./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/ps2-ll_valuebound100.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_f8353838-71d6-41e4-8cfc-50e2faac1b6a/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8353838-71d6-41e4-8cfc-50e2faac1b6a/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_f8353838-71d6-41e4-8cfc-50e2faac1b6a/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8353838-71d6-41e4-8cfc-50e2faac1b6a/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/ps2-ll_valuebound100.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8353838-71d6-41e4-8cfc-50e2faac1b6a/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_f8353838-71d6-41e4-8cfc-50e2faac1b6a/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 3d083d1689aabbf2f9bd2c9523429b32bf33c71fcafd2ea04f6cb909fe9a2705 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 18:34:39,086 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 18:34:39,155 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8353838-71d6-41e4-8cfc-50e2faac1b6a/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-12-02 18:34:39,161 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 18:34:39,161 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 18:34:39,183 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 18:34:39,183 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 18:34:39,184 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 18:34:39,185 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 18:34:39,185 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 18:34:39,186 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 18:34:39,186 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 18:34:39,187 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 18:34:39,187 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 18:34:39,188 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 18:34:39,188 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 18:34:39,189 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 18:34:39,189 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 18:34:39,190 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 18:34:39,190 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 18:34:39,191 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 18:34:39,191 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 18:34:39,192 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 18:34:39,192 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 18:34:39,193 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 18:34:39,193 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 18:34:39,194 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 18:34:39,194 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 18:34:39,195 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 18:34:39,195 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 18:34:39,195 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 18:34:39,196 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-12-02 18:34:39,196 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 18:34:39,197 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 18:34:39,197 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 18:34:39,197 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 18:34:39,198 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 18:34:39,198 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 18:34:39,198 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 18:34:39,198 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 18:34:39,198 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 18:34:39,199 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 18:34:39,199 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 18:34:39,199 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 18:34:39,199 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 18:34:39,200 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 18:34:39,200 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 18:34:39,200 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 18:34:39,200 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 18:34:39,200 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_f8353838-71d6-41e4-8cfc-50e2faac1b6a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8353838-71d6-41e4-8cfc-50e2faac1b6a/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3d083d1689aabbf2f9bd2c9523429b32bf33c71fcafd2ea04f6cb909fe9a2705 [2023-12-02 18:34:39,450 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 18:34:39,470 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 18:34:39,473 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 18:34:39,474 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 18:34:39,475 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 18:34:39,476 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8353838-71d6-41e4-8cfc-50e2faac1b6a/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/nla-digbench-scaling/ps2-ll_valuebound100.c [2023-12-02 18:34:42,190 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 18:34:42,354 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 18:34:42,354 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8353838-71d6-41e4-8cfc-50e2faac1b6a/sv-benchmarks/c/nla-digbench-scaling/ps2-ll_valuebound100.c [2023-12-02 18:34:42,360 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8353838-71d6-41e4-8cfc-50e2faac1b6a/bin/utaipan-verify-nQ1chXbOIh/data/c42394b24/b71aa433c0034cc5b20f756fbe50dc6c/FLAG00e29c6ad [2023-12-02 18:34:42,746 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8353838-71d6-41e4-8cfc-50e2faac1b6a/bin/utaipan-verify-nQ1chXbOIh/data/c42394b24/b71aa433c0034cc5b20f756fbe50dc6c [2023-12-02 18:34:42,748 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 18:34:42,749 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 18:34:42,750 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 18:34:42,750 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 18:34:42,754 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 18:34:42,755 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:34:42" (1/1) ... [2023-12-02 18:34:42,756 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f492c8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:34:42, skipping insertion in model container [2023-12-02 18:34:42,756 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:34:42" (1/1) ... [2023-12-02 18:34:42,777 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 18:34:42,931 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 18:34:42,939 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 18:34:42,952 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 18:34:42,966 INFO L206 MainTranslator]: Completed translation [2023-12-02 18:34:42,967 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:34:42 WrapperNode [2023-12-02 18:34:42,967 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 18:34:42,968 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 18:34:42,968 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 18:34:42,968 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 18:34:42,975 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:34:42" (1/1) ... [2023-12-02 18:34:42,982 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:34:42" (1/1) ... [2023-12-02 18:34:43,001 INFO L138 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 65 [2023-12-02 18:34:43,002 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 18:34:43,002 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 18:34:43,002 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 18:34:43,002 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 18:34:43,011 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:34:42" (1/1) ... [2023-12-02 18:34:43,011 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:34:42" (1/1) ... [2023-12-02 18:34:43,012 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:34:42" (1/1) ... [2023-12-02 18:34:43,012 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:34:42" (1/1) ... [2023-12-02 18:34:43,014 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:34:42" (1/1) ... [2023-12-02 18:34:43,017 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:34:42" (1/1) ... [2023-12-02 18:34:43,017 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:34:42" (1/1) ... [2023-12-02 18:34:43,018 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:34:42" (1/1) ... [2023-12-02 18:34:43,019 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 18:34:43,020 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 18:34:43,020 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 18:34:43,020 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 18:34:43,021 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:34:42" (1/1) ... [2023-12-02 18:34:43,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 18:34:43,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8353838-71d6-41e4-8cfc-50e2faac1b6a/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:34:43,052 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8353838-71d6-41e4-8cfc-50e2faac1b6a/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 18:34:43,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8353838-71d6-41e4-8cfc-50e2faac1b6a/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 18:34:43,089 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 18:34:43,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 18:34:43,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 18:34:43,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 18:34:43,090 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-02 18:34:43,090 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-02 18:34:43,144 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 18:34:43,146 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 18:34:43,321 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 18:34:43,366 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 18:34:43,366 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 18:34:43,368 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:34:43 BoogieIcfgContainer [2023-12-02 18:34:43,368 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 18:34:43,371 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 18:34:43,371 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 18:34:43,375 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 18:34:43,375 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 06:34:42" (1/3) ... [2023-12-02 18:34:43,376 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@623e829d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:34:43, skipping insertion in model container [2023-12-02 18:34:43,376 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:34:42" (2/3) ... [2023-12-02 18:34:43,376 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@623e829d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:34:43, skipping insertion in model container [2023-12-02 18:34:43,377 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:34:43" (3/3) ... [2023-12-02 18:34:43,378 INFO L112 eAbstractionObserver]: Analyzing ICFG ps2-ll_valuebound100.c [2023-12-02 18:34:43,397 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 18:34:43,398 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2023-12-02 18:34:43,440 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 18:34:43,445 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;@704914, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 18:34:43,445 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-12-02 18:34:43,449 INFO L276 IsEmpty]: Start isEmpty. Operand has 53 states, 27 states have (on average 1.8888888888888888) internal successors, (51), 49 states have internal predecessors, (51), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 18:34:43,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-12-02 18:34:43,453 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:34:43,454 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-12-02 18:34:43,454 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-12-02 18:34:43,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:34:43,458 INFO L85 PathProgramCache]: Analyzing trace with hash 130312, now seen corresponding path program 1 times [2023-12-02 18:34:43,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:34:43,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141627358] [2023-12-02 18:34:43,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:34:43,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:34:43,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:34:43,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:34:43,587 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:34:43,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141627358] [2023-12-02 18:34:43,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141627358] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:34:43,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:34:43,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-12-02 18:34:43,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702779002] [2023-12-02 18:34:43,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:34:43,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-02 18:34:43,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:34:43,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-02 18:34:43,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 18:34:43,615 INFO L87 Difference]: Start difference. First operand has 53 states, 27 states have (on average 1.8888888888888888) internal successors, (51), 49 states have internal predecessors, (51), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 