./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound20.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/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_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound20.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/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_cd52d4dc-27ca-47a6-a545-58035b801ce4/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 39b854852f8258ff198098e27d83a5b0e296df48090ebea0d59d234417af0752 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 18:14:25,679 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 18:14:25,738 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-12-02 18:14:25,742 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 18:14:25,743 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 18:14:25,764 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 18:14:25,764 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 18:14:25,765 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 18:14:25,765 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 18:14:25,766 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 18:14:25,766 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 18:14:25,767 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 18:14:25,768 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 18:14:25,768 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 18:14:25,769 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 18:14:25,769 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 18:14:25,770 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 18:14:25,770 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 18:14:25,770 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 18:14:25,771 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 18:14:25,771 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 18:14:25,773 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 18:14:25,774 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 18:14:25,775 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 18:14:25,775 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 18:14:25,775 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 18:14:25,776 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 18:14:25,776 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 18:14:25,776 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 18:14:25,776 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 18:14:25,777 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 18:14:25,777 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-12-02 18:14:25,777 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 18:14:25,778 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 18:14:25,778 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 18:14:25,778 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 18:14:25,778 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 18:14:25,778 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 18:14:25,779 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 18:14:25,779 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 18:14:25,779 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 18:14:25,779 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 18:14:25,779 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 18:14:25,780 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 18:14:25,780 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 18:14:25,780 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 18:14:25,780 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 18:14:25,780 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 18:14:25,780 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 18:14:25,781 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_cd52d4dc-27ca-47a6-a545-58035b801ce4/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 39b854852f8258ff198098e27d83a5b0e296df48090ebea0d59d234417af0752 [2023-12-02 18:14:25,970 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 18:14:25,989 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 18:14:25,992 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 18:14:25,993 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 18:14:25,993 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 18:14:25,994 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound20.c [2023-12-02 18:14:28,701 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 18:14:28,858 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 18:14:28,859 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound20.c [2023-12-02 18:14:28,866 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/data/c2954aecb/2d57a2dbf71540dca857b934e5fa4ee0/FLAGc4aeeb26d [2023-12-02 18:14:28,880 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/data/c2954aecb/2d57a2dbf71540dca857b934e5fa4ee0 [2023-12-02 18:14:28,883 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 18:14:28,884 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 18:14:28,886 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 18:14:28,886 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 18:14:28,891 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 18:14:28,891 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:14:28" (1/1) ... [2023-12-02 18:14:28,892 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c1af211 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:14:28, skipping insertion in model container [2023-12-02 18:14:28,893 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:14:28" (1/1) ... [2023-12-02 18:14:28,916 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 18:14:29,072 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 18:14:29,082 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 18:14:29,105 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 18:14:29,120 INFO L206 MainTranslator]: Completed translation [2023-12-02 18:14:29,121 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:14:29 WrapperNode [2023-12-02 18:14:29,121 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 18:14:29,122 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 18:14:29,122 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 18:14:29,123 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 18:14:29,130 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:14:29" (1/1) ... [2023-12-02 18:14:29,137 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:14:29" (1/1) ... [2023-12-02 18:14:29,162 INFO L138 Inliner]: procedures = 14, calls = 17, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 139 [2023-12-02 18:14:29,163 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 18:14:29,163 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 18:14:29,164 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 18:14:29,164 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 18:14:29,173 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:14:29" (1/1) ... [2023-12-02 18:14:29,173 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:14:29" (1/1) ... [2023-12-02 18:14:29,175 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:14:29" (1/1) ... [2023-12-02 18:14:29,176 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:14:29" (1/1) ... [2023-12-02 18:14:29,180 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:14:29" (1/1) ... [2023-12-02 18:14:29,184 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:14:29" (1/1) ... [2023-12-02 18:14:29,185 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:14:29" (1/1) ... [2023-12-02 18:14:29,187 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:14:29" (1/1) ... [2023-12-02 18:14:29,189 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 18:14:29,190 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 18:14:29,190 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 18:14:29,190 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 18:14:29,191 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:14:29" (1/1) ... [2023-12-02 18:14:29,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 18:14:29,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:14:29,220 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 18:14:29,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 18:14:29,254 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 18:14:29,254 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-02 18:14:29,254 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-02 18:14:29,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 18:14:29,255 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 18:14:29,255 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 18:14:29,255 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-02 18:14:29,255 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-02 18:14:29,315 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 18:14:29,317 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 18:14:29,646 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 18:14:29,680 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 18:14:29,680 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-12-02 18:14:29,682 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:14:29 BoogieIcfgContainer [2023-12-02 18:14:29,682 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 18:14:29,685 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 18:14:29,685 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 18:14:29,688 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 18:14:29,688 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 06:14:28" (1/3) ... [2023-12-02 18:14:29,689 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74ac270d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:14:29, skipping insertion in model container [2023-12-02 18:14:29,689 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:14:29" (2/3) ... [2023-12-02 18:14:29,689 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74ac270d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:14:29, skipping insertion in model container [2023-12-02 18:14:29,689 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:14:29" (3/3) ... [2023-12-02 18:14:29,691 INFO L112 eAbstractionObserver]: Analyzing ICFG egcd3-ll_valuebound20.c [2023-12-02 18:14:29,709 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 18:14:29,710 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 50 error locations. [2023-12-02 18:14:29,752 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 18:14:29,759 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;@43488ae2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 18:14:29,759 INFO L358 AbstractCegarLoop]: Starting to check reachability of 50 error locations. [2023-12-02 18:14:29,764 INFO L276 IsEmpty]: Start isEmpty. Operand has 125 states, 63 states have (on average 1.8888888888888888) internal successors, (119), 113 states have internal predecessors, (119), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-02 18:14:29,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-02 18:14:29,771 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:14:29,772 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:14:29,772 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2023-12-02 18:14:29,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:14:29,778 INFO L85 PathProgramCache]: Analyzing trace with hash 1353732251, now seen corresponding path program 1 times [2023-12-02 18:14:29,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:14:29,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679008762] [2023-12-02 18:14:29,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:14:29,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:14:29,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:14:29,921 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:14:29,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679008762] [2023-12-02 18:14:29,921 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-02 18:14:29,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1283270211] [2023-12-02 18:14:29,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:14:29,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:14:29,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:14:29,928 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:14:29,929 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 18:14:29,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:14:29,989 INFO L262 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-02 18:14:29,993 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:14:30,011 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-02 18:14:30,011 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:14:30,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1283270211] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:14:30,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:14:30,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 18:14:30,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067783121] [2023-12-02 18:14:30,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:14:30,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-02 18:14:30,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:14:30,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-02 18:14:30,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 18:14:30,047 INFO L87 Difference]: Start difference. First operand has 125 states, 63 states have (on average 1.8888888888888888) internal successors, (119), 113 states have internal predecessors, (119), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-02 18:14:30,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:14:30,086 INFO L93 Difference]: Finished difference Result 241 states and 262 transitions. [2023-12-02 18:14:30,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 18:14:30,088 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 17 [2023-12-02 18:14:30,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:14:30,095 INFO L225 Difference]: With dead ends: 241 [2023-12-02 18:14:30,095 INFO L226 Difference]: Without dead ends: 122 [2023-12-02 18:14:30,098 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 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 18:14:30,101 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 18:14:30,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 130 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 18:14:30,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2023-12-02 18:14:30,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2023-12-02 18:14:30,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 62 states have (on average 1.8387096774193548) internal successors, (114), 111 states have internal predecessors, (114), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-02 18:14:30,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 130 transitions. [2023-12-02 18:14:30,142 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 130 transitions. Word has length 17 [2023-12-02 18:14:30,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:14:30,143 INFO L495 AbstractCegarLoop]: Abstraction has 122 states and 130 transitions. [2023-12-02 18:14:30,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-02 18:14:30,144 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 130 transitions. [2023-12-02 18:14:30,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-02 18:14:30,145 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:14:30,145 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:14:30,151 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 18:14:30,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-02 18:14:30,346 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2023-12-02 18:14:30,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:14:30,347 INFO L85 PathProgramCache]: Analyzing trace with hash -984172713, now seen corresponding path program 1 times [2023-12-02 18:14:30,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:14:30,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6509358] [2023-12-02 18:14:30,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:14:30,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:14:30,367 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 18:14:30,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1603052369] [2023-12-02 18:14:30,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:14:30,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:14:30,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:14:30,369 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:14:30,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 18:14:30,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:14:30,420 INFO L262 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 18:14:30,422 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:14:30,482 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-02 18:14:30,482 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:14:30,482 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:14:30,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6509358] [2023-12-02 18:14:30,483 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 18:14:30,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1603052369] [2023-12-02 18:14:30,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1603052369] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:14:30,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:14:30,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 18:14:30,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024784195] [2023-12-02 18:14:30,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:14:30,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 18:14:30,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:14:30,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 18:14:30,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 18:14:30,487 INFO L87 Difference]: Start difference. First operand 122 states and 130 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-02 18:14:30,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:14:30,690 INFO L93 Difference]: Finished difference Result 217 states and 231 transitions. [2023-12-02 18:14:30,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 18:14:30,691 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 18 [2023-12-02 18:14:30,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:14:30,694 INFO L225 Difference]: With dead ends: 217 [2023-12-02 18:14:30,694 INFO L226 Difference]: Without dead ends: 189 [2023-12-02 18:14:30,694 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-02 18:14:30,696 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 238 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 18:14:30,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 228 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 18:14:30,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2023-12-02 18:14:30,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 124. [2023-12-02 18:14:30,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 64 states have (on average 1.8125) internal successors, (116), 113 states have internal predecessors, (116), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-02 18:14:30,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 132 transitions. [2023-12-02 18:14:30,713 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 132 transitions. Word has length 18 [2023-12-02 18:14:30,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:14:30,714 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 132 transitions. [2023-12-02 18:14:30,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-02 