2023-12-02 16:22:13,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:22:13,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-02 16:22:13,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:22:13,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-02 16:22:13,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=559, Unknown=3, NotChecked=0, Total=702 [2023-12-02 16:22:13,534 INFO L87 Difference]: Start difference. First operand 399 states and 472 transitions. Second operand has 23 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 16 states have internal predecessors, (23), 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) [2023-12-02 16:22:17,498 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 16:22:19,502 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 16:22:24,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:22:24,513 INFO L93 Difference]: Finished difference Result 443 states and 517 transitions. [2023-12-02 16:22:24,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-02 16:22:24,514 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 16 states have internal predecessors, (23), 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) Word has length 52 [2023-12-02 16:22:24,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:22:24,516 INFO L225 Difference]: With dead ends: 443 [2023-12-02 16:22:24,516 INFO L226 Difference]: Without dead ends: 441 [2023-12-02 16:22:24,517 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 120 SyntacticMatches, 9 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 460 ImplicationChecksByTransitivity, 21.1s TimeCoverageRelationStatistics Valid=291, Invalid=965, Unknown=4, NotChecked=0, Total=1260 [2023-12-02 16:22:24,517 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 410 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 515 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 411 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2023-12-02 16:22:24,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [411 Valid, 119 Invalid, 531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 515 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2023-12-02 16:22:24,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2023-12-02 16:22:24,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 399. [2023-12-02 16:22:24,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 369 states have (on average 1.1761517615176151) internal successors, (434), 377 states have internal predecessors, (434), 18 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-02 16:22:24,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 470 transitions. [2023-12-02 16:22:24,552 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 470 transitions. Word has length 52 [2023-12-02 16:22:24,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:22:24,552 INFO L495 AbstractCegarLoop]: Abstraction has 399 states and 470 transitions. [2023-12-02 16:22:24,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 16 states have internal predecessors, (23), 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) [2023-12-02 16:22:24,552 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 470 transitions. [2023-12-02 16:22:24,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-12-02 16:22:24,553 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:22:24,553 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:22:24,557 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-12-02 16:22:24,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-12-02 16:22:24,754 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-12-02 16:22:24,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:22:24,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1497123886, now seen corresponding path program 1 times [2023-12-02 16:22:24,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:22:24,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450617010] [2023-12-02 16:22:24,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:22:24,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:22:24,761 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 16:22:24,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [614143358] [2023-12-02 16:22:24,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:22:24,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:22:24,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:22:24,762 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:22:24,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-12-02 16:22:24,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:22:24,806 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 16:22:24,808 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:22:24,862 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-02 16:22:24,863 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:22:24,863 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:22:24,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450617010] [2023-12-02 16:22:24,863 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 16:22:24,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [614143358] [2023-12-02 16:22:24,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [614143358] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:22:24,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:22:24,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 16:22:24,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531114812] [2023-12-02 16:22:24,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:22:24,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 16:22:24,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:22:24,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 16:22:24,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 16:22:24,864 INFO L87 Difference]: Start difference. First operand 399 states and 470 transitions. Second operand has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 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) [2023-12-02 16:22:25,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:22:25,320 INFO L93 Difference]: Finished difference Result 441 states and 515 transitions. [2023-12-02 16:22:25,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 16:22:25,320 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 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 54 [2023-12-02 16:22:25,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:22:25,323 INFO L225 Difference]: With dead ends: 441 [2023-12-02 16:22:25,323 INFO L226 Difference]: Without dead ends: 440 [2023-12-02 16:22:25,323 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 16:22:25,323 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 21 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 16:22:25,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 127 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 16:22:25,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2023-12-02 16:22:25,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 413. [2023-12-02 16:22:25,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 383 states have (on average 1.1775456919060052) internal successors, (451), 391 states have internal predecessors, (451), 18 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-02 16:22:25,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 487 transitions. [2023-12-02 16:22:25,358 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 487 transitions. Word has length 54 [2023-12-02 16:22:25,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:22:25,358 INFO L495 AbstractCegarLoop]: Abstraction has 413 states and 487 transitions. [2023-12-02 16:22:25,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 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) [2023-12-02 16:22:25,359 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 487 transitions. [2023-12-02 16:22:25,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:22:25,359 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:22:25,359 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:22:25,364 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2023-12-02 16:22:25,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-12-02 16:22:25,560 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-12-02 16:22:25,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:22:25,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1152067612, now seen corresponding path program 1 times [2023-12-02 16:22:25,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:22:25,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989617599] [2023-12-02 16:22:25,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:22:25,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:22:25,566 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 16:22:25,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1536595708] [2023-12-02 16:22:25,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:22:25,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:22:25,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:22:25,568 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:22:25,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-12-02 16:22:25,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:22:25,619 INFO L262 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-02 16:22:25,621 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:22:25,990 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-02 16:22:25,991 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:22:28,179 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:22:28,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989617599] [2023-12-02 16:22:28,179 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 16:22:28,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1536595708] [2023-12-02 