1 states have (on average 3.0) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:34:43,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:34:43,643 INFO L93 Difference]: Finished difference Result 73 states and 75 transitions. [2023-12-02 18:34:43,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 18:34:43,645 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 3.0) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-12-02 18:34:43,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:34:43,650 INFO L225 Difference]: With dead ends: 73 [2023-12-02 18:34:43,650 INFO L226 Difference]: Without dead ends: 48 [2023-12-02 18:34:43,653 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 18:34:43,656 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 18:34:43,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 49 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 18:34:43,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2023-12-02 18:34:43,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2023-12-02 18:34:43,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 26 states have (on average 1.7692307692307692) internal successors, (46), 45 states have internal predecessors, (46), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 18:34:43,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 48 transitions. [2023-12-02 18:34:43,688 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 48 transitions. Word has length 3 [2023-12-02 18:34:43,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:34:43,688 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 48 transitions. [2023-12-02 18:34:43,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 3.0) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:34:43,689 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 48 transitions. [2023-12-02 18:34:43,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-12-02 18:34:43,689 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:34:43,689 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-12-02 18:34:43,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 18:34:43,690 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-12-02 18:34:43,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:34:43,691 INFO L85 PathProgramCache]: Analyzing trace with hash 4039724, now seen corresponding path program 1 times [2023-12-02 18:34:43,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:34:43,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651088475] [2023-12-02 18:34:43,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:34:43,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:34:43,704 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 18:34:43,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [109421440] [2023-12-02 18:34:43,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:34:43,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:34:43,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8353838-71d6-41e4-8cfc-50e2faac1b6a/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:34:43,713 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8353838-71d6-41e4-8cfc-50e2faac1b6a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:34:43,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8353838-71d6-41e4-8cfc-50e2faac1b6a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 18:34:43,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:34:43,765 INFO L262 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 18:34:43,769 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:34:43,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:34:43,791 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:34:43,792 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:34:43,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651088475] [2023-12-02 18:34:43,792 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 18:34:43,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [109421440] [2023-12-02 18:34:43,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [109421440] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:34:43,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:34:43,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-12-02 18:34:43,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17916573] [2023-12-02 18:34:43,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:34:43,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 18:34:43,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:34:43,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 18:34:43,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 18:34:43,796 INFO L87 Difference]: Start difference. First operand 48 states and 48 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:34:43,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:34:43,895 INFO L93 Difference]: Finished difference Result 89 states and 90 transitions. [2023-12-02 18:34:43,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 18:34:43,896 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-12-02 18:34:43,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:34:43,897 INFO L225 Difference]: With dead ends: 89 [2023-12-02 18:34:43,898 INFO L226 Difference]: Without dead ends: 85 [2023-12-02 18:34:43,898 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 18:34:43,899 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 33 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 18:34:43,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 42 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 18:34:43,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2023-12-02 18:34:43,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 65. [2023-12-02 18:34:43,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 42 states have (on average 1.6904761904761905) internal successors, (71), 61 states have internal predecessors, (71), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 18:34:43,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 75 transitions. [2023-12-02 18:34:43,910 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 75 transitions. Word has length 4 [2023-12-02 18:34:43,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:34:43,910 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 75 transitions. [2023-12-02 18:34:43,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:34:43,911 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 75 transitions. [2023-12-02 18:34:43,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-12-02 18:34:43,911 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:34:43,911 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-12-02 18:34:43,917 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8353838-71d6-41e4-8cfc-50e2faac1b6a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 18:34:44,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8353838-71d6-41e4-8cfc-50e2faac1b6a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:34:44,112 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-12-02 18:34:44,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:34:44,113 INFO L85 PathProgramCache]: Analyzing trace with hash 125231498, now seen corresponding path program 1 times [2023-12-02 18:34:44,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:34:44,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050721637] [2023-12-02 18:34:44,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:34:44,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:34:44,124 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 18:34:44,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [687132537] [2023-12-02 18:34:44,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:34:44,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:34:44,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8353838-71d6-41e4-8cfc-50e2faac1b6a/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:34:44,126 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8353838-71d6-41e4-8cfc-50e2faac1b6a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:34:44,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8353838-71d6-41e4-8cfc-50e2faac1b6a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 18:34:44,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:34:44,165 INFO L262 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 18:34:44,166 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:34:44,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:34:44,177 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:34:44,177 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:34:44,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050721637] [2023-12-02 18:34:44,177 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 18:34:44,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [687132537] [2023-12-02 18:34:44,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [687132537] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:34:44,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:34:44,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-12-02 18:34:44,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544353878] [2023-12-02 18:34:44,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:34:44,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 18:34:44,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:34:44,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 18:34:44,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 18:34:44,180 INFO L87 Difference]: Start difference. First operand 65 states and 75 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:34:44,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:34:44,292 INFO L93 Difference]: Finished difference Result 83 states and 90 transitions. [2023-12-02 18:34:44,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 18:34:44,292 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-12-02 18:34:44,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:34:44,293 INFO L225 Difference]: With dead ends: 83 [2023-12-02 18:34:44,294 INFO L226 Difference]: Without dead ends: 81 [2023-12-02 18:34:44,294 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 18:34:44,295 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 34 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 18:34:44,296 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 40 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 18:34:44,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2023-12-02 18:34:44,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 66. [2023-12-02 18:34:44,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 43 states have (on average 1.6511627906976745) internal successors, (71), 62 states have internal predecessors, (71), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 18:34:44,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 75 transitions. [2023-12-02 18:34:44,305 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 75 transitions. Word has length 5 [2023-12-02 18:34:44,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:34:44,305 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 75 transitions. [2023-12-02 18:34:44,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:34:44,305 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 75 transitions. [2023-12-02 18:34:44,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-12-02 18:34:44,306 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:34:44,306 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-12-02 18:34:44,311 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8353838-71d6-41e4-8cfc-50e2faac1b6a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-02 18:34:44,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8353838-71d6-41e4-8cfc-50e2faac1b6a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:34:44,507 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-12-02 18:34:44,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:34:44,507 INFO L85 PathProgramCache]: Analyzing trace with hash -412790802, now seen corresponding path program 1 times [2023-12-02 18:34:44,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:34:44,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609867695] [2023-12-02 18:34:44,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:34:44,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:34:44,516 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 18:34:44,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1830279284] [2023-12-02 18:34:44,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:34:44,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:34:44,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8353838-71d6-41e4-8cfc-50e2faac1b6a/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:34:44,518 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8353838-71d6-41e4-8cfc-50e2faac1b6a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:34:44,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8353838-71d6-41e4-8cfc-50e2faac1b6a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-02 18:34:44,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:34:44,552 INFO L262 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 18:34:44,552 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:34:44,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:34:44,564 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:34:44,564 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:34:44,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609867695] [2023-12-02 18:34:44,564 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 18:34:44,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1830279284] [2023-12-02 