18:14:30,714 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 132 transitions. [2023-12-02 18:14:30,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-02 18:14:30,715 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:14:30,715 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:14:30,720 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-02 18:14:30,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:14:30,920 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2023-12-02 18:14:30,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:14:30,921 INFO L85 PathProgramCache]: Analyzing trace with hash -2043804872, now seen corresponding path program 1 times [2023-12-02 18:14:30,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:14:30,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470636657] [2023-12-02 18:14:30,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:14:30,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:14:30,939 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 18:14:30,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1539391551] [2023-12-02 18:14:30,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:14:30,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:14:30,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:14:30,941 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:14:30,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-02 18:14:30,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:14:30,990 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 18:14:30,991 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:14:31,008 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-02 18:14:31,009 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:14:31,009 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:14:31,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470636657] [2023-12-02 18:14:31,010 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 18:14:31,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1539391551] [2023-12-02 18:14:31,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1539391551] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:14:31,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:14:31,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 18:14:31,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748368040] [2023-12-02 18:14:31,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:14:31,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 18:14:31,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:14:31,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 18:14:31,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 18:14:31,012 INFO L87 Difference]: Start difference. First operand 124 states and 132 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-02 18:14:31,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:14:31,081 INFO L93 Difference]: Finished difference Result 197 states and 211 transitions. [2023-12-02 18:14:31,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 18:14:31,081 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 21 [2023-12-02 18:14:31,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:14:31,083 INFO L225 Difference]: With dead ends: 197 [2023-12-02 18:14:31,083 INFO L226 Difference]: Without dead ends: 193 [2023-12-02 18:14:31,084 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 19 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 18:14:31,085 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 63 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 18:14:31,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 208 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 18:14:31,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2023-12-02 18:14:31,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 163. [2023-12-02 18:14:31,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 99 states have (on average 1.8080808080808082) internal successors, (179), 148 states have internal predecessors, (179), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-02 18:14:31,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 203 transitions. [2023-12-02 18:14:31,103 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 203 transitions. Word has length 21 [2023-12-02 18:14:31,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:14:31,104 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 203 transitions. [2023-12-02 18:14:31,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-02 18:14:31,104 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 203 transitions. [2023-12-02 18:14:31,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-02 18:14:31,105 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:14:31,105 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:14:31,109 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-02 18:14:31,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:14:31,306 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2023-12-02 18:14:31,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:14:31,306 INFO L85 PathProgramCache]: Analyzing trace with hash -2043805254, now seen corresponding path program 1 times [2023-12-02 18:14:31,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:14:31,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363699574] [2023-12-02 18:14:31,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:14:31,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:14:31,322 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 18:14:31,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1212480359] [2023-12-02 18:14:31,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:14:31,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:14:31,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:14:31,323 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:14:31,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-02 18:14:31,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:14:31,370 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-02 18:14:31,372 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:14:31,531 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-02 18:14:31,532 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:14:31,800 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-02 18:14:31,800 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:14:31,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363699574] [2023-12-02 18:14:31,801 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 18:14:31,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1212480359] [2023-12-02 18:14:31,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1212480359] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-02 18:14:31,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 18:14:31,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2023-12-02 18:14:31,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987566258] [2023-12-02 18:14:31,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:14:31,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 18:14:31,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:14:31,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 18:14:31,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2023-12-02 18:14:31,803 INFO L87 Difference]: Start difference. First operand 163 states and 203 transitions. Second operand has 7 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-02 18:14:32,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:14:32,107 INFO L93 Difference]: Finished difference Result 177 states and 218 transitions. [2023-12-02 18:14:32,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 18:14:32,108 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 21 [2023-12-02 18:14:32,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:14:32,110 INFO L225 Difference]: With dead ends: 177 [2023-12-02 18:14:32,110 INFO L226 Difference]: Without dead ends: 176 [2023-12-02 18:14:32,111 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2023-12-02 18:14:32,112 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 287 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 18:14:32,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [288 Valid, 199 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 18:14:32,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2023-12-02 18:14:32,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 167. [2023-12-02 18:14:32,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 103 states have (on average 1.7766990291262137) internal successors, (183), 152 states have internal predecessors, (183), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-02 18:14:32,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 207 transitions. [2023-12-02 18:14:32,134 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 207 transitions. Word has length 21 [2023-12-02 18:14:32,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:14:32,135 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 207 transitions. [2023-12-02 18:14:32,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-02 18:14:32,135 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 207 transitions. [2023-12-02 18:14:32,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-02 18:14:32,136 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:14:32,136 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:14:32,142 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-02 18:14:32,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:14:32,337 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2023-12-02 18:14:32,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:14:32,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1066546645, now seen corresponding path program 1 times [2023-12-02 18:14:32,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:14:32,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146308572] [2023-12-02 18:14:32,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:14:32,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:14:32,351 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 18:14:32,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1239292122] [2023-12-02 18:14:32,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:14:32,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:14:32,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:14:32,352 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:14:32,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-02 18:14:32,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:14:32,395 INFO L262 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-02 18:14:32,397 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:14:32,528 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-02 18:14:32,529 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:14:32,748 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-02 18:14:32,749 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:14:32,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146308572] [2023-12-02 18:14:32,749 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 18:14:32,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1239292122] [2023-12-02 18:14:32,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1239292122] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-02 18:14:32,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 18:14:32,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2023-12-02 18:14:32,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125957460] [2023-12-02 18:14:32,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:14:32,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 18:14:32,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:14:32,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 18:14:32,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2023-12-02 18:14:32,751 INFO L87 Difference]: Start difference. First operand 167 states and 207 transitions. Second operand has 7 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-02 18:14:33,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:14:33,040 INFO L93 Difference]: Finished difference Result 178 states and 218 transitions. [2023-12-02 18:14:33,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 18:14:33,040 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 22 [2023-12-02 18:14:33,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:14:33,042 INFO L225 Difference]: With dead ends: 178 [2023-12-02 18:14:33,042 INFO L226 Difference]: Without dead ends: 177 [2023-12-02 18:14:33,042 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2023-12-02 18:14:33,043 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 356 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 18:14:33,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [357 Valid, 199 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 18:14:33,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2023-12-02 18:14:33,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 168. [2023-12-02 18:14:33,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 104 states have (on average 1.7596153846153846) internal successors, (183), 153 states have internal predecessors, (183), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-02 18:14:33,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 207 transitions. [2023-12-02 18:14:33,065 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 207 transitions. Word has length 22 [2023-12-02 18:14:33,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:14:33,065 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 207 transitions. [2023-12-02 18:14:33,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-02 18:14:33,066 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 207 transitions. [2023-12-02 18:14:33,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-02 18:14:33,066 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:14:33,066 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:14:33,072 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-02 18:14:33,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:14:33,267 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2023-12-02 18:14:33,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:14:33,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1296422886, now seen corresponding path program 1 times [2023-12-02 18:14:33,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:14:33,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244181281] [2023-12-02 18:14:33,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:14:33,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:14:33,280 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 18:14:33,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [331310592] [2023-12-02 18:14:33,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:14:33,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:14:33,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:14:33,282 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:14:33,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-02 18:14:33,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:14:33,330 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 18:14:33,332 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:14:33,360 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-02 18:14:33,360 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:14:33,360 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:14:33,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244181281] [2023-12-02 18:14:33,360 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 18:14:33,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [331310592] [2023-12-02 18:14:33,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [331310592] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:14:33,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:14:33,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 18:14:33,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546163646] [2023-12-02 18:14:33,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:14:33,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 18:14:33,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:14:33,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 18:14:33,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 18:14:33,362 INFO L87 Difference]: Start difference. First operand 168 states and 207 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-02 18:14:33,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:14:33,556 INFO L93 Difference]: Finished difference Result 196 states and 211 transitions. [2023-12-02 18:14:33,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 18:14:33,557 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 23 [2023-12-02 18:14:33,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:14:33,558 INFO L225 Difference]: With dead ends: 196 [2023-12-02 18:14:33,558 INFO L226 Difference]: Without dead ends: 195 [2023-12-02 18:14:33,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 18:14:33,560 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 58 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 18:14:33,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 389 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 18:14:33,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2023-12-02 18:14:33,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 169. [2023-12-02 18:14:33,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 105 states have (on average 1.7523809523809524) internal successors, (184), 154 states have internal predecessors, (184), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-02 18:14:33,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 208 transitions. [2023-12-02 18:14:33,578 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 208 transitions. Word has length 23 [2023-12-02 18:14:33,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:14:33,579 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 208 transitions. [2023-12-02 18:14:33,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-02 18:14:33,579 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 208 transitions. [2023-12-02 18:14:33,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-02 18:14:33,580 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:14:33,580 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:14:33,585 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-02 18:14:33,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:14:33,781 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2023-12-02 18:14:33,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:14:33,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1296792292, now seen corresponding path program 1 times [2023-12-02 18:14:33,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:14:33,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251647299] [2023-12-02 18:14:33,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:14:33,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:14:33,790 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 18:14:33,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [893363738] [2023-12-02 18:14:33,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:14:33,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:14:33,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:14:33,792 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:14:33,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-02 18:14:33,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:14:33,833 INFO L262 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-02 