16:22:28,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1536595708] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:22:28,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1140828170] [2023-12-02 16:22:28,180 INFO L159 IcfgInterpreter]: Started Sifa with 41 locations of interest [2023-12-02 16:22:28,180 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 16:22:28,181 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 16:22:28,181 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 16:22:28,181 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 16:22:29,811 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 32 for LOIs [2023-12-02 16:22:29,823 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 16:22:29,824 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 16:22:52,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1140828170] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:22:52,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 16:22:52,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [11] total 41 [2023-12-02 16:22:52,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035244920] [2023-12-02 16:22:52,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:22:52,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-02 16:22:52,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:22:52,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-02 16:22:52,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=310, Invalid=1669, Unknown=1, NotChecked=0, Total=1980 [2023-12-02 16:22:52,470 INFO L87 Difference]: Start difference. First operand 413 states and 487 transitions. Second operand has 32 states, 26 states have (on average 1.3461538461538463) internal successors, (35), 25 states have internal predecessors, (35), 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) [2023-12-02 16:23:06,298 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 16:23:10,397 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 16:23:17,028 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 16:23:18,468 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 16:23:21,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:23:21,610 INFO L93 Difference]: Finished difference Result 440 states and 513 transitions. [2023-12-02 16:23:21,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-02 16:23:21,611 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 26 states have (on average 1.3461538461538463) internal successors, (35), 25 states have internal predecessors, (35), 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) Word has length 58 [2023-12-02 16:23:21,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:23:21,612 INFO L225 Difference]: With dead ends: 440 [2023-12-02 16:23:21,613 INFO L226 Difference]: Without dead ends: 438 [2023-12-02 16:23:21,614 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 77 SyntacticMatches, 10 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1028 ImplicationChecksByTransitivity, 37.9s TimeCoverageRelationStatistics Valid=615, Invalid=2923, Unknown=2, NotChecked=0, Total=3540 [2023-12-02 16:23:21,614 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 278 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 1207 mSolverCounterSat, 17 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 1226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1207 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.0s IncrementalHoareTripleChecker+Time [2023-12-02 16:23:21,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [279 Valid, 116 Invalid, 1226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1207 Invalid, 2 Unknown, 0 Unchecked, 16.0s Time] [2023-12-02 16:23:21,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2023-12-02 16:23:21,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 425. [2023-12-02 16:23:21,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 425 states, 395 states have (on average 1.1721518987341772) internal successors, (463), 403 states have internal predecessors, (463), 18 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-02 16:23:21,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 499 transitions. [2023-12-02 16:23:21,649 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 499 transitions. Word has length 58 [2023-12-02 16:23:21,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:23:21,649 INFO L495 AbstractCegarLoop]: Abstraction has 425 states and 499 transitions. [2023-12-02 16:23:21,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 26 states have (on average 1.3461538461538463) internal successors, (35), 25 states have internal predecessors, (35), 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) [2023-12-02 16:23:21,650 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 499 transitions. [2023-12-02 16:23:21,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-02 16:23:21,650 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:23:21,650 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:23:21,655 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2023-12-02 16:23:21,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-12-02 16:23:21,851 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-12-02 16:23:21,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:23:21,851 INFO L85 PathProgramCache]: Analyzing trace with hash -906509351, now seen corresponding path program 1 times [2023-12-02 16:23:21,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:23:21,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129985385] [2023-12-02 16:23:21,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:23:21,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:23:21,858 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 16:23:21,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [482198713] [2023-12-02 16:23:21,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:23:21,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:23:21,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:23:21,859 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:23:21,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-12-02 16:23:21,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:23:21,908 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-02 16:23:21,910 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:23:22,556 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 13 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 16:23:22,556 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:23:43,941 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 26 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 16:23:43,942 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:23:43,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129985385] [2023-12-02 16:23:43,942 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 16:23:43,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [482198713] [2023-12-02 16:23:43,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [482198713] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:23:43,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [930319069] [2023-12-02 16:23:43,943 INFO L159 IcfgInterpreter]: Started Sifa with 36 locations of interest [2023-12-02 16:23:43,943 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 16:23:43,944 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 16:23:43,944 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 16:23:43,944 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 16:23:45,039 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 34 for LOIs [2023-12-02 16:23:45,045 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 16:23:45,046 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 16:24:02,384 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '31250#(and (<= 1 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 10) (<= (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|) 9223372036854775807) (<= (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~p~0#1|) 9223372036854775807) (<= 0 (+ 9223372036854775808 (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~p~0#1|))) (<= |ULTIMATE.start_main_~x~0#1| 10) (<= 9223372036854775808 (+ |ULTIMATE.start_main_~q~0#1| (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~p~0#1|))) (<= 0 (+ 9223372036854775808 (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|))))' at error location [2023-12-02 16:24:02,384 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 16:24:02,384 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 16:24:02,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 21 [2023-12-02 16:24:02,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100025023] [2023-12-02 16:24:02,384 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 16:24:02,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-02 16:24:02,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:24:02,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-02 16:24:02,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=324, Invalid=2327, Unknown=1, NotChecked=0, Total=2652 [2023-12-02 16:24:02,386 INFO L87 Difference]: Start difference. First operand 425 states and 499 transitions. Second operand has 22 states, 20 states have (on average 4.55) internal successors, (91), 20 states have internal predecessors, (91), 5 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 7 states have call predecessors, (8), 5 states have call successors, (8) [2023-12-02 16:24:13,432 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-02 16:24:16,570 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-02 16:24:19,395 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-02 16:24:21,536 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-02 16:24:37,110 WARN L293 SmtUtils]: Spent 13.02s on a formula simplification. DAG size of input: 88 DAG size of output: 83 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 16:24:43,633 WARN L293 SmtUtils]: Spent 6.26s on a formula simplification. DAG size of input: 97 DAG size of output: 73 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 16:25:18,283 WARN L293 SmtUtils]: Spent 26.58s on a formula simplification. DAG size of input: 102 DAG size of output: 98 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 16:25:34,075 WARN L293 SmtUtils]: Spent 6.31s on a formula simplification. DAG size of input: 74 DAG size of output: 69 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 16:25:36,152 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-02 16:25:43,973 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-02 16:25:45,993 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-02 16:25:47,998 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-02 16:26:00,394 WARN L293 SmtUtils]: Spent 9.87s on a formula simplification. DAG size of input: 84 DAG size of output: 74 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 16:26:02,722 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-02 16:26:04,817 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-02 16:26:07,500 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-02 16:26:10,559 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-02 16:26:14,876 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-02 16:26:20,309 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-02 16:26:22,855 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-02 16:26:33,300 WARN L293 SmtUtils]: Spent 5.40s on a formula simplification. DAG size of input: 101 DAG size of output: 72 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 16:26:36,772 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-02 16:26:39,070 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-02 16:26:42,061 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-02 16:26:44,352 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-02 16:26:45,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:26:45,473 INFO L93 Difference]: Finished difference Result 884 states and 1044 transitions. [2023-12-02 16:26:45,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-12-02 16:26:45,474 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 4.55) internal successors, (91), 20 states have internal predecessors, (91), 5 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 7 states have call predecessors, (8), 5 states have call successors, (8) Word has length 60 [2023-12-02 16:26:45,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:26:45,477 INFO L225 Difference]: With dead ends: 884 [2023-12-02 16:26:45,477 INFO L226 Difference]: Without dead ends: 598 [2023-12-02 16:26:45,481 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 124 SyntacticMatches, 4 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2737 ImplicationChecksByTransitivity, 125.5s TimeCoverageRelationStatistics Valid=904, Invalid=6227, Unknown=9, NotChecked=0, Total=7140 [2023-12-02 16:26:45,482 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 402 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 1752 mSolverCounterSat, 91 mSolverCounterUnsat, 14 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 60.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 1857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1752 IncrementalHoareTripleChecker+Invalid, 14 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 60.4s IncrementalHoareTripleChecker+Time [2023-12-02 16:26:45,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [402 Valid, 175 Invalid, 1857 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1752 Invalid, 14 Unknown, 0 Unchecked, 60.4s Time] [2023-12-02 16:26:45,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2023-12-02 16:26:45,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 441. [2023-12-02 16:26:45,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 411 states have (on average 1.1630170316301702) internal successors, (478), 419 states have internal predecessors, (478), 18 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-02 16:26:45,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 514 transitions. [2023-12-02 16:26:45,566 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 514 transitions. Word has length 60 [2023-12-02 16:26:45,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:26:45,566 INFO L495 AbstractCegarLoop]: Abstraction has 441 states and 514 transitions. [2023-12-02 16:26:45,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 4.55) internal successors, (91), 20 states have internal predecessors, (91), 5 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 7 states have call predecessors, (8), 5 states have call successors, (8) [2023-12-02 16:26:45,566 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 514 transitions. [2023-12-02 16:26:45,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-02 16:26:45,567 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:26:45,567 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:26:45,571 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2023-12-02 16:26:45,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-12-02 16:26:45,768 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-12-02 16:26:45,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:26:45,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1164577729, now seen corresponding path program 2 times [2023-12-02 16:26:45,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:26:45,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085415405] [2023-12-02 16:26:45,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:26:45,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:26:45,775 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 16:26:45,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1687187278] [2023-12-02 16:26:45,775 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 16:26:45,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:26:45,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:26:45,776 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:26:45,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-12-02 16:26:45,820 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-02 16:26:45,820 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 16:26:45,820 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-02 16:26:45,822 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:26:45,886 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-02 16:26:45,886 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:26:45,886 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:26:45,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085415405] [2023-12-02 16:26:45,886 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 16:26:45,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1687187278] [2023-12-02 16:26:45,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1687187278] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:26:45,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:26:45,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 16:26:45,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212495427] [2023-12-02 16:26:45,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:26:45,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 16:26:45,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:26:45,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 16:26:45,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 16:26:45,888 INFO L87 Difference]: Start difference. First operand 441 states and 514 transitions. Second operand has 5 states, 3 states have (on average 14.0) internal successors, (42), 5 states have internal predecessors, (42), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-02 16:26:46,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:26:46,395 INFO L93 Difference]: Finished difference Result 443 states and 514 transitions. [2023-12-02 16:26:46,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 16:26:46,395 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 14.0) internal successors, (42), 5 states have internal predecessors, (42), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 60 [2023-12-02 16:26:46,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:26:46,397 INFO L225 Difference]: With dead ends: 443 [2023-12-02 16:26:46,397 INFO L226 Difference]: Without dead ends: 442 [2023-12-02 16:26:46,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-02 16:26:46,397 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 11 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 16:26:46,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 104 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 16:26:46,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2023-12-02 16:26:46,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 441. [2023-12-02 16:26:46,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 411 states have (on average 1.1532846715328466) internal successors, (474), 419 states have internal predecessors, (474), 18 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-02 16:26:46,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 510 transitions. [2023-12-02 16:26:46,449 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 510 transitions. Word has length 60 [2023-12-02 16:26:46,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:26:46,449 INFO L495 AbstractCegarLoop]: Abstraction has 441 states and 510 transitions. [2023-12-02 16:26:46,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 14.0) internal successors, (42), 5 states have internal predecessors, (42), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-02 16:26:46,449 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 510 transitions. [2023-12-02 16:26:46,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-02 16:26:46,450 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:26:46,450 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:26:46,454 