18:34:44,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1830279284] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:34:44,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:34:44,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-12-02 18:34:44,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443149870] [2023-12-02 18:34:44,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:34:44,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 18:34:44,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:34:44,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 18:34:44,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 18:34:44,566 INFO L87 Difference]: Start difference. First operand 66 states and 75 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:34:44,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:34:44,654 INFO L93 Difference]: Finished difference Result 87 states and 88 transitions. [2023-12-02 18:34:44,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 18:34:44,654 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-12-02 18:34:44,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:34:44,655 INFO L225 Difference]: With dead ends: 87 [2023-12-02 18:34:44,655 INFO L226 Difference]: Without dead ends: 81 [2023-12-02 18:34:44,656 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 18:34:44,657 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 27 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 18:34:44,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 46 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 18:34:44,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2023-12-02 18:34:44,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 70. [2023-12-02 18:34:44,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 47 states have (on average 1.553191489361702) internal successors, (73), 66 states have internal predecessors, (73), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 18:34:44,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 77 transitions. [2023-12-02 18:34:44,664 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 77 transitions. Word has length 6 [2023-12-02 18:34:44,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:34:44,664 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 77 transitions. [2023-12-02 18:34:44,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:34:44,664 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 77 transitions. [2023-12-02 18:34:44,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-12-02 18:34:44,665 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:34:44,665 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:34:44,669 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8353838-71d6-41e4-8cfc-50e2faac1b6a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-02 18:34:44,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8353838-71d6-41e4-8cfc-50e2faac1b6a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:34:44,866 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-12-02 18:34:44,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:34:44,866 INFO L85 PathProgramCache]: Analyzing trace with hash -1554967632, now seen corresponding path program 1 times [2023-12-02 18:34:44,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:34:44,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011398435] [2023-12-02 18:34:44,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:34:44,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:34:44,873 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 18:34:44,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [202981062] [2023-12-02 18:34:44,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:34:44,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:34:44,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8353838-71d6-41e4-8cfc-50e2faac1b6a/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:34:44,874 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8353838-71d6-41e4-8cfc-50e2faac1b6a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:34:44,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8353838-71d6-41e4-8cfc-50e2faac1b6a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-02 18:34:44,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:34:44,907 INFO L262 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 18:34:44,908 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:34:44,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:34:44,985 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:34:44,985 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:34:44,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011398435] [2023-12-02 18:34:44,986 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 18:34:44,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [202981062] [2023-12-02 18:34:44,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [202981062] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:34:44,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:34:44,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 18:34:44,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498580125] [2023-12-02 18:34:44,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:34:44,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 18:34:44,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:34:44,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 18:34:44,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 18:34:44,988 INFO L87 Difference]: Start difference. First operand 70 states and 77 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:34:45,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:34:45,146 INFO L93 Difference]: Finished difference Result 81 states and 82 transitions. [2023-12-02 18:34:45,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 18:34:45,147 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-12-02 18:34:45,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:34:45,158 INFO L225 Difference]: With dead ends: 81 [2023-12-02 18:34:45,158 INFO L226 Difference]: Without dead ends: 69 [2023-12-02 18:34:45,158 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 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 18:34:45,159 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 23 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 18:34:45,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 53 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 18:34:45,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2023-12-02 18:34:45,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 63. [2023-12-02 18:34:45,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 40 states have (on average 1.55) internal successors, (62), 59 states have internal predecessors, (62), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 18:34:45,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 66 transitions. [2023-12-02 18:34:45,171 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 66 transitions. Word has length 8 [2023-12-02 18:34:45,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:34:45,171 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 66 transitions. [2023-12-02 18:34:45,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:34:45,171 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 66 transitions. [2023-12-02 18:34:45,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-02 18:34:45,172 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:34:45,172 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:34:45,177 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8353838-71d6-41e4-8cfc-50e2faac1b6a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-02 18:34:45,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8353838-71d6-41e4-8cfc-50e2faac1b6a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:34:45,373 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-12-02 18:34:45,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:34:45,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1804289987, now seen corresponding path program 1 times [2023-12-02 18:34:45,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:34:45,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916281612] [2023-12-02 18:34:45,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:34:45,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:34:45,383 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 18:34:45,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1095364475] [2023-12-02 18:34:45,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:34:45,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:34:45,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8353838-71d6-41e4-8cfc-50e2faac1b6a/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:34:45,385 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8353838-71d6-41e4-8cfc-50e2faac1b6a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:34:45,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8353838-71d6-41e4-8cfc-50e2faac1b6a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-02 18:34:45,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:34:45,422 INFO L262 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 18:34:45,423 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:34:45,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:34:45,458 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:34:45,458 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:34:45,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916281612] [2023-12-02 18:34:45,458 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 18:34:45,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1095364475] [2023-12-02 18:34:45,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1095364475] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:34:45,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:34:45,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 18:34:45,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102796034] [2023-12-02 18:34:45,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:34:45,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 18:34:45,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:34:45,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 18:34:45,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 18:34:45,460 INFO L87 Difference]: Start difference. First operand 63 states and 66 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 18:34:45,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:34:45,473 INFO L93 Difference]: Finished difference Result 63 states and 66 transitions. [2023-12-02 18:34:45,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 18:34:45,473 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2023-12-02 18:34:45,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:34:45,474 INFO L225 Difference]: With dead ends: 63 [2023-12-02 18:34:45,474 INFO L226 Difference]: Without dead ends: 62 [2023-12-02 18:34:45,474 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 18:34:45,475 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 32 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 18:34:45,475 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 41 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 18:34:45,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2023-12-02 18:34:45,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2023-12-02 18:34:45,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 40 states have (on average 1.5) internal successors, (60), 58 states have internal predecessors, (60), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 18:34:45,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 64 transitions. [2023-12-02 18:34:45,480 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 64 transitions. Word has length 15 [2023-12-02 18:34:45,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:34:45,481 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 64 transitions. [2023-12-02 18:34:45,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 18:34:45,481 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 64 transitions. [2023-12-02 18:34:45,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-02 18:34:45,482 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:34:45,482 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:34:45,486 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8353838-71d6-41e4-8cfc-50e2faac1b6a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-02 18:34:45,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8353838-71d6-41e4-8cfc-50e2faac1b6a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:34:45,682 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-12-02 18:34:45,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:34:45,683 INFO L85 PathProgramCache]: Analyzing trace with hash -98414675, now seen corresponding path program 1 times [2023-12-02 18:34:45,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:34:45,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268070713] [2023-12-02 18:34:45,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:34:45,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:34:45,689 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 18:34:45,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [23872022] [2023-12-02 18:34:45,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:34:45,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:34:45,690 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8353838-71d6-41e4-8cfc-50e2faac1b6a/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:34:45,691 