18:14:33,834 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:14:33,910 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-02 18:14:33,910 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:14:33,910 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:14:33,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251647299] [2023-12-02 18:14:33,911 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 18:14:33,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [893363738] [2023-12-02 18:14:33,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [893363738] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:14:33,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:14:33,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 18:14:33,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509313166] [2023-12-02 18:14:33,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:14:33,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 18:14:33,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:14:33,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 18:14:33,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-02 18:14:33,913 INFO L87 Difference]: Start difference. First operand 169 states and 208 transitions. Second operand has 7 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-02 18:14:34,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:14:34,326 INFO L93 Difference]: Finished difference Result 249 states and 271 transitions. [2023-12-02 18:14:34,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 18:14:34,329 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 23 [2023-12-02 18:14:34,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:14:34,331 INFO L225 Difference]: With dead ends: 249 [2023-12-02 18:14:34,331 INFO L226 Difference]: Without dead ends: 248 [2023-12-02 18:14:34,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-02 18:14:34,332 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 433 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 413 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 437 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 18:14:34,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [437 Valid, 317 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 413 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 18:14:34,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2023-12-02 18:14:34,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 169. [2023-12-02 18:14:34,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 105 states have (on average 1.7428571428571429) internal successors, (183), 154 states have internal predecessors, (183), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-02 18:14:34,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 207 transitions. [2023-12-02 18:14:34,354 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 207 transitions. Word has length 23 [2023-12-02 18:14:34,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:14:34,354 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 207 transitions. [2023-12-02 18:14:34,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-02 18:14:34,355 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 207 transitions. [2023-12-02 18:14:34,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-12-02 18:14:34,355 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:14:34,356 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:14:34,360 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-02 18:14:34,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:14:34,556 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2023-12-02 18:14:34,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:14:34,557 INFO L85 PathProgramCache]: Analyzing trace with hash -1534403647, now seen corresponding path program 1 times [2023-12-02 18:14:34,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:14:34,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183598442] [2023-12-02 18:14:34,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:14:34,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:14:34,567 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 18:14:34,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [406708087] [2023-12-02 18:14:34,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:14:34,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:14:34,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:14:34,569 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:14:34,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-02 18:14:34,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:14:34,617 INFO L262 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 18:14:34,618 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:14:34,660 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-02 18:14:34,660 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:14:34,660 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:14:34,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183598442] [2023-12-02 18:14:34,660 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 18:14:34,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [406708087] [2023-12-02 18:14:34,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [406708087] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:14:34,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:14:34,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 18:14:34,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653952898] [2023-12-02 18:14:34,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:14:34,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 18:14:34,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:14:34,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 18:14:34,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 18:14:34,662 INFO L87 Difference]: Start difference. First operand 169 states and 207 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-02 18:14:34,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:14:34,785 INFO L93 Difference]: Finished difference Result 194 states and 209 transitions. [2023-12-02 18:14:34,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 18:14:34,786 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 24 [2023-12-02 18:14:34,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:14:34,788 INFO L225 Difference]: With dead ends: 194 [2023-12-02 18:14:34,788 INFO L226 Difference]: Without dead ends: 193 [2023-12-02 18:14:34,788 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 18:14:34,789 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 58 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 18:14:34,789 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 270 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 18:14:34,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2023-12-02 18:14:34,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 170. [2023-12-02 18:14:34,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 106 states have (on average 1.7358490566037736) internal successors, (184), 155 states have internal predecessors, (184), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-02 18:14:34,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 208 transitions. [2023-12-02 18:14:34,805 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 208 transitions. Word has length 24 [2023-12-02 18:14:34,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:14:34,806 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 208 transitions. [2023-12-02 18:14:34,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-02 18:14:34,806 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 208 transitions. [2023-12-02 18:14:34,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-12-02 18:14:34,807 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:14:34,807 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:14:34,812 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-02 18:14:35,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:14:35,012 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2023-12-02 18:14:35,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:14:35,012 INFO L85 PathProgramCache]: Analyzing trace with hash -1545855305, now seen corresponding path program 1 times [2023-12-02 18:14:35,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:14:35,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335207700] [2023-12-02 18:14:35,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:14:35,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:14:35,019 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 18:14:35,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [568791155] [2023-12-02 18:14:35,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:14:35,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:14:35,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:14:35,020 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:14:35,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-02 18:14:35,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:14:35,059 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-02 18:14:35,061 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:14:35,144 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-02 18:14:35,144 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:14:35,381 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-02 18:14:35,381 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:14:35,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335207700] [2023-12-02 18:14:35,381 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 18:14:35,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [568791155] [2023-12-02 18:14:35,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [568791155] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:14:35,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1857344274] [2023-12-02 18:14:35,397 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2023-12-02 18:14:35,397 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 18:14:35,399 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 18:14:35,403 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 18:14:35,403 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 18:14:35,784 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 18:14:35,785 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 18:14:36,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1857344274] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:14:36,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 18:14:36,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [4, 4] total 17 [2023-12-02 18:14:36,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030151964] [2023-12-02 18:14:36,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:14:36,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-02 18:14:36,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:14:36,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-02 18:14:36,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=199, Unknown=0, NotChecked=0, Total=306 [2023-12-02 18:14:36,461 INFO L87 Difference]: Start difference. First operand 170 states and 208 transitions. Second operand has 13 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 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 18:14:38,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:14:38,040 INFO L93 Difference]: Finished difference Result 280 states and 324 transitions. [2023-12-02 18:14:38,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-02 18:14:38,041 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 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) Word has length 24 [2023-12-02 18:14:38,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:14:38,043 INFO L225 Difference]: With dead ends: 280 [2023-12-02 18:14:38,043 INFO L226 Difference]: Without dead ends: 261 [2023-12-02 18:14:38,043 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=107, Invalid=199, Unknown=0, NotChecked=0, Total=306 [2023-12-02 18:14:38,044 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 416 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 402 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 432 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-02 18:14:38,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [432 Valid, 140 Invalid, 462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 402 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-02 18:14:38,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2023-12-02 18:14:38,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 232. [2023-12-02 18:14:38,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 160 states have (on average 1.5125) internal successors, (242), 209 states have internal predecessors, (242), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-02 18:14:38,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 282 transitions. [2023-12-02 18:14:38,080 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 282 transitions. Word has length 24 [2023-12-02 18:14:38,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:14:38,081 INFO L495 AbstractCegarLoop]: Abstraction has 232 states and 282 transitions. [2023-12-02 18:14:38,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 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 18:14:38,081 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 282 transitions. [2023-12-02 18:14:38,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-12-02 18:14:38,082 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:14:38,082 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:14:38,086 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-12-02 18:14:38,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:14:38,284 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2023-12-02 18:14:38,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:14:38,284 INFO L85 PathProgramCache]: Analyzing trace with hash -321872644, now seen corresponding path program 1 times [2023-12-02 18:14:38,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:14:38,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286615541] [2023-12-02 18:14:38,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:14:38,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:14:38,293 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 18:14:38,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [362658979] [2023-12-02 18:14:38,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:14:38,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:14:38,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:14:38,295 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:14:38,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-02 18:14:38,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:14:38,334 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 18:14:38,335 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:14:38,370 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-02 18:14:38,370 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:14:38,371 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:14:38,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286615541] [2023-12-02 18:14:38,371 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 18:14:38,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [362658979] [2023-12-02 18:14:38,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [362658979] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:14:38,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:14:38,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 18:14:38,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449007569] [2023-12-02 18:14:38,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:14:38,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 18:14:38,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:14:38,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 18:14:38,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 18:14:38,373 INFO L87 Difference]: Start difference. First operand 232 states and 282 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-02 18:14:38,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:14:38,631 INFO L93 Difference]: Finished difference Result 284 states and 311 transitions. [2023-12-02 18:14:38,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 18:14:38,632 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 25 [2023-12-02 18:14:38,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:14:38,634 INFO L225 Difference]: With dead ends: 284 [2023-12-02 18:14:38,634 INFO L226 Difference]: Without dead ends: 283 [2023-12-02 18:14:38,634 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 22 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 18:14:38,635 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 111 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 18:14:38,635 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 337 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 18:14:38,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2023-12-02 18:14:38,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 238. [2023-12-02 18:14:38,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 166 states have (on average 1.4939759036144578) internal successors, (248), 215 states have internal predecessors, (248), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-02 18:14:38,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 288 transitions. [2023-12-02 18:14:38,668 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 288 transitions. Word has length 25 [2023-12-02 18:14:38,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:14:38,668 INFO L495 AbstractCegarLoop]: Abstraction has 238 states and 288 transitions. [2023-12-02 18:14:38,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-02 18:14:38,668 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 288 transitions. [2023-12-02 18:14:38,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-02 18:14:38,669 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:14:38,669 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:14:38,673 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-02 18:14:38,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-02 18:14:38,870 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2023-12-02 18:14:38,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:14:38,870 INFO L85 PathProgramCache]: Analyzing trace with hash -1388117213, now seen corresponding path program 1 times [2023-12-02 18:14:38,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:14:38,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894529759] [2023-12-02 18:14:38,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:14:38,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:14:38,877 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 18:14:38,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [255881909] [2023-12-02 18:14:38,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:14:38,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:14:38,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:14:38,878 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:14:38,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-02 18:14:38,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:14:38,916 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 18:14:38,917 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:14:38,952 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-02 18:14:38,952 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:14:38,953 