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2023-12-02 16:26:46,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:26:46,650 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-12-02 16:26:46,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:26:46,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1821969584, now seen corresponding path program 1 times [2023-12-02 16:26:46,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:26:46,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376864431] [2023-12-02 16:26:46,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:26:46,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:26:46,657 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 16:26:46,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1497318582] [2023-12-02 16:26:46,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:26:46,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:26:46,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:26:46,659 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:26:46,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-12-02 16:26:46,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:26:46,706 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-02 16:26:46,707 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:26:46,877 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 16:26:46,877 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:26:47,211 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 16:26:47,211 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:26:47,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376864431] [2023-12-02 16:26:47,211 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 16:26:47,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1497318582] [2023-12-02 16:26:47,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1497318582] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:26:47,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1649526745] [2023-12-02 16:26:47,213 INFO L159 IcfgInterpreter]: Started Sifa with 43 locations of interest [2023-12-02 16:26:47,213 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 16:26:47,213 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 16:26:47,214 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 16:26:47,214 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 16:26:48,417 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 35 for LOIs [2023-12-02 16:26:48,424 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 16:26:48,425 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 16:27:00,841 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '34309#(and (<= 1 |#StackHeapBarrier|) (= (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~q~0#1| (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|)) (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)) (<= 0 |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start_main_~p~0#1| 1) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 10) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~b~0#1|)) (= (mod (+ |ULTIMATE.start_main_~a~0#1| 1) 2) 1) (<= |ULTIMATE.start_main_~x~0#1| 10) (<= 9223372036854775808 (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~q~0#1|)) (<= |ULTIMATE.start_main_~a~0#1| 9) (= (mod |ULTIMATE.start_main_~b~0#1| 2) 0) (<= 0 (+ |ULTIMATE.start_main_~a~0#1| 1)))' at error location [2023-12-02 16:27:00,841 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 16:27:00,841 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 16:27:00,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 15 [2023-12-02 16:27:00,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525409850] [2023-12-02 16:27:00,842 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 16:27:00,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-02 16:27:00,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:27:00,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-02 16:27:00,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=1637, Unknown=0, NotChecked=0, Total=1892 [2023-12-02 16:27:00,843 INFO L87 Difference]: Start difference. First operand 441 states and 510 transitions. Second operand has 15 states, 14 states have (on average 6.214285714285714) internal successors, (87), 13 states have internal predecessors, (87), 5 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 7 states have call predecessors, (8), 5 states have call successors, (8) [2023-12-02 16:27:04,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:27:04,247 INFO L93 Difference]: Finished difference Result 1119 states and 1301 transitions. [2023-12-02 16:27:04,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-02 16:27:04,248 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 6.214285714285714) internal successors, (87), 13 states have internal predecessors, (87), 5 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 7 states have call predecessors, (8), 5 states have call successors, (8) Word has length 61 [2023-12-02 16:27:04,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:27:04,251 INFO L225 Difference]: With dead ends: 1119 [2023-12-02 16:27:04,251 INFO L226 Difference]: Without dead ends: 828 [2023-12-02 16:27:04,253 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 127 SyntacticMatches, 12 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1968 ImplicationChecksByTransitivity, 13.0s TimeCoverageRelationStatistics Valid=652, Invalid=4178, Unknown=0, NotChecked=0, Total=4830 [2023-12-02 16:27:04,253 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 530 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 1379 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 531 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 1426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-02 16:27:04,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [531 Valid, 242 Invalid, 1426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1379 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-02 16:27:04,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 828 states. [2023-12-02 16:27:04,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 828 to 696. [2023-12-02 16:27:04,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 696 states, 655 states have (on average 1.1709923664122137) internal successors, (767), 663 states have internal predecessors, (767), 29 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2023-12-02 16:27:04,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 696 states to 696 states and 825 transitions. [2023-12-02 16:27:04,333 INFO L78 Accepts]: Start accepts. Automaton has 696 states and 825 transitions. Word has length 61 [2023-12-02 16:27:04,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:27:04,333 INFO L495 AbstractCegarLoop]: Abstraction has 696 states and 825 transitions. [2023-12-02 16:27:04,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 6.214285714285714) internal successors, (87), 13 states have internal predecessors, (87), 5 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 7 states have call predecessors, (8), 5 states have call successors, (8) [2023-12-02 16:27:04,333 INFO L276 IsEmpty]: Start isEmpty. Operand 696 states and 825 transitions. [2023-12-02 16:27:04,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-02 16:27:04,334 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:27:04,334 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:27:04,338 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2023-12-02 16:27:04,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:27:04,535 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-12-02 16:27:04,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:27:04,535 INFO L85 PathProgramCache]: Analyzing trace with hash 1192496034, now seen corresponding path program 1 times [2023-12-02 16:27:04,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:27:04,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744124334] [2023-12-02 16:27:04,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:27:04,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:27:04,544 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 16:27:04,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1466112012] [2023-12-02 16:27:04,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:27:04,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:27:04,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:27:04,545 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:27:04,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-12-02 16:27:04,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:27:04,596 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-02 16:27:04,597 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:27:05,268 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 16:27:05,268 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:27:08,176 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:27:08,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744124334] [2023-12-02 16:27:08,176 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 16:27:08,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1466112012] [2023-12-02 16:27:08,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1466112012] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:27:08,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1864450830] [2023-12-02 16:27:08,177 INFO L159 IcfgInterpreter]: Started Sifa with 37 locations of interest [2023-12-02 16:27:08,177 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 16:27:08,177 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 16:27:08,177 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 16:27:08,177 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 16:27:09,420 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 34 for LOIs [2023-12-02 16:27:09,426 