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8353838-71d6-41e4-8cfc-50e2faac1b6a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:34:45,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8353838-71d6-41e4-8cfc-50e2faac1b6a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-02 18:34:45,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:34:45,725 INFO L262 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 18:34:45,726 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:34:45,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:34:45,748 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:34:45,748 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:34:45,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268070713] [2023-12-02 18:34:45,748 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 18:34:45,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [23872022] [2023-12-02 18:34:45,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [23872022] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:34:45,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:34:45,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 18:34:45,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178698023] [2023-12-02 18:34:45,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:34:45,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 18:34:45,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:34:45,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 18:34:45,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 18:34:45,750 INFO L87 Difference]: Start difference. First operand 62 states and 64 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 18:34:45,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:34:45,763 INFO L93 Difference]: Finished difference Result 63 states and 64 transitions. [2023-12-02 18:34:45,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 18:34:45,764 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2023-12-02 18:34:45,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:34:45,764 INFO L225 Difference]: With dead ends: 63 [2023-12-02 18:34:45,765 INFO L226 Difference]: Without dead ends: 62 [2023-12-02 18:34:45,765 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 18:34:45,765 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 0 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 18:34:45,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 82 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 18:34:45,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2023-12-02 18:34:45,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2023-12-02 18:34:45,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 40 states have (on average 1.475) internal successors, (59), 58 states have internal predecessors, (59), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 18:34:45,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 63 transitions. [2023-12-02 18:34:45,770 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 63 transitions. Word has length 16 [2023-12-02 18:34:45,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:34:45,771 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 63 transitions. [2023-12-02 18:34:45,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 18:34:45,771 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 63 transitions. [2023-12-02 18:34:45,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-02 18:34:45,771 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:34:45,772 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:34:45,776 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8353838-71d6-41e4-8cfc-50e2faac1b6a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-02 18:34:45,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8353838-71d6-41e4-8cfc-50e2faac1b6a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:34:45,972 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-12-02 18:34:45,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:34:45,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1591155777, now seen corresponding path program 1 times [2023-12-02 18:34:45,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:34:45,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34675110] [2023-12-02 18:34:45,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:34:45,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:34:45,982 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 18:34:45,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1792552313] [2023-12-02 18:34:45,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:34:45,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:34:45,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8353838-71d6-41e4-8cfc-50e2faac1b6a/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:34:45,983 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8353838-71d6-41e4-8cfc-50e2faac1b6a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:34:45,984 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8353838-71d6-41e4-8cfc-50e2faac1b6a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-02 18:34:46,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:34:46,020 INFO L262 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 18:34:46,022 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:34:46,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:34:46,110 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:34:46,111 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:34:46,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34675110] [2023-12-02 18:34:46,111 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 18:34:46,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1792552313] [2023-12-02 18:34:46,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1792552313] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:34:46,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:34:46,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 18:34:46,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383382393] [2023-12-02 18:34:46,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:34:46,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 18:34:46,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:34:46,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 18:34:46,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 18:34:46,113 INFO L87 Difference]: Start difference. First operand 62 states and 63 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 18:34:46,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:34:46,182 INFO L93 Difference]: Finished difference Result 62 states and 63 transitions. [2023-12-02 18:34:46,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 18:34:46,183 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2023-12-02 18:34:46,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:34:46,183 INFO L225 Difference]: With dead ends: 62 [2023-12-02 18:34:46,184 INFO L226 Difference]: Without dead ends: 58 [2023-12-02 18:34:46,184 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 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 18:34:46,185 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 37 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 18:34:46,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 22 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 18:34:46,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2023-12-02 18:34:46,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2023-12-02 18:34:46,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 40 states have (on average 1.375) internal successors, (55), 54 states have internal predecessors, (55), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 18:34:46,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 59 transitions. [2023-12-02 18:34:46,192 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 59 transitions. Word has length 19 [2023-12-02 18:34:46,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:34:46,192 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 59 transitions. [2023-12-02 18:34:46,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 18:34:46,192 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 59 transitions. [2023-12-02 18:34:46,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-12-02 18:34:46,193 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:34:46,193 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:34:46,197 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8353838-71d6-41e4-8cfc-50e2faac1b6a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-02 18:34:46,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8353838-71d6-41e4-8cfc-50e2faac1b6a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-02 18:34:46,398 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-12-02 18:34:46,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:34:46,398 INFO L85 PathProgramCache]: Analyzing trace with hash 2081188913, now seen corresponding path program 1 times [2023-12-02 18:34:46,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:34:46,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293594836] [2023-12-02 18:34:46,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:34:46,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:34:46,407 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 18:34:46,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1818348954] [2023-12-02 18:34:46,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:34:46,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:34:46,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8353838-71d6-41e4-8cfc-50e2faac1b6a/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:34:46,409 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8353838-71d6-41e4-8cfc-50e2faac1b6a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:34:46,413 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8353838-71d6-41e4-8cfc-50e2faac1b6a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-02 18:34:46,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:34:46,453 INFO L262 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 18:34:46,455 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:34:46,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:34:46,536 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:34:46,536 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:34:46,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293594836] [2023-12-02 18:34:46,536 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 18:34:46,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1818348954] [2023-12-02 18:34:46,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1818348954] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:34:46,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:34:46,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 18:34:46,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866690880] [2023-12-02 18:34:46,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:34:46,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 18:34:46,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:34:46,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 18:34:46,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 18:34:46,538 INFO L87 Difference]: Start difference. First operand 58 states and 59 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 18:34:46,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:34:46,604 INFO L93 Difference]: Finished difference Result 61 states and 62 transitions. [2023-12-02 18:34:46,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 18:34:46,605 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2023-12-02 18:34:46,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:34:46,605 INFO L225 Difference]: With dead ends: 61 [2023-12-02 18:34:46,605 INFO L226 Difference]: Without dead ends: 60 [2023-12-02 18:34:46,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 17 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 18:34:46,606 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 0 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 18:34:46,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 37 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 18:34:46,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2023-12-02 18:34:46,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2023-12-02 18:34:46,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 42 states have (on average 1.3571428571428572) internal successors, (57), 56 states have internal predecessors, (57), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 18:34:46,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 61 transitions. [2023-12-02 18:34:46,613 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 61 transitions. Word has length 20 [2023-12-02 18:34:46,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:34:46,613 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 61 transitions. [2023-12-02 18:34:46,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 18:34:46,613 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 61 transitions. [2023-12-02 18:34:46,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-02 18:34:46,614 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:34:46,614 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:34:46,620 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8353838-71d6-41e4-8cfc-50e2faac1b6a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-02 18:34:46,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8353838-71d6-41e4-8cfc-50e2faac1b6a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-12-02 18:34:46,818 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-12-02 