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:14:38,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894529759] [2023-12-02 18:14:38,953 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 18:14:38,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [255881909] [2023-12-02 18:14:38,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [255881909] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:14:38,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:14:38,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 18:14:38,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655543168] [2023-12-02 18:14:38,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:14:38,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 18:14:38,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:14:38,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 18:14:38,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 18:14:38,955 INFO L87 Difference]: Start difference. First operand 238 states and 288 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-02 18:14:39,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:14:39,082 INFO L93 Difference]: Finished difference Result 284 states and 310 transitions. [2023-12-02 18:14:39,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 18:14:39,082 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 26 [2023-12-02 18:14:39,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:14:39,084 INFO L225 Difference]: With dead ends: 284 [2023-12-02 18:14:39,085 INFO L226 Difference]: Without dead ends: 283 [2023-12-02 18:14:39,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 23 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 18:14:39,086 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 151 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 18:14:39,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 261 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 18:14:39,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2023-12-02 18:14:39,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 239. [2023-12-02 18:14:39,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 167 states have (on average 1.4910179640718564) internal successors, (249), 216 states have internal predecessors, (249), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-02 18:14:39,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 289 transitions. [2023-12-02 18:14:39,119 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 289 transitions. Word has length 26 [2023-12-02 18:14:39,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:14:39,119 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 289 transitions. [2023-12-02 18:14:39,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-02 18:14:39,120 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 289 transitions. [2023-12-02 18:14:39,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-12-02 18:14:39,120 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:14:39,120 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:14:39,126 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-02 18:14:39,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:14:39,326 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2023-12-02 18:14:39,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:14:39,327 INFO L85 PathProgramCache]: Analyzing trace with hash -81960482, now seen corresponding path program 1 times [2023-12-02 18:14:39,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:14:39,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969935127] [2023-12-02 18:14:39,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:14:39,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:14:39,334 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 18:14:39,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [499548769] [2023-12-02 18:14:39,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:14:39,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:14:39,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:14:39,335 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:14:39,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-02 18:14:39,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:14:39,374 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 18:14:39,376 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:14:39,407 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-02 18:14:39,407 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:14:39,408 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:14:39,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969935127] [2023-12-02 18:14:39,408 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 18:14:39,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [499548769] [2023-12-02 18:14:39,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [499548769] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:14:39,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:14:39,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 18:14:39,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137892461] [2023-12-02 18:14:39,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:14:39,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 18:14:39,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:14:39,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 18:14:39,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 18:14:39,410 INFO L87 Difference]: Start difference. First operand 239 states and 289 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-02 18:14:39,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:14:39,621 INFO L93 Difference]: Finished difference Result 263 states and 297 transitions. [2023-12-02 18:14:39,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 18:14:39,621 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 27 [2023-12-02 18:14:39,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:14:39,624 INFO L225 Difference]: With dead ends: 263 [2023-12-02 18:14:39,624 INFO L226 Difference]: Without dead ends: 262 [2023-12-02 18:14:39,624 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 18:14:39,625 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 54 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 18:14:39,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 364 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 18:14:39,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2023-12-02 18:14:39,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 242. [2023-12-02 18:14:39,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 170 states have (on average 1.4941176470588236) internal successors, (254), 219 states have internal predecessors, (254), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-02 18:14:39,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 294 transitions. [2023-12-02 18:14:39,650 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 294 transitions. Word has length 27 [2023-12-02 18:14:39,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:14:39,650 INFO L495 AbstractCegarLoop]: Abstraction has 242 states and 294 transitions. [2023-12-02 18:14:39,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-02 18:14:39,651 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 294 transitions. [2023-12-02 18:14:39,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-12-02 18:14:39,651 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:14:39,652 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:14:39,656 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-12-02 18:14:39,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:14:39,853 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2023-12-02 18:14:39,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:14:39,853 INFO L85 PathProgramCache]: Analyzing trace with hash 1754192517, now seen corresponding path program 1 times [2023-12-02 18:14:39,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:14:39,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312450817] [2023-12-02 18:14:39,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:14:39,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:14:39,861 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 18:14:39,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1172630582] [2023-12-02 18:14:39,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:14:39,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:14:39,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:14:39,862 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:14:39,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-02 18:14:39,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:14:39,907 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 18:14:39,908 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:14:39,980 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-02 18:14:39,981 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:14:39,981 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:14:39,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312450817] [2023-12-02 18:14:39,981 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 18:14:39,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1172630582] [2023-12-02 18:14:39,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1172630582] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:14:39,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:14:39,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 18:14:39,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13302484] [2023-12-02 18:14:39,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:14:39,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 18:14:39,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:14:39,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 18:14:39,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 18:14:39,983 INFO L87 Difference]: Start difference. First operand 242 states and 294 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-02 18:14:40,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:14:40,235 INFO L93 Difference]: Finished difference Result 277 states and 305 transitions. [2023-12-02 18:14:40,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 18:14:40,236 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 28 [2023-12-02 18:14:40,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:14:40,238 INFO L225 Difference]: With dead ends: 277 [2023-12-02 18:14:40,238 INFO L226 Difference]: Without dead ends: 276 [2023-12-02 18:14:40,238 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 18:14:40,239 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 133 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 18:14:40,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 330 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 18:14:40,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2023-12-02 18:14:40,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 244. [2023-12-02 18:14:40,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 172 states have (on average 1.4883720930232558) internal successors, (256), 221 states have internal predecessors, (256), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-02 18:14:40,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 296 transitions. [2023-12-02 18:14:40,271 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 296 transitions. Word has length 28 [2023-12-02 18:14:40,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:14:40,271 INFO L495 AbstractCegarLoop]: Abstraction has 244 states and 296 transitions. [2023-12-02 18:14:40,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-02 18:14:40,272 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 296 transitions. [2023-12-02 18:14:40,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-12-02 18:14:40,272 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:14:40,272 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:14:40,278 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-12-02 18:14:40,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:14:40,475 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2023-12-02 18:14:40,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:14:40,475 INFO L85 PathProgramCache]: Analyzing trace with hash -2012736896, now seen corresponding path program 1 times [2023-12-02 18:14:40,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:14:40,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685562757] [2023-12-02 18:14:40,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:14:40,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:14:40,485 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 18:14:40,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [941919765] [2023-12-02 18:14:40,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:14:40,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:14:40,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:14:40,486 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:14:40,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-02 18:14:40,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:14:40,528 INFO L262 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 18:14:40,529 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:14:40,563 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-02 18:14:40,563 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:14:40,616 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-02 18:14:40,616 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:14:40,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685562757] [2023-12-02 18:14:40,617 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 18:14:40,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [941919765] [2023-12-02 18:14:40,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [941919765] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:14:40,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1423366258] [2023-12-02 18:14:40,619 INFO L159 IcfgInterpreter]: Started Sifa with 24 locations of interest [2023-12-02 18:14:40,619 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 18:14:40,619 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 18:14:40,619 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 18:14:40,620 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 18:14:41,353 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 18:14:41,354 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 18:14:42,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1423366258] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:14:42,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 18:14:42,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [7, 7] total 20 [2023-12-02 18:14:42,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367718385] [2023-12-02 18:14:42,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:14:42,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-02 18:14:42,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:14:42,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-02 18:14:42,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=267, Unknown=0, NotChecked=0, Total=380 [2023-12-02 18:14:42,571 INFO L87 Difference]: Start difference. First operand 244 states and 296 transitions. Second operand has 15 states, 10 states have (on average 1.9) internal successors, (19), 9 states have internal predecessors, (19), 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 18:14:44,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:14:44,520 INFO L93 Difference]: Finished difference Result 409 states and 485 transitions. [2023-12-02 18:14:44,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-02 18:14:44,521 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 10 states have (on average 1.9) internal successors, (19), 9 states have internal predecessors, (19), 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) Word has length 31 [2023-12-02 18:14:44,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:14:44,523 INFO L225 Difference]: With dead ends: 409 [2023-12-02 18:14:44,523 INFO L226 Difference]: Without dead ends: 357 [2023-12-02 18:14:44,524 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 69 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=127, Invalid=293, Unknown=0, NotChecked=0, Total=420 [2023-12-02 18:14:44,524 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 494 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 621 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 506 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 621 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-02 18:14:44,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [506 Valid, 151 Invalid, 686 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 621 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-02 18:14:44,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2023-12-02 18:14:44,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 314. [2023-12-02 18:14:44,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 234 states have (on average 1.4786324786324787) internal successors, (346), 283 states have internal predecessors, (346), 28 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2023-12-02 18:14:44,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 402 transitions. [2023-12-02 18:14:44,566 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 402 transitions. Word has length 31 [2023-12-02 18:14:44,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:14:44,566 INFO L495 AbstractCegarLoop]: Abstraction has 314 states and 402 transitions. [2023-12-02 18:14:44,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 10 states have (on average 1.9) internal successors, (19), 9 states have internal predecessors, (19), 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 18:14:44,566 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 402 transitions. [2023-12-02 18:14:44,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-12-02 18:14:44,567 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:14:44,567 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:14:44,573 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-12-02 18:14:44,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-12-02 18:14:44,768 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2023-12-02 18:14:44,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:14:44,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1676389264, now seen corresponding path program 1 times [2023-12-02 18:14:44,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:14:44,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877206901] [2023-12-02 18:14:44,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:14:44,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:14:44,777 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 18:14:44,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [141878230] [2023-12-02 18:14:44,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:14:44,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:14:44,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:14:44,779 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:14:44,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-02 18:14:44,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:14:44,832 INFO L262 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 18:14:44,833 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:14:44,920 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-02 18:14:44,920 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:14:44,920 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:14:44,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877206901] [2023-12-02 