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 16:27:09,427 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 16:27:31,374 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '36724#(and (<= 1 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 10) (<= (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|) 9223372036854775807) (<= (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~p~0#1|) 9223372036854775807) (<= 0 (+ 9223372036854775808 (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~p~0#1|))) (<= |ULTIMATE.start_main_~x~0#1| 10) (<= 9223372036854775808 (+ |ULTIMATE.start_main_~q~0#1| (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~p~0#1|))) (<= 0 (+ 9223372036854775808 (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|))))' at error location [2023-12-02 16:27:31,374 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 16:27:31,374 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 16:27:31,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2023-12-02 16:27:31,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633672143] [2023-12-02 16:27:31,375 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 16:27:31,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-02 16:27:31,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:27:31,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-02 16:27:31,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=373, Invalid=2176, Unknown=1, NotChecked=0, Total=2550 [2023-12-02 16:27:31,376 INFO L87 Difference]: Start difference. First operand 696 states and 825 transitions. Second operand has 12 states, 10 states have (on average 4.9) internal successors, (49), 11 states have internal predecessors, (49), 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) [2023-12-02 16:27:32,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:27:32,680 INFO L93 Difference]: Finished difference Result 727 states and 859 transitions. [2023-12-02 16:27:32,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-02 16:27:32,680 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 4.9) internal successors, (49), 11 states have internal predecessors, (49), 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 61 [2023-12-02 16:27:32,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:27:32,683 INFO L225 Difference]: With dead ends: 727 [2023-12-02 16:27:32,683 INFO L226 Difference]: Without dead ends: 726 [2023-12-02 16:27:32,684 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 121 SyntacticMatches, 5 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1311 ImplicationChecksByTransitivity, 23.1s TimeCoverageRelationStatistics Valid=486, Invalid=2935, Unknown=1, NotChecked=0, Total=3422 [2023-12-02 16:27:32,684 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 256 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 715 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-02 16:27:32,685 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [257 Valid, 132 Invalid, 727 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 715 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-02 16:27:32,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 726 states. [2023-12-02 16:27:32,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 726 to 703. [2023-12-02 16:27:32,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 703 states, 662 states have (on average 1.1691842900302114) internal successors, (774), 670 states have internal predecessors, (774), 29 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2023-12-02 16:27:32,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 832 transitions. [2023-12-02 16:27:32,777 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 832 transitions. Word has length 61 [2023-12-02 16:27:32,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:27:32,777 INFO L495 AbstractCegarLoop]: Abstraction has 703 states and 832 transitions. [2023-12-02 16:27:32,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 4.9) internal successors, (49), 11 states have internal predecessors, (49), 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) [2023-12-02 16:27:32,777 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 832 transitions. [2023-12-02 16:27:32,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-02 16:27:32,778 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:27:32,778 INFO L195 NwaCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:27:32,782 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2023-12-02 16:27:32,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:27:32,978 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-12-02 16:27:32,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:27:32,978 INFO L85 PathProgramCache]: Analyzing trace with hash 147428439, now seen corresponding path program 1 times [2023-12-02 16:27:32,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:27:32,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444418112] [2023-12-02 16:27:32,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:27:32,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:27:32,986 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 16:27:32,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [876022261] [2023-12-02 16:27:32,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:27:32,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:27:32,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:27:32,988 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:27:32,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-12-02 16:27:33,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:27:33,032 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-02 16:27:33,033 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:27:33,174 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 16:27:33,174 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:27:33,507 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 16:27:33,507 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:27:33,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444418112] [2023-12-02 16:27:33,508 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 16:27:33,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [876022261] [2023-12-02 16:27:33,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [876022261] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:27:33,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1152063485] [2023-12-02 16:27:33,509 INFO L159 IcfgInterpreter]: Started Sifa with 43 locations of interest [2023-12-02 16:27:33,509 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 16:27:33,509 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 16:27:33,509 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 16:27:33,509 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 16:27:34,907 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 35 for LOIs [2023-12-02 16:27:34,915 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 16:27:34,916 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 16:27:47,158 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '38706#(and (<= 1 |#StackHeapBarrier|) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~a~0#1|)) (<= 0 |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start_main_~p~0#1| 1) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 10) (<= |ULTIMATE.start_main_~b~0#1| 9) (<= 0 (+ |ULTIMATE.start_main_~b~0#1| 1)) (<= |ULTIMATE.start_main_~x~0#1| 10) (= (+ |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~q~0#1| (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|)) (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)) (= (mod (+ |ULTIMATE.start_main_~b~0#1| 1) 2) 1) (= (mod |ULTIMATE.start_main_~a~0#1| 2) 0) (<= 9223372036854775808 (+ |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~q~0#1|)))' at error location [2023-12-02 16:27:47,158 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 16:27:47,158 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 16:27:47,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 14 [2023-12-02 16:27:47,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89272251] [2023-12-02 16:27:47,159 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 16:27:47,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:27:47,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:27:47,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:27:47,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=1551, Unknown=0, NotChecked=0, Total=1806 [2023-12-02 16:27:47,160 INFO L87 Difference]: Start difference. First operand 703 states and 832 transitions. Second operand has 14 states, 13 states have (on average 6.923076923076923) internal successors, (90), 14 states have internal predecessors, (90), 7 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (10), 6 states have call predecessors, (10), 7 states have call successors, (10) [2023-12-02 16:27:48,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:27:48,594 INFO L93 Difference]: Finished difference Result 1267 states and 1494 transitions. [2023-12-02 16:27:48,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-02 16:27:48,595 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 6.923076923076923) internal successors, (90), 14 states have internal predecessors, (90), 7 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (10), 6 states have call predecessors, (10), 7 states have call successors, (10) Word has length 62 [2023-12-02 16:27:48,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:27:48,598 INFO L225 Difference]: With dead ends: 1267 [2023-12-02 16:27:48,598 INFO L226 Difference]: Without dead ends: 781 [2023-12-02 16:27:48,599 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 131 SyntacticMatches, 12 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1255 ImplicationChecksByTransitivity, 12.6s TimeCoverageRelationStatistics Valid=394, Invalid=2576, Unknown=0, NotChecked=0, Total=2970 [2023-12-02 16:27:48,599 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 371 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 591 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 591 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:27:48,599 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [372 Valid, 110 Invalid, 629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 591 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-02 16:27:48,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 781 states. [2023-12-02 16:27:48,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 781 to 693. [2023-12-02 16:27:48,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 693 states, 653 states have (on average 1.1546707503828484) internal successors, (754), 661 states have internal predecessors, (754), 28 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2023-12-02 16:27:48,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 810 transitions. [2023-12-02 16:27:48,692 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 810 transitions. Word has length 62 [2023-12-02 16:27:48,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:27:48,692 INFO L495 AbstractCegarLoop]: Abstraction has 693 states and 810 transitions. [2023-12-02 16:27:48,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 6.923076923076923) internal successors, (90), 14 states have internal predecessors, (90), 7 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (10), 6 states have call predecessors, (10), 7 states have call successors, (10) [2023-12-02 16:27:48,692 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 810 transitions. [2023-12-02 16:27:48,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-02 16:27:48,693 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:27:48,693 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:27:48,697 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2023-12-02 16:27:48,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:27:48,893 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-12-02 16:27:48,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:27:48,894 INFO L85 PathProgramCache]: Analyzing trace with hash 1490661484, now seen corresponding path program 1 times [2023-12-02 16:27:48,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:27:48,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791662278] [2023-12-02 16:27:48,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:27:48,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:27:48,901 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 16:27:48,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [187174650] [2023-12-02 16:27:48,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:27:48,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:27:48,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:27:48,902 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:27:48,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-12-02 16:27:48,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:27:48,951 INFO L262 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-02 16:27:48,952 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:27:49,416 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-02 16:27:49,416 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:27:49,702 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:27:49,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791662278] [2023-12-02 16:27:49,703 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 16:27:49,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [187174650] [2023-12-02 16:27:49,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [187174650] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:27:49,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [64115615] [2023-12-02 16:27:49,704 INFO L159 IcfgInterpreter]: Started Sifa with 43 locations of interest [2023-12-02 16:27:49,704 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 16:27:49,704 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 16:27:49,705 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 16:27:49,705 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 16:27:51,277 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 34 for LOIs [2023-12-02 16:27:51,283 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 16:27:51,284 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 16:28:28,523 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '41167#(and (<= 1 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 10) (<= (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|) 9223372036854775807) (<= |ULTIMATE.start_main_~x~0#1| 10) (<= 9223372036854775808 (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~p~0#1|)) (<= 0 (+ 9223372036854775808 (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|))))' at error location [2023-12-02 16:28:28,523 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 16:28:28,523 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 16:28:28,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2023-12-02 16:28:28,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035152582] [2023-12-02 16:28:28,524 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 16:28:28,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-02 16:28:28,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:28:28,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-02 16:28:28,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=344, Invalid=2307, Unknown=1, NotChecked=0, Total=2652 [2023-12-02 16:28:28,525 INFO L87 Difference]: Start difference. First operand 693 states and 810 transitions. Second operand has 13 states, 10 states have (on average 5.2) internal successors, (52), 11 states have internal predecessors, (52), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-02 16:28:29,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:28:29,571 INFO L93 Difference]: Finished difference Result 865 states and 1006 transitions. [2023-12-02 16:28:29,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:28:29,572 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 10 states have (on average 5.2) internal successors, (52), 11 states have internal predecessors, (52), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 65 [2023-12-02 16:28:29,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:28:29,575 INFO L225 Difference]: With dead ends: 865 [2023-12-02 16:28:29,575 INFO L226 Difference]: Without dead ends: 861 [2023-12-02 16:28:29,575 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 93 SyntacticMatches, 8 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1203 ImplicationChecksByTransitivity, 37.7s TimeCoverageRelationStatistics Valid=437, Invalid=3102, Unknown=1, NotChecked=0, Total=3540 [2023-12-02 16:28:29,576 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 172 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 943 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 964 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 943 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-02 16:28:29,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 168 Invalid, 964 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 943 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-02 16:28:29,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 861 states. [2023-12-02 16:28:29,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 861 to 852. [2023-12-02 16:28:29,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 852 states, 806 states have (on average 1.1401985111662531) internal successors, (919), 814 states have internal predecessors, (919), 34 states have call successors, (34), 3 states have call predecessors, (34), 3 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-02 16:28:29,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 987 transitions. [2023-12-02 16:28:29,678 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 987 transitions. Word has length 65 [2023-12-02 16:28:29,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:28:29,678 INFO L495 AbstractCegarLoop]: Abstraction has 852 states and 987 transitions. [2023-12-02 16:28:29,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 10 states have (on average 5.2) internal successors, (52), 11 states have internal predecessors, (52), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-02 16:28:29,678 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 987 transitions. [2023-12-02 16:28:29,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-12-02 16:28:29,679 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:28:29,679 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:28:29,683 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2023-12-02 16:28:29,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2023-12-02 16:28:29,880 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-12-02 16:28:29,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:28:29,880 INFO L85 PathProgramCache]: Analyzing trace with hash -1993388946, now seen corresponding path program 1 times [2023-12-02 16:28:29,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:28:29,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294749216] [2023-12-02 16:28:29,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:28:29,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:28:29,885 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 16:28:29,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [985547438] [2023-12-02 16:28:29,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:28:29,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:28:29,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:28:29,887 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:28:29,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-12-02 16:28:29,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:28:29,932 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 38 conjunts are in the unsatisfiable core [2023-12-02 16:28:29,934 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:28:30,696 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-02 16:28:30,696 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:28:36,631 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:28:36,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294749216] [2023-12-02 16:28:36,631 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 16:28:36,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [985547438] [2023-12-02 16:28:36,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [985547438] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:28:36,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [56154560] [2023-12-02 16:28:36,632 INFO L159 IcfgInterpreter]: Started Sifa with 43 locations of interest [2023-12-02 16:28:36,632 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 16:28:36,632 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 16:28:36,632 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 16:28:36,632 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 16:28:38,034 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 34 for LOIs [2023-12-02 16:28:38,041 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 16:28:38,042 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 16:29:19,364 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '43485#(and (<= 1 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 10) (<= |ULTIMATE.start_main_~x~0#1| 10) (<= 9223372036854775808 (+ |ULTIMATE.start_main_~q~0#1| (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~p~0#1|))))' at error location [2023-12-02 16:29:19,364 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 16:29:19,364 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 16:29:19,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2023-12-02 16:29:19,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928107001] [2023-12-02 16:29:19,364 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 16:29:19,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:29:19,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:29:19,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:29:19,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=508, Invalid=2911, Unknown=3, NotChecked=0, Total=3422 [2023-12-02 16:29:19,365 INFO L87 Difference]: Start difference. First operand 852 states and 987 transitions. Second operand has 14 states, 11 states have (on average 4.909090909090909) internal successors, (54), 12 states have internal predecessors, (54), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-02 16:29:21,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:29:21,239 INFO L93 Difference]: Finished difference Result 877 states and 1014 transitions. [2023-12-02 16:29:21,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-02 16:29:21,240 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 4.909090909090909) internal successors, (54), 12 states have internal predecessors, (54), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 67 [2023-12-02 16:29:21,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:29:21,244 INFO L225 Difference]: With dead ends: 877 [2023-12-02 16:29:21,244 INFO L226 Difference]: Without dead ends: 876 [2023-12-02 16:29:21,245 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 127 SyntacticMatches, 9 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1833 ImplicationChecksByTransitivity, 45.7s TimeCoverageRelationStatistics Valid=683, Invalid=4006, Unknown=3, NotChecked=0, Total=4692 [2023-12-02 16:29:21,245 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 373 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 905 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 374 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 905 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-02 16:29:21,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [374 Valid, 142 Invalid, 923 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 905 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-02 16:29:21,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 876 states. [2023-12-02 16:29:21,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 876 to 859. [2023-12-02 16:29:21,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 859 states, 813 states have (on average 1.138991389913899) internal successors, (926), 821 states have internal predecessors, (926), 34 states have call successors, (34), 3 states have call predecessors, (34), 3 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-02 16:29:21,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 859 states to 859 states and 994 transitions. [2023-12-02 16:29:21,353 INFO L78 Accepts]: Start accepts. Automaton has 859 states and 994 transitions. Word has length 67 [2023-12-02 16:29:21,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:29:21,353 INFO L495 AbstractCegarLoop]: Abstraction has 859 states and 994 transitions. [2023-12-02 16:29:21,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 4.909090909090909) internal successors, (54), 12 states have internal predecessors, (54), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-02 16:29:21,353 INFO L276 IsEmpty]: Start isEmpty. Operand 859 states and 994 transitions. [2023-12-02 16:29:21,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-02 16:29:21,354 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:29:21,354 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1] [2023-12-02 16:29:21,358 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2023-12-02 16:29:21,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-12-02 16:29:21,554 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr37ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-12-02 16:29:21,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:29:21,555 INFO L85 PathProgramCache]: Analyzing trace with hash 859384139, now seen corresponding path program 1 times [2023-12-02 16:29:21,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:29:21,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195094462] [2023-12-02 16:29:21,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:29:21,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:29:21,562 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 16:29:21,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [514465649] [2023-12-02 16:29:21,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:29:21,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:29:21,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:29:21,563 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:29:21,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2023-12-02 16:29:21,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:29:21,611 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-02 16:29:21,613 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:29:22,009 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 13 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 16:29:22,009 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:29:22,722 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 16:29:22,722 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:29:22,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195094462] [2023-12-02 16:29:22,722 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 16:29:22,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [514465649] [2023-12-02 16:29:22,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [514465649] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-02 16:29:22,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 16:29:22,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [12] total 21 [2023-12-02 16:29:22,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995312955] [2023-12-02 16:29:22,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:29:22,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-02 16:29:22,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:29:22,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-02 16:29:22,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=319, Unknown=0, NotChecked=0, Total=420 [2023-12-02 16:29:22,723 INFO L87 Difference]: Start difference. First operand 859 states and 994 transitions. Second operand has 12 states, 11 states have (on average 5.090909090909091) internal successors, (56), 11 states have internal predecessors, (56), 3 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2023-12-02 16:29:23,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:29:23,803 INFO L93 Difference]: Finished difference Result 957 states and 1100 transitions. [2023-12-02 16:29:23,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-02 16:29:23,804 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.090909090909091) internal successors, (56), 11 states have internal predecessors, (56), 3 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 68 [2023-12-02 16:29:23,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:29:23,806 INFO L225 Difference]: With dead ends: 957 [2023-12-02 16:29:23,806 INFO L226 Difference]: Without dead ends: 704 [2023-12-02 16:29:23,807 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 114 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=164, Invalid=592, Unknown=0, NotChecked=0, Total=756 [2023-12-02 16:29:23,807 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 126 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-02 16:29:23,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 73 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 348 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-02 16:29:23,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2023-12-02 16:29:23,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 696. [2023-12-02 