18:34:46,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:34:46,818 INFO L85 PathProgramCache]: Analyzing trace with hash -1448930143, now seen corresponding path program 1 times [2023-12-02 18:34:46,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:34:46,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765524920] [2023-12-02 18:34:46,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:34:46,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:34:46,828 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 18:34:46,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1566263675] [2023-12-02 18:34:46,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:34:46,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:34:46,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8353838-71d6-41e4-8cfc-50e2faac1b6a/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:34:46,829 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8353838-71d6-41e4-8cfc-50e2faac1b6a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:34:46,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8353838-71d6-41e4-8cfc-50e2faac1b6a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-02 18:34:46,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:34:46,865 INFO L262 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 18:34:46,867 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:34:46,898 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:34:46,898 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:34:46,972 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:34:46,972 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:34:46,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765524920] [2023-12-02 18:34:46,973 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 18:34:46,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1566263675] [2023-12-02 18:34:46,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1566263675] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:34:46,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1876983231] [2023-12-02 18:34:46,992 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2023-12-02 18:34:46,992 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 18:34:46,995 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 18:34:46,999 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 18:34:46,999 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 18:34:48,506 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 35 for LOIs [2023-12-02 18:34:48,523 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 18:34:49,593 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1783#(and (<= 1 |#StackHeapBarrier|) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 9223372036854775807) (<= |ULTIMATE.start_main_~k~0#1| 100) (<= 1 |ULTIMATE.start_main_~c~0#1|) (<= |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~x~0#1|) (<= 9223372036854775808 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (<= 1 |ULTIMATE.start_main_~k~0#1|))' at error location [2023-12-02 18:34:49,594 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 18:34:49,594 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 18:34:49,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-12-02 18:34:49,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060344093] [2023-12-02 18:34:49,594 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 18:34:49,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 18:34:49,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:34:49,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 18:34:49,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2023-12-02 18:34:49,596 INFO L87 Difference]: Start difference. First operand 60 states and 61 transitions. Second operand has 6 states, 5 states have (on average 8.2) internal successors, (41), 6 states have internal predecessors, (41), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 18:34:49,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:34:49,756 INFO L93 Difference]: Finished difference Result 138 states and 147 transitions. [2023-12-02 18:34:49,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 18:34:49,757 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.2) internal successors, (41), 6 states have internal predecessors, (41), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 23 [2023-12-02 18:34:49,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:34:49,758 INFO L225 Difference]: With dead ends: 138 [2023-12-02 18:34:49,758 INFO L226 Difference]: Without dead ends: 135 [2023-12-02 18:34:49,759 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 45 SyntacticMatches, 5 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2023-12-02 18:34:49,759 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 114 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 18:34:49,760 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 66 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 18:34:49,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2023-12-02 18:34:49,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 95. [2023-12-02 18:34:49,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 77 states have (on average 1.3766233766233766) internal successors, (106), 89 states have internal predecessors, (106), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 18:34:49,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 114 transitions. [2023-12-02 18:34:49,768 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 114 transitions. Word has length 23 [2023-12-02 18:34:49,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:34:49,769 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 114 transitions. [2023-12-02 18:34:49,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.2) internal successors, (41), 6 states have internal predecessors, (41), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 18:34:49,769 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 114 transitions. [2023-12-02 18:34:49,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-12-02 18:34:49,770 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:34:49,770 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:34:49,775 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8353838-71d6-41e4-8cfc-50e2faac1b6a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-12-02 18:34:49,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8353838-71d6-41e4-8cfc-50e2faac1b6a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-02 18:34:49,974 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-12-02 18:34:49,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:34:49,974 INFO L85 PathProgramCache]: Analyzing trace with hash -852461789, now seen corresponding path program 1 times [2023-12-02 18:34:49,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:34:49,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197270002] [2023-12-02 18:34:49,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:34:49,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:34:49,982 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 18:34:49,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [833800397] [2023-12-02 18:34:49,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:34:49,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:34:49,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8353838-71d6-41e4-8cfc-50e2faac1b6a/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:34:49,984 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8353838-71d6-41e4-8cfc-50e2faac1b6a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:34:49,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8353838-71d6-41e4-8cfc-50e2faac1b6a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-02 18:34:50,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:34:50,037 INFO L262 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 18:34:50,039 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:34:50,113 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:34:50,113 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:34:50,172 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:34:50,172 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:34:50,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197270002] [2023-12-02 18:34:50,172 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 18:34:50,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [833800397] [2023-12-02 18:34:50,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [833800397] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:34:50,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1591277281] [2023-12-02 18:34:50,175 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2023-12-02 18:34:50,175 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 18:34:50,175 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 18:34:50,175 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 18:34:50,175 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 18:34:50,975 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 35 for LOIs [2023-12-02 18:34:50,984 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 18:34:51,771 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2203#(and (<= 0 |ULTIMATE.start_main_~k~0#1|) (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~x~0#1| 9223372036854775807) (<= |ULTIMATE.start_main_~k~0#1| 100) (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= 4611686018427387904 |ULTIMATE.start_main_~x~0#1|) (<= 0 |ULTIMATE.start_main_~c~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 9223372036854775807))' at error location [2023-12-02 18:34:51,771 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 18:34:51,771 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 18:34:51,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-12-02 18:34:51,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801290839] [2023-12-02 18:34:51,771 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 18:34:51,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 18:34:51,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:34:51,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 18:34:51,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=339, Unknown=0, NotChecked=0, Total=420 [2023-12-02 18:34:51,773 INFO L87 Difference]: Start difference. First operand 95 states and 114 transitions. Second operand has 8 states, 7 states have (on average 6.428571428571429) internal successors, (45), 8 states have internal predecessors, (45), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 18:34:51,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:34:51,893 INFO L93 Difference]: Finished difference Result 110 states and 126 transitions. [2023-12-02 18:34:51,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 18:34:51,893 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.428571428571429) internal successors, (45), 8 states have internal predecessors, (45), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 25 [2023-12-02 18:34:51,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:34:51,894 INFO L225 Difference]: With dead ends: 110 [2023-12-02 18:34:51,894 INFO L226 Difference]: Without dead ends: 103 [2023-12-02 18:34:51,895 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 49 SyntacticMatches, 5 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=97, Invalid=409, Unknown=0, NotChecked=0, Total=506 [2023-12-02 18:34:51,896 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 99 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 18:34:51,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 40 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 18:34:51,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2023-12-02 18:34:51,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 90. [2023-12-02 18:34:51,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 77 states have (on average 1.2207792207792207) internal successors, (94), 84 states have internal predecessors, (94), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 18:34:51,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 102 transitions. [2023-12-02 18:34:51,902 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 102 transitions. Word has length 25 [2023-12-02 18:34:51,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:34:51,903 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 102 transitions. [2023-12-02 18:34:51,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.428571428571429) internal successors, (45), 8 states have internal predecessors, (45), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 18:34:51,903 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 102 transitions. [2023-12-02 18:34:51,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-12-02 18:34:51,904 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:34:51,904 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:34:51,909 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8353838-71d6-41e4-8cfc-50e2faac1b6a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-12-02 18:34:52,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8353838-71d6-41e4-8cfc-50e2faac1b6a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-02 18:34:52,106 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-12-02 18:34:52,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:34:52,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1122976165, now seen corresponding path program 1 times [2023-12-02 18:34:52,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:34:52,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798697265] [2023-12-02 18:34:52,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:34:52,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:34:52,112 