18:14:44,920 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 18:14:44,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [141878230] [2023-12-02 18:14:44,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [141878230] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:14:44,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:14:44,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 18:14:44,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013498386] [2023-12-02 18:14:44,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:14:44,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 18:14:44,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:14:44,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 18:14:44,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 18:14:44,923 INFO L87 Difference]: Start difference. First operand 314 states and 402 transitions. Second operand has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-02 18:14:45,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:14:45,018 INFO L93 Difference]: Finished difference Result 314 states and 402 transitions. [2023-12-02 18:14:45,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 18:14:45,019 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 56 [2023-12-02 18:14:45,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:14:45,022 INFO L225 Difference]: With dead ends: 314 [2023-12-02 18:14:45,022 INFO L226 Difference]: Without dead ends: 312 [2023-12-02 18:14:45,022 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 53 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 18:14:45,023 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 80 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 18:14:45,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 137 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 18:14:45,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2023-12-02 18:14:45,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 312. [2023-12-02 18:14:45,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 234 states have (on average 1.4444444444444444) internal successors, (338), 281 states have internal predecessors, (338), 28 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2023-12-02 18:14:45,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 394 transitions. [2023-12-02 18:14:45,066 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 394 transitions. Word has length 56 [2023-12-02 18:14:45,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:14:45,067 INFO L495 AbstractCegarLoop]: Abstraction has 312 states and 394 transitions. [2023-12-02 18:14:45,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-02 18:14:45,067 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 394 transitions. [2023-12-02 18:14:45,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-12-02 18:14:45,068 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:14:45,068 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:14:45,073 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-12-02 18:14:45,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-02 18:14:45,272 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2023-12-02 18:14:45,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:14:45,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1676340605, now seen corresponding path program 1 times [2023-12-02 18:14:45,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:14:45,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983753510] [2023-12-02 18:14:45,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:14:45,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:14:45,282 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 18:14:45,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1655639122] [2023-12-02 18:14:45,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:14:45,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:14:45,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:14:45,283 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:14:45,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-02 18:14:45,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:14:45,335 INFO L262 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 18:14:45,336 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:14:45,344 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-02 18:14:45,345 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:14:45,345 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:14:45,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983753510] [2023-12-02 18:14:45,345 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 18:14:45,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1655639122] [2023-12-02 18:14:45,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1655639122] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:14:45,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:14:45,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 18:14:45,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637381012] [2023-12-02 18:14:45,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:14:45,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 18:14:45,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:14:45,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 18:14:45,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 18:14:45,347 INFO L87 Difference]: Start difference. First operand 312 states and 394 transitions. Second operand has 3 states, 2 states have (on average 17.0) internal successors, (34), 3 states have internal predecessors, (34), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-02 18:14:45,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:14:45,415 INFO L93 Difference]: Finished difference Result 312 states and 394 transitions. [2023-12-02 18:14:45,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 18:14:45,416 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 17.0) internal successors, (34), 3 states have internal predecessors, (34), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 56 [2023-12-02 18:14:45,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:14:45,418 INFO L225 Difference]: With dead ends: 312 [2023-12-02 18:14:45,418 INFO L226 Difference]: Without dead ends: 311 [2023-12-02 18:14:45,419 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 54 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 18:14:45,419 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 11 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 18:14:45,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 217 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 18:14:45,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2023-12-02 18:14:45,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 311. [2023-12-02 18:14:45,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 234 states have (on average 1.4230769230769231) internal successors, (333), 280 states have internal predecessors, (333), 28 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2023-12-02 18:14:45,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 389 transitions. [2023-12-02 18:14:45,475 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 389 transitions. Word has length 56 [2023-12-02 18:14:45,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:14:45,475 INFO L495 AbstractCegarLoop]: Abstraction has 311 states and 389 transitions. [2023-12-02 18:14:45,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 17.0) internal successors, (34), 3 states have internal predecessors, (34), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-02 18:14:45,476 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 389 transitions. [2023-12-02 18:14:45,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-02 18:14:45,476 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:14:45,477 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:14:45,482 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-02 18:14:45,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-02 18:14:45,677 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2023-12-02 18:14:45,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:14:45,678 INFO L85 PathProgramCache]: Analyzing trace with hash -428459489, now seen corresponding path program 1 times [2023-12-02 18:14:45,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:14:45,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523010741] [2023-12-02 18:14:45,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:14:45,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:14:45,688 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 18:14:45,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [411645326] [2023-12-02 18:14:45,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:14:45,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:14:45,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:14:45,690 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:14:45,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-02 18:14:45,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:14:45,744 INFO L262 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 18:14:45,746 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:14:45,825 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-02 18:14:45,825 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:14:45,825 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:14:45,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523010741] [2023-12-02 18:14:45,825 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 18:14:45,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [411645326] [2023-12-02 18:14:45,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [411645326] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:14:45,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:14:45,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 18:14:45,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383135605] [2023-12-02 18:14:45,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:14:45,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 18:14:45,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:14:45,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 18:14:45,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 18:14:45,827 INFO L87 Difference]: Start difference. First operand 311 states and 389 transitions. Second operand has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-02 18:14:46,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:14:46,011 INFO L93 Difference]: Finished difference Result 478 states and 586 transitions. [2023-12-02 18:14:46,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 18:14:46,012 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 57 [2023-12-02 18:14:46,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:14:46,015 INFO L225 Difference]: With dead ends: 478 [2023-12-02 18:14:46,015 INFO L226 Difference]: Without dead ends: 476 [2023-12-02 18:14:46,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 54 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 18:14:46,016 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 95 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 18:14:46,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 296 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 18:14:46,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2023-12-02 18:14:46,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 374. [2023-12-02 18:14:46,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 289 states have (on average 1.439446366782007) internal successors, (416), 335 states have internal predecessors, (416), 36 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2023-12-02 18:14:46,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 488 transitions. [2023-12-02 18:14:46,084 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 488 transitions. Word has length 57 [2023-12-02 18:14:46,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:14:46,085 INFO L495 AbstractCegarLoop]: Abstraction has 374 states and 488 transitions. [2023-12-02 18:14:46,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-02 18:14:46,085 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 488 transitions. [2023-12-02 18:14:46,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-02 18:14:46,086 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:14:46,086 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:14:46,091 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-12-02 18:14:46,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-02 18:14:46,287 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2023-12-02 18:14:46,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:14:46,287 INFO L85 PathProgramCache]: Analyzing trace with hash -426951071, now seen corresponding path program 1 times [2023-12-02 18:14:46,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:14:46,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546199174] [2023-12-02 18:14:46,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:14:46,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:14:46,298 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 18:14:46,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1906798294] [2023-12-02 18:14:46,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:14:46,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:14:46,298 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:14:46,299 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:14:46,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-02 18:14:46,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:14:46,362 INFO L262 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 18:14:46,364 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:14:46,375 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-02 18:14:46,375 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:14:46,375 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:14:46,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546199174] [2023-12-02 18:14:46,376 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 18:14:46,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1906798294] [2023-12-02 18:14:46,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1906798294] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:14:46,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:14:46,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 18:14:46,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992138566] [2023-12-02 18:14:46,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:14:46,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 18:14:46,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:14:46,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 18:14:46,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 18:14:46,378 INFO L87 Difference]: Start difference. First operand 374 states and 488 transitions. Second operand has 3 states, 2 states have (on average 17.5) internal successors, (35), 3 states have internal predecessors, (35), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-02 18:14:46,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:14:46,457 INFO L93 Difference]: Finished difference Result 374 states and 488 transitions. [2023-12-02 18:14:46,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 18:14:46,458 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 17.5) internal successors, (35), 3 states have internal predecessors, (35), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 57 [2023-12-02 18:14:46,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:14:46,460 INFO L225 Difference]: With dead ends: 374 [2023-12-02 18:14:46,460 INFO L226 Difference]: Without dead ends: 373 [2023-12-02 18:14:46,461 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 55 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 18:14:46,461 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 8 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 18:14:46,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 219 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 18:14:46,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2023-12-02 18:14:46,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 373. [2023-12-02 18:14:46,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 289 states have (on average 1.4221453287197232) internal successors, (411), 334 states have internal predecessors, (411), 36 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2023-12-02 18:14:46,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 483 transitions. [2023-12-02 18:14:46,528 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 483 transitions. Word has length 57 [2023-12-02 18:14:46,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:14:46,529 INFO L495 AbstractCegarLoop]: Abstraction has 373 states and 483 transitions. [2023-12-02 18:14:46,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 17.5) internal successors, (35), 3 states have internal predecessors, (35), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-02 18:14:46,529 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 483 transitions. [2023-12-02 18:14:46,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-02 18:14:46,530 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:14:46,530 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:14:46,536 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-12-02 18:14:46,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-02 18:14:46,731 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2023-12-02 18:14:46,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:14:46,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1635034248, now seen corresponding path program 1 times [2023-12-02 18:14:46,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:14:46,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891732645] [2023-12-02 18:14:46,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:14:46,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:14:46,739 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 18:14:46,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1459611721] [2023-12-02 18:14:46,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:14:46,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:14:46,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:14:46,740 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:14:46,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-02 18:14:46,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:14:46,791 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-02 18:14:46,793 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:14:46,909 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-02 18:14:46,909 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:14:47,103 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-02 18:14:47,103 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:14:47,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891732645] [2023-12-02 18:14:47,103 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 18:14:47,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1459611721] [2023-12-02 18:14:47,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1459611721] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:14:47,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2025547402] [2023-12-02 18:14:47,107 INFO L159 IcfgInterpreter]: Started Sifa with 46 locations of interest [2023-12-02 18:14:47,107 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 18:14:47,107 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 