16:29:23,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 696 states, 655 states have (on average 1.1404580152671755) internal successors, (747), 663 states have internal predecessors, (747), 29 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2023-12-02 16:29:23,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 696 states to 696 states and 805 transitions. [2023-12-02 16:29:23,902 INFO L78 Accepts]: Start accepts. Automaton has 696 states and 805 transitions. Word has length 68 [2023-12-02 16:29:23,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:29:23,903 INFO L495 AbstractCegarLoop]: Abstraction has 696 states and 805 transitions. [2023-12-02 16:29:23,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.090909090909091) internal successors, (56), 11 states have internal predecessors, (56), 3 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2023-12-02 16:29:23,903 INFO L276 IsEmpty]: Start isEmpty. Operand 696 states and 805 transitions. [2023-12-02 16:29:23,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-02 16:29:23,904 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:29:23,904 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:29:23,908 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2023-12-02 16:29:24,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2023-12-02 16:29:24,104 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-12-02 16:29:24,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:29:24,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1250705549, now seen corresponding path program 1 times [2023-12-02 16:29:24,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:29:24,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206409492] [2023-12-02 16:29:24,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:29:24,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:29:24,112 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 16:29:24,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1264901445] [2023-12-02 16:29:24,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:29:24,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:29:24,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:29:24,113 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:29:24,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2023-12-02 16:29:24,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:29:24,168 INFO L262 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-02 16:29:24,169 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:29:24,613 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-02 16:29:24,613 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:29:49,284 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-02 16:29:49,284 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:29:49,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206409492] [2023-12-02 16:29:49,284 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 16:29:49,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1264901445] [2023-12-02 16:29:49,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1264901445] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:29:49,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [35124619] [2023-12-02 16:29:49,285 INFO L159 IcfgInterpreter]: Started Sifa with 35 locations of interest [2023-12-02 16:29:49,285 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 16:29:49,285 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 16:29:49,285 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 16:29:49,286 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 16:29:50,873 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 32 for LOIs [2023-12-02 16:29:50,879 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 16:29:50,880 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 16:30:59,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [35124619] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:30:59,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 16:30:59,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [11, 10] total 45 [2023-12-02 16:30:59,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955844750] [2023-12-02 16:30:59,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:30:59,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-02 16:30:59,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:30:59,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-02 16:30:59,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=390, Invalid=1668, Unknown=12, NotChecked=0, Total=2070 [2023-12-02 16:30:59,985 INFO L87 Difference]: Start difference. First operand 696 states and 805 transitions. Second operand has 28 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 21 states have internal predecessors, (29), 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) [2023-12-02 16:31:06,311 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 16:31:07,838 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 16:31:09,843 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 16:31:11,846 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 16:31:19,705 WARN L293 SmtUtils]: Spent 5.81s on a formula simplification. DAG size of input: 87 DAG size of output: 80 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 16:31:21,269 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 16:31:27,548 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 16:31:35,573 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 16:31:47,896 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 16:31:49,262 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 16:31:50,391 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 16:32:04,658 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 16:32:06,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:32:06,462 INFO L93 Difference]: Finished difference Result 697 states and 805 transitions. [2023-12-02 16:32:06,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-02 16:32:06,463 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 21 states have internal predecessors, (29), 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) Word has length 72 [2023-12-02 16:32:06,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:32:06,465 INFO L225 Difference]: With dead ends: 697 [2023-12-02 16:32:06,465 INFO L226 Difference]: Without dead ends: 696 [2023-12-02 16:32:06,466 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 160 SyntacticMatches, 10 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1503 ImplicationChecksByTransitivity, 113.8s TimeCoverageRelationStatistics Valid=874, Invalid=3145, Unknown=13, NotChecked=0, Total=4032 [2023-12-02 16:32:06,466 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 327 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 907 mSolverCounterSat, 20 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 907 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.6s IncrementalHoareTripleChecker+Time [2023-12-02 16:32:06,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [328 Valid, 118 Invalid, 931 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 907 Invalid, 4 Unknown, 0 Unchecked, 27.6s Time] [2023-12-02 16:32:06,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2023-12-02 16:32:06,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 696. [2023-12-02 16:32:06,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 696 states, 655 states have (on average 1.1389312977099237) internal successors, (746), 663 states have internal predecessors, (746), 29 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2023-12-02 16:32:06,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 696 states to 696 states and 804 transitions. [2023-12-02 16:32:06,557 INFO L78 Accepts]: Start accepts. Automaton has 696 states and 804 transitions. Word has length 72 [2023-12-02 16:32:06,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:32:06,558 INFO L495 AbstractCegarLoop]: Abstraction has 696 states and 804 transitions. [2023-12-02 16:32:06,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 21 states have internal predecessors, (29), 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) [2023-12-02 16:32:06,558 INFO L276 IsEmpty]: Start isEmpty. Operand 696 states and 804 transitions. [2023-12-02 16:32:06,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-02 16:32:06,558 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:32:06,558 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:32:06,563 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2023-12-02 16:32:06,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-12-02 16:32:06,759 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-12-02 16:32:06,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:32:06,759 INFO L85 PathProgramCache]: Analyzing trace with hash -1605438593, now seen corresponding path program 1 times [2023-12-02 16:32:06,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:32:06,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022756101] [2023-12-02 16:32:06,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:32:06,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:32:06,766 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 16:32:06,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1262260934] [2023-12-02 16:32:06,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:32:06,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:32:06,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:32:06,767 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:32:06,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aab5686-7faf-43f7-a36c-6b81cfd1b025/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2023-12-02 16:32:06,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:32:06,816 INFO L262 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-02 16:32:06,817 INFO L285 TraceCheckSpWp]: Computing forward predicates...