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 18:34:52,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1927979477] [2023-12-02 18:34:52,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:34:52,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:34:52,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8353838-71d6-41e4-8cfc-50e2faac1b6a/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:34:52,114 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8353838-71d6-41e4-8cfc-50e2faac1b6a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:34:52,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8353838-71d6-41e4-8cfc-50e2faac1b6a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-02 18:34:52,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:34:52,153 INFO L262 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 18:34:52,154 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:34:52,251 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:34:52,251 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:34:52,251 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:34:52,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798697265] [2023-12-02 18:34:52,251 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 18:34:52,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1927979477] [2023-12-02 18:34:52,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1927979477] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:34:52,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:34:52,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 18:34:52,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299204109] [2023-12-02 18:34:52,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:34:52,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 18:34:52,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:34:52,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 18:34:52,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-02 18:34:52,253 INFO L87 Difference]: Start difference. First operand 90 states and 102 transitions. Second operand has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 18:34:52,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:34:52,312 INFO L93 Difference]: Finished difference Result 90 states and 102 transitions. [2023-12-02 18:34:52,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 18:34:52,312 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2023-12-02 18:34:52,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:34:52,313 INFO L225 Difference]: With dead ends: 90 [2023-12-02 18:34:52,313 INFO L226 Difference]: Without dead ends: 78 [2023-12-02 18:34:52,314 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-02 18:34:52,314 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 37 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 18:34:52,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 27 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 18:34:52,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2023-12-02 18:34:52,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2023-12-02 18:34:52,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 69 states have (on average 1.1014492753623188) internal successors, (76), 72 states have internal predecessors, (76), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 18:34:52,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 84 transitions. [2023-12-02 18:34:52,321 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 84 transitions. Word has length 27 [2023-12-02 18:34:52,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:34:52,321 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 84 transitions. [2023-12-02 18:34:52,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 18:34:52,321 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 84 transitions. [2023-12-02 18:34:52,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-02 18:34:52,322 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:34:52,322 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:34:52,327 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8353838-71d6-41e4-8cfc-50e2faac1b6a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-12-02 18:34:52,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8353838-71d6-41e4-8cfc-50e2faac1b6a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-02 18:34:52,525 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-12-02 18:34:52,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:34:52,526 INFO L85 PathProgramCache]: Analyzing trace with hash 146913442, now seen corresponding path program 1 times [2023-12-02 18:34:52,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:34:52,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497543132] [2023-12-02 18:34:52,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:34:52,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:34:52,532 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 18:34:52,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [943827084] [2023-12-02 18:34:52,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:34:52,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:34:52,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8353838-71d6-41e4-8cfc-50e2faac1b6a/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:34:52,533 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8353838-71d6-41e4-8cfc-50e2faac1b6a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:34:52,534 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8353838-71d6-41e4-8cfc-50e2faac1b6a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-02 18:34:52,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:34:52,571 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 18:34:52,573 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:34:52,608 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 18:34:52,608 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:34:52,647 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 18:34:52,648 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:34:52,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497543132] [2023-12-02 18:34:52,648 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 18:34:52,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [943827084] [2023-12-02 18:34:52,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [943827084] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:34:52,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1486077032] [2023-12-02 18:34:52,651 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2023-12-02 18:34:52,651 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 18:34:52,651 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 18:34:52,651 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 18:34:52,651 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 18:34:53,386 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 35 for LOIs [2023-12-02 18:34:53,394 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 18:34:54,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1486077032] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:34:54,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 18:34:54,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [3, 3] total 17 [2023-12-02 18:34:54,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130348300] [2023-12-02 18:34:54,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:34:54,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 18:34:54,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:34:54,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 18:34:54,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2023-12-02 18:34:54,101 INFO L87 Difference]: Start difference. First operand 78 states and 84 transitions. Second operand has 14 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 11 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 18:34:54,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:34:54,659 INFO L93 Difference]: Finished difference Result 78 states and 84 transitions. [2023-12-02 18:34:54,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 18:34:54,659 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 11 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 35 [2023-12-02 18:34:54,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:34:54,660 INFO L225 Difference]: With dead ends: 78 [2023-12-02 18:34:54,660 INFO L226 Difference]: Without dead ends: 76 [2023-12-02 18:34:54,661 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 79 SyntacticMatches, 8 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=176, Invalid=526, Unknown=0, NotChecked=0, Total=702 [2023-12-02 18:34:54,661 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 71 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 18:34:54,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 12 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 18:34:54,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2023-12-02 18:34:54,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2023-12-02 18:34:54,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 69 states have (on average 1.0289855072463767) internal successors, (71), 70 states have internal predecessors, (71), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 18:34:54,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 79 transitions. [2023-12-02 18:34:54,669 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 79 transitions. Word has length 35 [2023-12-02 18:34:54,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:34:54,669 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 79 transitions. [2023-12-02 18:34:54,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 11 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 18:34:54,670 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 79 transitions. [2023-12-02 18:34:54,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-02 18:34:54,672 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:34:54,672 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1] [2023-12-02 18:34:54,677 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8353838-71d6-41e4-8cfc-50e2faac1b6a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-02 18:34:54,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8353838-71d6-41e4-8cfc-50e2faac1b6a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-02 18:34:54,877 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-12-02 18:34:54,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:34:54,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1511549251, now seen corresponding path program 2 times [2023-12-02 18:34:54,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:34:54,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729666296] [2023-12-02 18:34:54,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:34:54,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:34:54,886 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 18:34:54,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [292341348] [2023-12-02 18:34:54,886 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 18:34:54,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:34:54,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8353838-71d6-41e4-8cfc-50e2faac1b6a/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:34:54,888 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8353838-71d6-41e4-8cfc-50e2faac1b6a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:34:54,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8353838-71d6-41e4-8cfc-50e2faac1b6a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-02 18:34:55,233 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-02 18:34:55,233 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 18:34:55,234 INFO L262 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-02 18:34:55,236 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:35:24,453 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 43 proven. 2 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-12-02 18:35:24,454 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:35:30,725 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-12-02 18:35:30,725 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:35:30,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729666296] [2023-12-02 18:35:30,725 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 18:35:30,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [292341348] [2023-12-02 18:35:30,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [292341348] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-02 18:35:30,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 18:35:30,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2023-12-02 18:35:30,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712786616] [2023-12-02 18:35:30,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:35:30,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 18:35:30,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:35:30,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 18:35:30,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=109, Unknown=7, NotChecked=0, Total=156 [2023-12-02 18:35:30,727 INFO L87 Difference]: Start difference. First operand 76 states and 79 transitions. Second operand has 7 states, 5 states have (on average 6.2) internal successors, (31), 7 states have internal predecessors, (31), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 18:35:34,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:35:34,970 INFO L93 Difference]: Finished difference Result 76 states and 79 transitions. [2023-12-02 18:35:34,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-02 18:35:34,970 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 6.2) internal successors, (31), 7 states have internal predecessors, (31), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 63 [2023-12-02 18:35:34,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:35:34,971 INFO L225 Difference]: With dead ends: 76 [2023-12-02 18:35:34,971 INFO L226 Difference]: Without dead ends: 75 [2023-12-02 18:35:34,972 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 29.4s TimeCoverageRelationStatistics Valid=69, Invalid=195, Unknown=8, NotChecked=0, Total=272 [2023-12-02 18:35:34,973 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 65 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 18:35:34,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 18 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 18:35:34,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2023-12-02 18:35:34,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2023-12-02 18:35:34,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 69 states have (on average 1.0144927536231885) internal successors, (70), 69 states have internal predecessors, (70), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 18:35:34,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 78 transitions. [2023-12-02 18:35:34,981 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 78 transitions. Word has length 63 [2023-12-02 18:35:34,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:35:34,981 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 78 transitions. [2023-12-02 18:35:34,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 6.2) internal successors, (31), 7 states have internal predecessors, (31), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 18:35:34,982 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 78 transitions. [2023-12-02 18:35:34,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-02 18:35:34,982 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:35:34,983 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1] [2023-12-02 18:35:34,987 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8353838-71d6-41e4-8cfc-50e2faac1b6a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-02 18:35:35,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8353838-71d6-41e4-8cfc-50e2faac1b6a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-12-02 18:35:35,183 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-12-02 18:35:35,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:35:35,183 INFO L85 PathProgramCache]: Analyzing trace with hash 383070188, now seen corresponding path program 2 times [2023-12-02 18:35:35,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:35:35,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2986858] [2023-12-02 18:35:35,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:35:35,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:35:35,193 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 18:35:35,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2009761211] [2023-12-02 18:35:35,193 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 18:35:35,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:35:35,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8353838-71d6-41e4-8cfc-50e2faac1b6a/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:35:35,194 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8353838-71d6-41e4-8cfc-50e2faac1b6a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:35:35,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8353838-71d6-41e4-8cfc-50e2faac1b6a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-02 18:35:36,051 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-12-02 18:35:36,051 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 18:35:36,053 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-02 18:35:36,055 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:35:36,242 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 1 proven. 116 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-02 18:35:36,242 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:35:37,009 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 1 proven. 116 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-02 18:35:37,010 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:35:37,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2986858] [2023-12-02 18:35:37,010 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 18:35:37,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2009761211] [2023-12-02 18:35:37,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2009761211] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:35:37,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [441731048] [2023-12-02 18:35:37,012 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2023-12-02 18:35:37,012 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 18:35:37,013 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 18:35:37,013 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 18:35:37,013 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 18:35:37,650 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 35 for LOIs [2023-12-02 18:35:37,658 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 18:35:39,428 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4182#(and (<= 1 |#StackHeapBarrier|) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 9223372036854775807) (<= |ULTIMATE.start_main_~k~0#1| 100) (<= 1 |ULTIMATE.start_main_~c~0#1|) (<= |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~x~0#1|) (<= 9223372036854775808 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (<= 1 |ULTIMATE.start_main_~k~0#1|))' at error location [2023-12-02 18:35:39,428 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 18:35:39,428 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 18:35:39,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 17 [2023-12-02 18:35:39,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343331700] [2023-12-02 18:35:39,429 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 18:35:39,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-02 18:35:39,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:35:39,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-02 18:35:39,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=770, Unknown=0, NotChecked=0, Total=930 [2023-12-02 18:35:39,431 INFO L87 Difference]: Start difference. First operand 75 states and 78 transitions. Second operand has 18 states, 16 states have (on average 8.625) internal successors, (138), 18 states have internal predecessors, (138), 8 states have call successors, (8), 1 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 18:35:40,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:35:40,197 INFO L93 Difference]: Finished difference Result 162 states and 174 transitions. [2023-12-02 18:35:40,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-02 18:35:40,198 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 8.625) internal successors, (138), 18 states have internal predecessors, (138), 8 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 80 [2023-12-02 18:35:40,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:35:40,199 INFO L225 Difference]: With dead ends: 162 [2023-12-02 18:35:40,199 INFO L226 Difference]: Without dead ends: 161 [2023-12-02 18:35:40,200 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 192 SyntacticMatches, 17 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=294, Invalid=1188, Unknown=0, NotChecked=0, Total=1482 [2023-12-02 18:35:40,201 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 109 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 588 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 18:35:40,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 270 Invalid, 607 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 588 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 18:35:40,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2023-12-02 18:35:40,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 160. [2023-12-02 18:35:40,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 149 states have (on average 1.0067114093959733) internal successors, (150), 149 states have internal predecessors, (150), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-02 18:35:40,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 168 transitions. [2023-12-02 18:35:40,211 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 168 transitions. Word has length 80 [2023-12-02 18:35:40,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:35:40,212 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 168 transitions. [2023-12-02 18:35:40,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 8.625) internal successors, (138), 18 states have internal predecessors, (138), 8 states have call successors, (8), 1 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 18:35:40,212 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 168 transitions. [2023-12-02 18:35:40,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-12-02 18:35:40,215 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:35:40,215 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1] [2023-12-02 18:35:40,220 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8353838-71d6-41e4-8cfc-50e2faac1b6a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-12-02 18:35:40,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8353838-71d6-41e4-8cfc-50e2faac1b6a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:35:40,416 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-12-02 18:35:40,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:35:40,416 INFO L85 PathProgramCache]: Analyzing trace with hash -975737567, now seen corresponding path program 3 times [2023-12-02 18:35:40,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:35:40,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616863505] [2023-12-02 18:35:40,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:35:40,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:35:40,427 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 18:35:40,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [394484041] [2023-12-02 18:35:40,427 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-02 18:35:40,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:35:40,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8353838-71d6-41e4-8cfc-50e2faac1b6a/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:35:40,428 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8353838-71d6-41e4-8cfc-50e2faac1b6a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:35:40,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8353838-71d6-41e4-8cfc-50e2faac1b6a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-02 18:35:40,508 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-02 18:35:40,509 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 18:35:40,510 INFO L262 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-02 18:35:40,518 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:35:40,704 INFO L134 CoverageAnalysis]: Checked inductivity of 711 backedges. 0 proven. 639 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-12-02 18:35:40,704 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:35:41,192 INFO L134 CoverageAnalysis]: Checked inductivity of 711 backedges. 0 proven. 639 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-12-02 18:35:41,192 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:35:41,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616863505] [2023-12-02 18:35:41,193 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 18:35:41,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [394484041] [2023-12-02 18:35:41,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [394484041] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:35:41,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [117054340] [2023-12-02 18:35:41,195 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2023-12-02 18:35:41,195 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 18:35:41,196 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 18:35:41,196 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 18:35:41,196 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 18:35:41,781 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 35 for LOIs [2023-12-02 18:35:41,790 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 18:35:44,706 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5640#(and (<= 1 |#StackHeapBarrier|) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 9223372036854775807) (<= |ULTIMATE.start_main_~k~0#1| 100) (<= 1 |ULTIMATE.start_main_~c~0#1|) (<= |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~x~0#1|) (<= 9223372036854775808 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (<= 1 |ULTIMATE.start_main_~k~0#1|))' at error location [2023-12-02 18:35:44,706 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 18:35:44,706 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 18:35:44,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2023-12-02 18:35:44,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227694578] [2023-12-02 18:35:44,706 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 18:35:44,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-02 18:35:44,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:35:44,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-02 18:35:44,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=992, Unknown=0, NotChecked=0, Total=1190 [2023-12-02 18:35:44,709 INFO L87 Difference]: Start difference. First operand 160 states and 168 transitions. Second operand has 22 states, 21 states have (on average 14.142857142857142) internal successors, (297), 22 states have internal predecessors, (297), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-02 18:35:45,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:35:45,827 INFO L93 Difference]: Finished difference Result 348 states and 377 transitions. [2023-12-02 18:35:45,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-02 18:35:45,827 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 14.142857142857142) internal successors, (297), 22 states have internal predecessors, (297), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Word has length 175 [2023-12-02 18:35:45,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:35:45,829 INFO L225 Difference]: With dead ends: 348 [2023-12-02 18:35:45,829 INFO L226 Difference]: Without dead ends: 347 [2023-12-02 18:35:45,830 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 532 GetRequests, 453 SyntacticMatches, 37 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 978 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=396, Invalid=1496, Unknown=0, NotChecked=0, Total=1892 [2023-12-02 18:35:45,831 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 134 mSDsluCounter, 705 mSDsCounter, 0 mSdLazyCounter, 1207 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 786 SdHoareTripleChecker+Invalid, 1219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-02 18:35:45,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 786 Invalid, 1219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1207 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-02 18:35:45,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2023-12-02 18:35:45,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 347. [2023-12-02 18:35:45,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 325 states have (on average 1.003076923076923) internal successors, (326), 325 states have internal predecessors, (326), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-02 18:35:45,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 366 transitions. [2023-12-02 18:35:45,847 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 366 transitions. Word has length 175 [2023-12-02 18:35:45,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:35:45,847 INFO L495 AbstractCegarLoop]: Abstraction has 347 states and 366 transitions. [2023-12-02 18:35:45,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 14.142857142857142) internal successors, (297), 22 states have internal predecessors, (297), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-02 18:35:45,848 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 366 transitions. [2023-12-02 18:35:45,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2023-12-02 18:35:45,852 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:35:45,852 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 1, 1] [2023-12-02 18:35:45,856 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8353838-71d6-41e4-8cfc-50e2faac1b6a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-12-02 18:35:46,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8353838-71d6-41e4-8cfc-50e2faac1b6a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:35:46,053 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-12-02 18:35:46,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:35:46,053 INFO L85 PathProgramCache]: Analyzing trace with hash 404954860, now seen corresponding path program 4 times [2023-12-02 18:35:46,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:35:46,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142540208] [2023-12-02 18:35:46,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:35:46,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:35:46,072 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 18:35:46,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1183033295] [2023-12-02 18:35:46,073 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-02 18:35:46,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:35:46,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8353838-71d6-41e4-8cfc-50e2faac1b6a/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:35:46,073 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8353838-71d6-41e4-8cfc-50e2faac1b6a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:35:46,074 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8353838-71d6-41e4-8cfc-50e2faac1b6a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-02 18:35:46,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:35:46,214 INFO L262 TraceCheckSpWp]: Trace formula consists of 633 conjuncts, 43 conjunts are in the unsatisfiable core [2023-12-02 18:35:46,219 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:35:46,756 INFO L134 CoverageAnalysis]: Checked inductivity of 3670 backedges. 0 proven. 3290 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2023-12-02 18:35:46,756 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:35:48,212 INFO L134 CoverageAnalysis]: Checked inductivity of 3670 backedges. 0 proven. 3290 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2023-12-02 18:35:48,212 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:35:48,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142540208] [2023-12-02 18:35:48,212 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 18:35:48,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1183033295] [2023-12-02 18:35:48,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1183033295] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:35:48,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1629126210] [2023-12-02 18:35:48,214 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2023-12-02 18:35:48,214 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 18:35:48,214 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 18:35:48,214 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 18:35:48,215 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 18:35:48,787 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 35 for LOIs [2023-12-02 18:35:48,796 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 18:35:56,893 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8792#(and (<= 1 |#StackHeapBarrier|) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 9223372036854775807) (<= |ULTIMATE.start_main_~k~0#1| 100) (<= 1 |ULTIMATE.start_main_~c~0#1|) (<= |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~x~0#1|) (<= 9223372036854775808 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (<= 1 |ULTIMATE.start_main_~k~0#1|))' at error location [2023-12-02 18:35:56,893 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 18:35:56,893 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 18:35:56,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 43 [2023-12-02 18:35:56,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424322627] [2023-12-02 18:35:56,894 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 18:35:56,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-12-02 18:35:56,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:35:56,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-12-02 18:35:56,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=583, Invalid=2609, Unknown=0, NotChecked=0, Total=3192 [2023-12-02 18:35:56,898 INFO L87 Difference]: Start difference. First operand 347 states and 366 transitions. Second operand has 44 states, 43 states have (on average 15.093023255813954) internal successors, (649), 44 states have internal predecessors, (649), 40 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-02 18:36:01,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:36:01,205 INFO L93 Difference]: Finished difference Result 722 states and 784 transitions. [2023-12-02 18:36:01,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-12-02 18:36:01,206 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 43 states have (on average 15.093023255813954) internal successors, (649), 44 states have internal predecessors, (649), 40 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) Word has length 384 [2023-12-02 18:36:01,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:36:01,211 INFO L225 Difference]: With dead ends: 722 [2023-12-02 18:36:01,211 INFO L226 Difference]: Without dead ends: 721 [2023-12-02 18:36:01,214 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1170 GetRequests, 1014 SyntacticMatches, 81 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3112 ImplicationChecksByTransitivity, 11.2s TimeCoverageRelationStatistics Valid=1463, Invalid=4389, Unknown=0, NotChecked=0, Total=5852 [2023-12-02 18:36:01,215 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 244 mSDsluCounter, 3124 mSDsCounter, 0 mSdLazyCounter, 5081 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 3293 SdHoareTripleChecker+Invalid, 5103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 5081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-02 18:36:01,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 3293 Invalid, 5103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 5081 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-02 18:36:01,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 721 states. [2023-12-02 18:36:01,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 721 to 721. [2023-12-02 18:36:01,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 721 states, 677 states have (on average 1.0014771048744462) internal successors, (678), 677 states have internal predecessors, (678), 42 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-02 18:36:01,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 762 transitions. [2023-12-02 18:36:01,260 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 762 transitions. Word has length 384 [2023-12-02 18:36:01,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:36:01,261 INFO L495 AbstractCegarLoop]: Abstraction has 721 states and 762 transitions. [2023-12-02 18:36:01,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 43 states have (on average 15.093023255813954) internal successors, (649), 44 states have internal predecessors, (649), 40 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-02 18:36:01,262 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 762 transitions. [2023-12-02 18:36:01,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 803 [2023-12-02 18:36:01,287 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:36:01,287 INFO L195 NwaCegarLoop]: trace histogram [43, 43, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 1, 1] [2023-12-02 18:36:01,293 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8353838-71d6-41e4-8cfc-50e2faac1b6a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-12-02 18:36:01,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8353838-71d6-41e4-8cfc-50e2faac1b6a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-02 18:36:01,488 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-12-02 18:36:01,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:36:01,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1343958132, now seen corresponding path program 5 times [2023-12-02 18:36:01,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:36:01,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725160436] [2023-12-02 18:36:01,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:36:01,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:36:01,519 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 18:36:01,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1519933096] [2023-12-02 18:36:01,520 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 18:36:01,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:36:01,520 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8353838-71d6-41e4-8cfc-50e2faac1b6a/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:36:01,521 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8353838-71d6-41e4-8cfc-50e2faac1b6a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:36:01,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8353838-71d6-41e4-8cfc-50e2faac1b6a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-02 18:37:26,837 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 43 check-sat command(s) [2023-12-02 18:37:26,837 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 18:37:26,860 INFO L262 TraceCheckSpWp]: Trace formula consists of 1293 conjuncts, 110 conjunts are in the unsatisfiable core [2023-12-02 18:37:26,871 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:44:48,346 INFO L134 CoverageAnalysis]: Checked inductivity of 16485 backedges. 32 proven. 14693 refuted. 79 times theorem prover too weak. 1681 trivial. 0 not checked. [2023-12-02 18:44:48,346 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:45:02,758 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:45:02,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725160436] [2023-12-02 18:45:02,758 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 18:45:02,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1519933096] [2023-12-02 18:45:02,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1519933096] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:45:02,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1896365813] [2023-12-02 18:45:02,761 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2023-12-02 18:45:02,761 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 18:45:02,761 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 18:45:02,762 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 18:45:02,762 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 18:45:03,433 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 35 for LOIs [2023-12-02 18:45:03,444 INFO L180 IcfgInterpreter]: Interpretation finished