18:14:47,107 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 18:14:47,108 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 18:14:48,805 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 3 for LOIs [2023-12-02 18:14:48,807 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 18:14:48,808 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 18:14:51,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [2025547402] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:14:51,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 18:14:51,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [7, 7] total 30 [2023-12-02 18:14:51,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497298512] [2023-12-02 18:14:51,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:14:51,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-02 18:14:51,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:14:51,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-02 18:14:51,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=706, Unknown=0, NotChecked=0, Total=930 [2023-12-02 18:14:51,752 INFO L87 Difference]: Start difference. First operand 373 states and 483 transitions. Second operand has 20 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 7 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-12-02 18:14:54,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:14:54,920 INFO L93 Difference]: Finished difference Result 403 states and 492 transitions. [2023-12-02 18:14:54,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-02 18:14:54,921 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 7 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Word has length 59 [2023-12-02 18:14:54,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:14:54,923 INFO L225 Difference]: With dead ends: 403 [2023-12-02 18:14:54,923 INFO L226 Difference]: Without dead ends: 397 [2023-12-02 18:14:54,924 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 131 SyntacticMatches, 15 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 565 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=249, Invalid=743, Unknown=0, NotChecked=0, Total=992 [2023-12-02 18:14:54,924 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 503 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 1196 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 515 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 1236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-02 18:14:54,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [515 Valid, 166 Invalid, 1236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1196 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-02 18:14:54,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2023-12-02 18:14:54,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 373. [2023-12-02 18:14:54,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 289 states have (on average 1.4013840830449826) internal successors, (405), 334 states have internal predecessors, (405), 36 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2023-12-02 18:14:54,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 477 transitions. [2023-12-02 18:14:54,998 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 477 transitions. Word has length 59 [2023-12-02 18:14:54,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:14:54,998 INFO L495 AbstractCegarLoop]: Abstraction has 373 states and 477 transitions. [2023-12-02 18:14:54,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 7 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-12-02 18:14:54,999 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 477 transitions. [2023-12-02 18:14:54,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-02 18:14:54,999 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:14:55,000 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:14:55,006 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-12-02 18:14:55,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:14:55,200 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2023-12-02 18:14:55,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:14:55,201 INFO L85 PathProgramCache]: Analyzing trace with hash -2089864280, now seen corresponding path program 1 times [2023-12-02 18:14:55,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:14:55,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150608514] [2023-12-02 18:14:55,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:14:55,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:14:55,209 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 18:14:55,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1389322487] [2023-12-02 18:14:55,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:14:55,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:14:55,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:14:55,211 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:14:55,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-02 18:14:55,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:14:55,267 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 18:14:55,268 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:14:55,423 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-02 18:14:55,423 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:14:55,423 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:14:55,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150608514] [2023-12-02 18:14:55,423 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 18:14:55,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1389322487] [2023-12-02 18:14:55,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1389322487] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:14:55,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:14:55,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 18:14:55,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072663762] [2023-12-02 18:14:55,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:14:55,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 18:14:55,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:14:55,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 18:14:55,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-02 18:14:55,425 INFO L87 Difference]: Start difference. First operand 373 states and 477 transitions. Second operand has 6 states, 5 states have (on average 8.6) internal successors, (43), 6 states have internal predecessors, (43), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-02 18:14:55,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:14:55,740 INFO L93 Difference]: Finished difference Result 410 states and 495 transitions. [2023-12-02 18:14:55,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 18:14:55,741 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.6) internal successors, (43), 6 states have internal predecessors, (43), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 65 [2023-12-02 18:14:55,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:14:55,743 INFO L225 Difference]: With dead ends: 410 [2023-12-02 18:14:55,743 INFO L226 Difference]: Without dead ends: 409 [2023-12-02 18:14:55,744 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2023-12-02 18:14:55,744 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 75 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 463 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 18:14:55,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 463 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 18:14:55,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2023-12-02 18:14:55,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 373. [2023-12-02 18:14:55,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 289 states have (on average 1.397923875432526) internal successors, (404), 334 states have internal predecessors, (404), 36 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2023-12-02 18:14:55,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 476 transitions. [2023-12-02 18:14:55,820 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 476 transitions. Word has length 65 [2023-12-02 18:14:55,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:14:55,821 INFO L495 AbstractCegarLoop]: Abstraction has 373 states and 476 transitions. [2023-12-02 18:14:55,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.6) internal successors, (43), 6 states have internal predecessors, (43), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-02 18:14:55,821 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 476 transitions. [2023-12-02 18:14:55,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-02 18:14:55,822 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:14:55,822 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:14:55,828 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-12-02 18:14:56,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:14:56,025 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2023-12-02 18:14:56,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:14:56,026 INFO L85 PathProgramCache]: Analyzing trace with hash -361283081, now seen corresponding path program 1 times [2023-12-02 18:14:56,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:14:56,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273552568] [2023-12-02 18:14:56,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:14:56,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:14:56,034 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 18:14:56,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [195259300] [2023-12-02 18:14:56,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:14:56,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:14:56,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:14:56,036 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:14:56,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-12-02 18:14:56,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:14:56,097 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 18:14:56,099 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:14:56,243 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-02 18:14:56,244 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:14:56,324 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:14:56,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273552568] [2023-12-02 18:14:56,324 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 18:14:56,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [195259300] [2023-12-02 18:14:56,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [195259300] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:14:56,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1321676116] [2023-12-02 18:14:56,328 INFO L159 IcfgInterpreter]: Started Sifa with 53 locations of interest [2023-12-02 18:14:56,328 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 18:14:56,328 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 18:14:56,328 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 18:14:56,329 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 18:14:58,357 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-12-02 18:14:58,358 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 18:14:58,359 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 18:15:00,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1321676116] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:15:00,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 18:15:00,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [5] total 24 [2023-12-02 18:15:00,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115037688] [2023-12-02 18:15:00,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:15:00,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-02 18:15:00,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:15:00,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-02 18:15:00,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=527, Unknown=0, NotChecked=0, Total=702 [2023-12-02 18:15:00,985 INFO L87 Difference]: Start difference. First operand 373 states and 476 transitions. Second operand has 21 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 states have internal predecessors, (43), 6 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) [2023-12-02 18:15:03,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:15:03,454 INFO L93 Difference]: Finished difference Result 601 states and 740 transitions. [2023-12-02 18:15:03,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-02 18:15:03,454 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 states have internal predecessors, (43), 6 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) Word has length 66 [2023-12-02 18:15:03,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:15:03,456 INFO L225 Difference]: With dead ends: 601 [2023-12-02 18:15:03,456 INFO L226 Difference]: Without dead ends: 414 [2023-12-02 18:15:03,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 106 SyntacticMatches, 17 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 427 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=220, Invalid=710, Unknown=0, NotChecked=0, Total=930 [2023-12-02 18:15:03,458 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 240 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 1252 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 1266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-02 18:15:03,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [254 Valid, 164 Invalid, 1266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1252 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-02 18:15:03,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2023-12-02 18:15:03,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 384. [2023-12-02 18:15:03,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 300 states have (on average 1.3833333333333333) internal successors, (415), 345 states have internal predecessors, (415), 36 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2023-12-02 18:15:03,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 487 transitions. [2023-12-02 18:15:03,506 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 487 transitions. Word has length 66 [2023-12-02 18:15:03,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:15:03,507 INFO L495 AbstractCegarLoop]: Abstraction has 384 states and 487 transitions. [2023-12-02 18:15:03,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 states have internal predecessors, (43), 6 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) [2023-12-02 18:15:03,507 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 487 transitions. [2023-12-02 18:15:03,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-02 18:15:03,508 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:15:03,508 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:15:03,512 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-12-02 18:15:03,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:15:03,708 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2023-12-02 18:15:03,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:15:03,709 INFO L85 PathProgramCache]: Analyzing trace with hash -1584531412, now seen corresponding path program 1 times [2023-12-02 18:15:03,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:15:03,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699511211] [2023-12-02 18:15:03,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:15:03,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:15:03,718 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 18:15:03,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1598925009] [2023-12-02 18:15:03,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:15:03,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:15:03,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:15:03,719 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:15:03,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-12-02 18:15:03,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:15:03,773 INFO L262 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-02 18:15:03,775 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:15:04,162 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-02 18:15:04,162 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:15:04,432 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:15:04,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699511211] [2023-12-02 18:15:04,432 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 18:15:04,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1598925009] [2023-12-02 18:15:04,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1598925009] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:15:04,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1181755520] [2023-12-02 18:15:04,436 INFO L159 IcfgInterpreter]: Started Sifa with 56 locations of interest [2023-12-02 18:15:04,436 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 18:15:04,437 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 18:15:04,437 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 18:15:04,437 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 18:17:05,082 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-12-02 18:17:05,083 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 18:17:05,084 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 18:17:24,526 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '16439#(and (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~q~0#1|)) (= |ULTIMATE.start_main_~b~0#1| 0) (<= (+ 9223372036854775809 (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|)) 0) (<= |ULTIMATE.start_main_~q~0#1| 9223372036854775807) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~s~0#1|)) (<= |ULTIMATE.start_main_~s~0#1| 9223372036854775807) (exists ((|v_ULTIMATE.start_main_~k~0#1_70| Int) (|v_ULTIMATE.start_main_~s~0#1_56| Int)) (and (<= (* |v_ULTIMATE.start_main_~s~0#1_56| |v_ULTIMATE.start_main_~k~0#1_70|) 9223372036854775807) (<= 0 (+ 9223372036854775808 (* |v_ULTIMATE.start_main_~s~0#1_56| |v_ULTIMATE.start_main_~k~0#1_70|))))))' at error location [2023-12-02 18:17:24,526 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 18:17:24,526 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 18:17:24,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2023-12-02 18:17:24,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531089962] [2023-12-02 18:17:24,527 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 18:17:24,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-02 18:17:24,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:17:24,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-02 18:17:24,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=471, Invalid=2609, Unknown=0, NotChecked=0, Total=3080 [2023-12-02 18:17:24,529 INFO L87 Difference]: Start difference. First operand 384 states and 487 transitions. Second operand has 11 states, 9 states have (on average 5.555555555555555) internal successors, (50), 10 states have internal predecessors, (50), 3 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-02 18:17:26,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:17:26,696 INFO L93 Difference]: Finished difference Result 533 states and 651 transitions. [2023-12-02 18:17:26,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-02 18:17:26,696 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 5.555555555555555) internal successors, (50), 10 states have internal predecessors, (50), 3 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 71 [2023-12-02 18:17:26,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:17:26,699 INFO L225 Difference]: With dead ends: 533 [2023-12-02 18:17:26,700 INFO L226 Difference]: Without dead ends: 531 [2023-12-02 18:17:26,701 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 103 SyntacticMatches, 6 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1380 ImplicationChecksByTransitivity, 19.8s TimeCoverageRelationStatistics Valid=550, Invalid=3482, Unknown=0, NotChecked=0, Total=4032 [2023-12-02 18:17:26,702 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 496 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 1260 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 500 SdHoareTripleChecker+Valid, 547 SdHoareTripleChecker+Invalid, 1289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-02 18:17:26,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [500 Valid, 547 Invalid, 1289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1260 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-02 18:17:26,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2023-12-02 18:17:26,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 457. [2023-12-02 18:17:26,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 457 states, 365 states have (on average 1.4438356164383561) internal successors, (527), 410 states have internal predecessors, (527), 44 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2023-12-02 18:17:26,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 615 transitions. [2023-12-02 18:17:26,757 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 615 transitions. Word has length 71 [2023-12-02 18:17:26,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:17:26,758 INFO L495 AbstractCegarLoop]: Abstraction has 457 states and 615 transitions. [2023-12-02 18:17:26,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 5.555555555555555) internal successors, (50), 10 states have internal predecessors, (50), 3 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-02 18:17:26,758 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 615 transitions. [2023-12-02 18:17:26,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-02 18:17:26,758 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:17:26,759 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:17:26,763 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-12-02 18:17:26,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-12-02 18:17:26,959 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr37ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2023-12-02 18:17:26,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:17:26,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1875833346, now seen corresponding path program 1 times [2023-12-02 18:17:26,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:17:26,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114620240] [2023-12-02 18:17:26,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:17:26,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:17:26,968 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 18:17:26,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1586908847] [2023-12-02 18:17:26,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:17:26,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:17:26,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:17:26,970 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:17:26,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-12-02 18:17:27,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:17:27,018 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-02 18:17:27,019 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:17:27,367 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-02 18:17:27,367 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:17:28,278 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:17:28,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114620240] [2023-12-02 18:17:28,279 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 18:17:28,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1586908847] [2023-12-02 18:17:28,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1586908847] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:17:28,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [231070698] [2023-12-02 18:17:28,281 INFO L159 IcfgInterpreter]: Started Sifa with 57 locations of interest [2023-12-02 18:17:28,281 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 18:17:28,282 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 18:17:28,282 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 18:17:28,282 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 18:19:22,218 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-12-02 18:19:22,219 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 18:19:22,219 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 18:19:38,600 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '17921#(and (exists ((|v_ULTIMATE.start_main_~s~0#1_61| Int) (|v_ULTIMATE.start_main_~k~0#1_85| Int)) (and (<= (* |v_ULTIMATE.start_main_~s~0#1_61| |v_ULTIMATE.start_main_~k~0#1_85|) 9223372036854775807) (<= 0 (+ (* |v_ULTIMATE.start_main_~s~0#1_61| |v_ULTIMATE.start_main_~k~0#1_85|) 9223372036854775808)))) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~q~0#1|)) (= |ULTIMATE.start_main_~b~0#1| 0) (<= |ULTIMATE.start_main_~q~0#1| 9223372036854775807) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~s~0#1|)) (<= 9223372036854775808 (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|)) (<= |ULTIMATE.start_main_~s~0#1| 9223372036854775807))' at error location [2023-12-02 18:19:38,600 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 18:19:38,600 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 18:19:38,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2023-12-02 18:19:38,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071602522] [2023-12-02 18:19:38,600 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 18:19:38,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-02 18:19:38,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:19:38,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-02 18:19:38,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=2725, Unknown=0, NotChecked=0, Total=3192 [2023-12-02 18:19:38,603 INFO L87 Difference]: Start difference. First operand 457 states and 615 transitions. Second operand has 11 states, 9 states have (on average 5.666666666666667) internal successors, (51), 10 states have internal predecessors, (51), 3 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-02 18:19:40,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:19:40,684 INFO L93 Difference]: Finished difference Result 531 states and 648 transitions. [2023-12-02 18:19:40,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-02 18:19:40,684 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 5.666666666666667) internal successors, (51), 10 states have internal predecessors, (51), 3 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 72 [2023-12-02 18:19:40,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:19:40,687 INFO L225 Difference]: With dead ends: 531 [2023-12-02 18:19:40,687 INFO L226 Difference]: Without dead ends: 529 [2023-12-02 18:19:40,689 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 105 SyntacticMatches, 6 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1420 ImplicationChecksByTransitivity, 18.1s TimeCoverageRelationStatistics Valid=535, Invalid=3625, Unknown=0, NotChecked=0, Total=4160 [2023-12-02 18:19:40,690 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 490 mSDsluCounter, 433 mSDsCounter, 0 mSdLazyCounter, 1058 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 494 SdHoareTripleChecker+Valid, 511 SdHoareTripleChecker+Invalid, 1087 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1058 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 18:19:40,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [494 Valid, 511 Invalid, 1087 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1058 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-02 18:19:40,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2023-12-02 18:19:40,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 458. [2023-12-02 18:19:40,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 458 states, 366 states have (on average 1.4371584699453552) internal successors, (526), 411 states have internal predecessors, (526), 44 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2023-12-02 18:19:40,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 614 transitions. [2023-12-02 18:19:40,769 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 614 transitions. Word has length 72 [2023-12-02 18:19:40,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:19:40,769 INFO L495 AbstractCegarLoop]: Abstraction has 458 states and 614 transitions. [2023-12-02 18:19:40,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 5.666666666666667) internal successors, (51), 10 states have internal predecessors, (51), 3 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-02 18:19:40,769 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 614 transitions. [2023-12-02 18:19:40,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-02 18:19:40,770 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:19:40,771 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:19:40,776 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2023-12-02 18:19:40,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-12-02 18:19:40,976 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr38ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2023-12-02 18:19:40,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:19:40,976 INFO L85 PathProgramCache]: Analyzing trace with hash 1978708590, now seen corresponding path program 1 times [2023-12-02 18:19:40,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:19:40,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880106790] [2023-12-02 18:19:40,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:19:40,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:19:40,986 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 18:19:40,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [282514740] [2023-12-02 18:19:40,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:19:40,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:19:40,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:19:40,988 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:19:40,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-12-02 18:19:41,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:19:41,043 INFO L262 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-02 18:19:41,045 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:19:41,521 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-02 18:19:41,521 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:19:44,029 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:19:44,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880106790] [2023-12-02 18:19:44,030 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 18:19:44,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [282514740] [2023-12-02 18:19:44,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [282514740] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:19:44,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [332679422] [2023-12-02 18:19:44,032 INFO L159 IcfgInterpreter]: Started Sifa with 58 locations of interest [2023-12-02 18:19:44,032 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 18:19:44,033 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 18:19:44,033 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 18:19:44,033 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 18:21:43,721 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-12-02 18:21:43,722 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 18:21:43,723 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 18:22:07,401 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '19411#(and (<= 0 (+ 9223372036854775808 (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|))) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~q~0#1|)) (= |ULTIMATE.start_main_~b~0#1| 0) (<= (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|) 9223372036854775807) (<= |ULTIMATE.start_main_~q~0#1| 9223372036854775807) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~s~0#1|)) (exists ((|v_ULTIMATE.start_main_~k~0#1_100| Int) (|v_ULTIMATE.start_main_~s~0#1_66| Int)) (and (<= 0 (+ (* |v_ULTIMATE.start_main_~s~0#1_66| |v_ULTIMATE.start_main_~k~0#1_100|) 9223372036854775808)) (<= (* |v_ULTIMATE.start_main_~s~0#1_66| |v_ULTIMATE.start_main_~k~0#1_100|) 9223372036854775807))) (<= |ULTIMATE.start_main_~s~0#1| 9223372036854775807) (<= (+ 9223372036854775809 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) 0))' at error location [2023-12-02 18:22:07,401 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 18:22:07,401 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 18:22:07,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2023-12-02 18:22:07,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476816386] [2023-12-02 18:22:07,402 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 18:22:07,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-02 18:22:07,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:22:07,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-02 18:22:07,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=492, Invalid=3047, Unknown=1, NotChecked=0, Total=3540 [2023-12-02 18:22:07,404 INFO L87 Difference]: Start difference. First operand 458 states and 614 transitions. Second operand has 12 states, 10 states have (on average 5.2) internal successors, (52), 11 states have internal predecessors, (52), 3 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-02 18:22:09,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:22:09,279 INFO L93 Difference]: Finished difference Result 529 states and 645 transitions. [2023-12-02 18:22:09,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-02 18:22:09,279 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 5.2) internal successors, (52), 11 states have internal predecessors, (52), 3 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 73 [2023-12-02 18:22:09,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:22:09,281 INFO L225 Difference]: With dead ends: 529 [2023-12-02 18:22:09,282 INFO L226 Difference]: Without dead ends: 527 [2023-12-02 18:22:09,283 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 105 SyntacticMatches, 6 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1526 ImplicationChecksByTransitivity, 26.5s TimeCoverageRelationStatistics Valid=572, Invalid=3983, Unknown=1, NotChecked=0, Total=4556 [2023-12-02 18:22:09,284 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 479 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 1417 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 483 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 1446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-02 18:22:09,284 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [483 Valid, 589 Invalid, 1446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1417 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-02 18:22:09,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2023-12-02 18:22:09,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 459. [2023-12-02 18:22:09,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 459 states, 367 states have (on average 1.430517711171662) internal successors, (525), 412 states have internal predecessors, (525), 44 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2023-12-02 18:22:09,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 613 transitions. [2023-12-02 18:22:09,339 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 613 transitions. Word has length 73 [2023-12-02 18:22:09,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:22:09,339 INFO L495 AbstractCegarLoop]: Abstraction has 459 states and 613 transitions. [2023-12-02 18:22:09,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 5.2) internal successors, (52), 11 states have internal predecessors, (52), 3 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-02 18:22:09,339 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 613 transitions. [2023-12-02 18:22:09,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-02 18:22:09,340 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:22:09,340 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:22:09,345 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2023-12-02 18:22:09,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-12-02 18:22:09,541 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2023-12-02 18:22:09,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:22:09,541 INFO L85 PathProgramCache]: Analyzing trace with hash 144405787, now seen corresponding path program 1 times [2023-12-02 18:22:09,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:22:09,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094741199] [2023-12-02 18:22:09,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:22:09,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:22:09,548 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 18:22:09,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1040877895] [2023-12-02 18:22:09,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:22:09,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:22:09,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:22:09,549 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:22:09,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-12-02 18:22:09,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:22:09,601 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 18:22:09,603 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:22:09,803 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-02 18:22:09,803 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:22:09,873 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:22:09,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094741199] [2023-12-02 18:22:09,873 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 18:22:09,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1040877895] [2023-12-02 18:22:09,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1040877895] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:22:09,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1380896328] [2023-12-02 18:22:09,875 INFO L159 IcfgInterpreter]: Started Sifa with 55 locations of interest [2023-12-02 18:22:09,875 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 18:22:09,876 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 18:22:09,876 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 18:22:09,876 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 18:24:10,834 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-12-02 18:24:10,835 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 18:24:10,835 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 18:24:23,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1380896328] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:24:23,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 18:24:23,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [39] imperfect sequences [7] total 45 [2023-12-02 18:24:23,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782945758] [2023-12-02 18:24:23,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:24:23,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-12-02 18:24:23,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:24:23,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-12-02 18:24:23,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=416, Invalid=1840, Unknown=0, NotChecked=0, Total=2256 [2023-12-02 18:24:23,163 INFO L87 Difference]: Start difference. First operand 459 states and 613 transitions. Second operand has 40 states, 31 states have (on average 1.4838709677419355) internal successors, (46), 32 states have internal predecessors, (46), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-02 18:24:41,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:24:41,709 INFO L93 Difference]: Finished difference Result 934 states and 1226 transitions. [2023-12-02 18:24:41,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-12-02 18:24:41,709 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 31 states have (on average 1.4838709677419355) internal successors, (46), 32 states have internal predecessors, (46), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 74 [2023-12-02 18:24:41,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:24:41,712 INFO L225 Difference]: With dead ends: 934 [2023-12-02 18:24:41,712 INFO L226 Difference]: Without dead ends: 719 [2023-12-02 18:24:41,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 106 SyntacticMatches, 8 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1551 ImplicationChecksByTransitivity, 22.2s TimeCoverageRelationStatistics Valid=1257, Invalid=4595, Unknown=0, NotChecked=0, Total=5852 [2023-12-02 18:24:41,715 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 868 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 1712 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 872 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 1788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1712 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2023-12-02 18:24:41,715 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [872 Valid, 308 Invalid, 1788 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1712 Invalid, 0 Unknown, 0 Unchecked, 8.5s Time] [2023-12-02 18:24:41,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 719 states. [2023-12-02 18:24:41,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 719 to 496. [2023-12-02 18:24:41,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 496 states, 400 states have (on average 1.4175) internal successors, (567), 445 states have internal predecessors, (567), 48 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2023-12-02 18:24:41,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 663 transitions. [2023-12-02 18:24:41,796 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 663 transitions. Word has length 74 [2023-12-02 18:24:41,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:24:41,796 INFO L495 AbstractCegarLoop]: Abstraction has 496 states and 663 transitions. [2023-12-02 18:24:41,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 31 states have (on average 1.4838709677419355) internal successors, (46), 32 states have internal predecessors, (46), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-02 18:24:41,797 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 663 transitions. [2023-12-02 18:24:41,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-02 18:24:41,798 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:24:41,798 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:24:41,803 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-12-02 18:24:41,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-12-02 18:24:42,000 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr39ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2023-12-02 18:24:42,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:24:42,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1210424320, now seen corresponding path program 1 times [2023-12-02 18:24:42,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:24:42,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334524948] [2023-12-02 18:24:42,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:24:42,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:24:42,008 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 18:24:42,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1159415231] [2023-12-02 18:24:42,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:24:42,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:24:42,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:24:42,009 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:24:42,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-12-02 18:24:42,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:24:42,059 INFO L262 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-02 18:24:42,061 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:24:42,562 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-02 18:24:42,563 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:24:43,280 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:24:43,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334524948] [2023-12-02 18:24:43,280 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 18:24:43,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1159415231] [2023-12-02 18:24:43,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1159415231] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:24:43,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1915016054] [2023-12-02 18:24:43,282 INFO L159 IcfgInterpreter]: Started Sifa with 59 locations of interest [2023-12-02 18:24:43,282 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 18:24:43,282 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 18:24:43,283 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 18:24:43,283 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 18:26:40,089 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-12-02 18:26:40,090 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 18:26:40,091 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 18:26:57,645 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '22897#(and (<= 0 (+ 9223372036854775808 (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|))) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~q~0#1|)) (= |ULTIMATE.start_main_~b~0#1| 0) (exists ((|v_ULTIMATE.start_main_~k~0#1_131| Int) (|v_ULTIMATE.start_main_~s~0#1_75| Int)) (and (<= (* |v_ULTIMATE.start_main_~s~0#1_75| |v_ULTIMATE.start_main_~k~0#1_131|) 9223372036854775807) (<= 0 (+ 9223372036854775808 (* |v_ULTIMATE.start_main_~s~0#1_75| |v_ULTIMATE.start_main_~k~0#1_131|))))) (<= (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|) 9223372036854775807) (<= 9223372036854775808 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) (<= |ULTIMATE.start_main_~q~0#1| 9223372036854775807) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~s~0#1|)) (<= |ULTIMATE.start_main_~s~0#1| 9223372036854775807))' at error location [2023-12-02 18:26:57,646 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 18:26:57,646 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 18:26:57,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2023-12-02 18:26:57,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904932382] [2023-12-02 18:26:57,646 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 18:26:57,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-02 18:26:57,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:26:57,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-02 18:26:57,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=508, Invalid=3152, Unknown=0, NotChecked=0, Total=3660 [2023-12-02 18:26:57,649 INFO L87 Difference]: Start difference. First operand 496 states and 663 transitions. Second operand has 12 states, 10 states have (on average 5.3) internal successors, (53), 11 states have internal predecessors, (53), 3 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-02 18:27:00,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:27:00,198 INFO L93 Difference]: Finished difference Result 571 states and 699 transitions. [2023-12-02 18:27:00,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-02 18:27:00,199 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 5.3) internal successors, (53), 11 states have internal predecessors, (53), 3 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 74 [2023-12-02 18:27:00,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:27:00,201 INFO L225 Difference]: With dead ends: 571 [2023-12-02 18:27:00,201 INFO L226 Difference]: Without dead ends: 569 [2023-12-02 18:27:00,203 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 107 SyntacticMatches, 6 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1715 ImplicationChecksByTransitivity, 18.9s TimeCoverageRelationStatistics Valid=617, Invalid=4213, Unknown=0, NotChecked=0, Total=4830 [2023-12-02 18:27:00,203 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 481 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 1126 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 485 SdHoareTripleChecker+Valid, 528 SdHoareTripleChecker+Invalid, 1157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-02 18:27:00,203 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [485 Valid, 528 Invalid, 1157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 1126 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-02 18:27:00,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2023-12-02 18:27:00,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 497. [2023-12-02 18:27:00,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 497 states, 401 states have (on average 1.4114713216957606) internal successors, (566), 446 states have internal predecessors, (566), 48 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2023-12-02 18:27:00,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 662 transitions. [2023-12-02 18:27:00,279 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 662 transitions. Word has length 74 [2023-12-02 18:27:00,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:27:00,280 INFO L495 AbstractCegarLoop]: Abstraction has 497 states and 662 transitions. [2023-12-02 18:27:00,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 5.3) internal successors, (53), 11 states have internal predecessors, (53), 3 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-02 18:27:00,280 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 662 transitions. [2023-12-02 18:27:00,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-02 18:27:00,281 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:27:00,281 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:27:00,286 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2023-12-02 18:27:00,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-12-02 18:27:00,484 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2023-12-02 18:27:00,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:27:00,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1208980677, now seen corresponding path program 1 times [2023-12-02 18:27:00,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:27:00,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261463689] [2023-12-02 18:27:00,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:27:00,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:27:00,493 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 18:27:00,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [49883882] [2023-12-02 18:27:00,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:27:00,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:27:00,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:27:00,494 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:27:00,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-12-02 18:27:00,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:27:00,558 INFO L262 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-02 18:27:00,561 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:27:00,935 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-02 18:27:00,935 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:27:01,240 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:27:01,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261463689] [2023-12-02 18:27:01,240 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 18:27:01,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [49883882] [2023-12-02 18:27:01,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [49883882] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:27:01,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1608286261] [2023-12-02 18:27:01,241 INFO L159 IcfgInterpreter]: Started Sifa with 55 locations of interest [2023-12-02 18:27:01,242 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 18:27:01,242 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 18:27:01,242 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 18:27:01,242 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 18:28:56,474 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-12-02 18:28:56,475 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 18:28:56,475 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 18:29:13,043 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '24493#(and (<= 0 |ULTIMATE.start_main_~k~0#1|) (= |ULTIMATE.start_main_~d~0#1| 1) (<= |ULTIMATE.start_main_~k~0#1| 1) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~q~0#1|)) (<= (+ (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|) 9223372036854775809) 0) (<= |ULTIMATE.start_main_~q~0#1| 9223372036854775807) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~s~0#1|)) (<= |ULTIMATE.start_main_~s~0#1| 9223372036854775807))' at error location [2023-12-02 18:29:13,043 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 18:29:13,043 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 18:29:13,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2023-12-02 18:29:13,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925085540] [2023-12-02 18:29:13,043 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 18:29:13,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-02 18:29:13,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:29:13,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-02 18:29:13,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=477, Invalid=2715, Unknown=0, NotChecked=0, Total=3192 [2023-12-02 18:29:13,045 INFO L87 Difference]: Start difference. First operand 497 states and 662 transitions. Second operand has 12 states, 10 states have (on average 5.3) internal successors, (53), 12 states have internal predecessors, (53), 3 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-02 18:29:14,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:29:14,507 INFO L93 Difference]: Finished difference Result 581 states and 710 transitions. [2023-12-02 18:29:14,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-02 18:29:14,507 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 5.3) internal successors, (53), 12 states have internal predecessors, (53), 3 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) Word has length 74 [2023-12-02 18:29:14,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:29:14,510 INFO L225 Difference]: With dead ends: 581 [2023-12-02 18:29:14,510 INFO L226 Difference]: Without dead ends: 579 [2023-12-02 18:29:14,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 111 SyntacticMatches, 6 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1506 ImplicationChecksByTransitivity, 17.1s TimeCoverageRelationStatistics Valid=595, Invalid=4097, Unknown=0, NotChecked=0, Total=4692 [2023-12-02 18:29:14,512 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 518 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 1231 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 522 SdHoareTripleChecker+Valid, 588 SdHoareTripleChecker+Invalid, 1267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-02 18:29:14,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [522 Valid, 588 Invalid, 1267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1231 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-02 18:29:14,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2023-12-02 18:29:14,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 500. [2023-12-02 18:29:14,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 404 states have (on average 1.4108910891089108) internal successors, (570), 449 states have internal predecessors, (570), 48 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2023-12-02 18:29:14,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 666 transitions. [2023-12-02 18:29:14,584 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 666 transitions. Word has length 74 [2023-12-02 18:29:14,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:29:14,585 INFO L495 AbstractCegarLoop]: Abstraction has 500 states and 666 transitions. [2023-12-02 18:29:14,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 5.3) internal successors, (53), 12 states have internal predecessors, (53), 3 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-02 18:29:14,585 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 666 transitions. [2023-12-02 18:29:14,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-02 18:29:14,586 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:29:14,586 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:29:14,590 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2023-12-02 18:29:14,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-12-02 18:29:14,786 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2023-12-02 18:29:14,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:29:14,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1131551568, now seen corresponding path program 1 times [2023-12-02 18:29:14,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:29:14,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864226615] [2023-12-02 18:29:14,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:29:14,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:29:14,793 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 18:29:14,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [552902373] [2023-12-02 18:29:14,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:29:14,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:29:14,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:29:14,794 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:29:14,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd52d4dc-27ca-47a6-a545-58035b801ce4/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-12-02 18:29:14,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:29:14,846 INFO L262 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-02 18:29:14,849 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:29:15,318 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-02 18:29:15,318 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:29:17,546 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:29:17,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864226615] [2023-12-02 18:29:17,546 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 18:29:17,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [552902373] [2023-12-02 18:29:17,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [552902373] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:29:17,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [843684114] [2023-12-02 18:29:17,548 INFO L159 IcfgInterpreter]: Started Sifa with 60 locations of interest [2023-12-02 18:29:17,548 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 18:29:17,549 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 18:29:17,549 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 18:29:17,549 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs