./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/geo3-ll_valuebound10.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_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/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_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/geo3-ll_valuebound10.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/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_5dc16f54-8fcb-413e-af60-c6975175cfb1/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 69ffbc0bd4f07a8cc2897410fc013fb815dd984602255263415f4f8a1a4c1714 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 12:22:25,813 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 12:22:25,879 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-12-02 12:22:25,884 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 12:22:25,885 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 12:22:25,909 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 12:22:25,910 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 12:22:25,910 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 12:22:25,911 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 12:22:25,912 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 12:22:25,912 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 12:22:25,913 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 12:22:25,913 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 12:22:25,914 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 12:22:25,914 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 12:22:25,915 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 12:22:25,915 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 12:22:25,916 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 12:22:25,916 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 12:22:25,917 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 12:22:25,917 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 12:22:25,918 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 12:22:25,919 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 12:22:25,920 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 12:22:25,920 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 12:22:25,921 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 12:22:25,927 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 12:22:25,928 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 12:22:25,928 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 12:22:25,929 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 12:22:25,929 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 12:22:25,929 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-12-02 12:22:25,930 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 12:22:25,930 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 12:22:25,931 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 12:22:25,931 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 12:22:25,932 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 12:22:25,932 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 12:22:25,932 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 12:22:25,933 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 12:22:25,933 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 12:22:25,934 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 12:22:25,934 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 12:22:25,934 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 12:22:25,934 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 12:22:25,934 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 12:22:25,934 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 12:22:25,935 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 12:22:25,935 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 12:22:25,935 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_5dc16f54-8fcb-413e-af60-c6975175cfb1/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 69ffbc0bd4f07a8cc2897410fc013fb815dd984602255263415f4f8a1a4c1714 [2023-12-02 12:22:26,149 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 12:22:26,171 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 12:22:26,174 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 12:22:26,175 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 12:22:26,176 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 12:22:26,177 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/nla-digbench-scaling/geo3-ll_valuebound10.c [2023-12-02 12:22:28,929 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 12:22:29,092 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 12:22:29,092 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/sv-benchmarks/c/nla-digbench-scaling/geo3-ll_valuebound10.c [2023-12-02 12:22:29,098 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh/data/043604e85/3b3c3dd9d24b4ca78333dc5feb383767/FLAG771ba4801 [2023-12-02 12:22:29,113 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh/data/043604e85/3b3c3dd9d24b4ca78333dc5feb383767 [2023-12-02 12:22:29,116 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 12:22:29,117 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 12:22:29,118 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 12:22:29,119 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 12:22:29,124 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 12:22:29,125 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:22:29" (1/1) ... [2023-12-02 12:22:29,126 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5df8483 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:22:29, skipping insertion in model container [2023-12-02 12:22:29,126 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:22:29" (1/1) ... [2023-12-02 12:22:29,147 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 12:22:29,301 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 12:22:29,309 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 12:22:29,325 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 12:22:29,337 INFO L206 MainTranslator]: Completed translation [2023-12-02 12:22:29,338 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:22:29 WrapperNode [2023-12-02 12:22:29,338 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 12:22:29,339 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 12:22:29,339 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 12:22:29,340 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 12:22:29,346 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:22:29" (1/1) ... [2023-12-02 12:22:29,352 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:22:29" (1/1) ... [2023-12-02 12:22:29,371 INFO L138 Inliner]: procedures = 14, calls = 13, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 84 [2023-12-02 12:22:29,371 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 12:22:29,372 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 12:22:29,372 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 12:22:29,372 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 12:22:29,379 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:22:29" (1/1) ... [2023-12-02 12:22:29,379 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:22:29" (1/1) ... [2023-12-02 12:22:29,380 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:22:29" (1/1) ... [2023-12-02 12:22:29,381 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:22:29" (1/1) ... [2023-12-02 12:22:29,384 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:22:29" (1/1) ... [2023-12-02 12:22:29,386 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:22:29" (1/1) ... [2023-12-02 12:22:29,388 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:22:29" (1/1) ... [2023-12-02 12:22:29,389 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:22:29" (1/1) ... [2023-12-02 12:22:29,391 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 12:22:29,392 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 12:22:29,392 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 12:22:29,392 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 12:22:29,393 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:22:29" (1/1) ... [2023-12-02 12:22:29,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 12:22:29,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:22:29,427 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 12:22:29,437 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 12:22:29,461 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 12:22:29,461 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-02 12:22:29,461 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-02 12:22:29,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 12:22:29,462 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 12:22:29,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 12:22:29,462 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-02 12:22:29,462 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-02 12:22:29,517 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 12:22:29,519 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 12:22:29,767 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 12:22:29,802 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 12:22:29,802 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 12:22:29,804 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:22:29 BoogieIcfgContainer [2023-12-02 12:22:29,804 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 12:22:29,807 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 12:22:29,807 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 12:22:29,811 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 12:22:29,811 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 12:22:29" (1/3) ... [2023-12-02 12:22:29,812 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49862975 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:22:29, skipping insertion in model container [2023-12-02 12:22:29,812 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:22:29" (2/3) ... [2023-12-02 12:22:29,812 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49862975 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:22:29, skipping insertion in model container [2023-12-02 12:22:29,812 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:22:29" (3/3) ... [2023-12-02 12:22:29,814 INFO L112 eAbstractionObserver]: Analyzing ICFG geo3-ll_valuebound10.c [2023-12-02 12:22:29,831 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 12:22:29,832 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2023-12-02 12:22:29,877 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 12:22:29,883 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;@52c7a34c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 12:22:29,883 INFO L358 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2023-12-02 12:22:29,887 INFO L276 IsEmpty]: Start isEmpty. Operand has 77 states, 39 states have (on average 1.8205128205128205) internal successors, (71), 69 states have internal predecessors, (71), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-02 12:22:29,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-12-02 12:22:29,893 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:22:29,894 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:22:29,894 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-12-02 12:22:29,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:22:29,911 INFO L85 PathProgramCache]: Analyzing trace with hash -694885911, now seen corresponding path program 1 times [2023-12-02 12:22:29,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:22:29,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780262662] [2023-12-02 12:22:29,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:22:29,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:22:30,023 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 12:22:30,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [880234672] [2023-12-02 12:22:30,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:22:30,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:22:30,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:22:30,026 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:22:30,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 12:22:30,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:22:30,097 INFO L262 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-02 12:22:30,102 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:22:30,257 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 12:22:30,258 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:22:30,373 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:22:30,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780262662] [2023-12-02 12:22:30,373 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 12:22:30,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [880234672] [2023-12-02 12:22:30,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [880234672] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 12:22:30,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [795707572] [2023-12-02 12:22:30,397 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2023-12-02 12:22:30,398 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 12:22:30,400 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 12:22:30,405 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 12:22:30,405 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 12:22:31,024 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 12:22:31,026 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 12:22:31,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [795707572] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:22:31,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 12:22:31,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [4] total 13 [2023-12-02 12:22:31,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549640760] [2023-12-02 12:22:31,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:22:31,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-02 12:22:31,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:22:31,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-02 12:22:31,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=155, Unknown=0, NotChecked=0, Total=240 [2023-12-02 12:22:31,568 INFO L87 Difference]: Start difference. First operand has 77 states, 39 states have (on average 1.8205128205128205) internal successors, (71), 69 states have internal predecessors, (71), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 11 states, 6 states have (on average 1.0) internal successors, (6), 6 states have internal predecessors, (6), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 12:22:32,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:22:32,139 INFO L93 Difference]: Finished difference Result 145 states and 158 transitions. [2023-12-02 12:22:32,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-02 12:22:32,142 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 6 states have (on average 1.0) internal successors, (6), 6 states have internal predecessors, (6), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 14 [2023-12-02 12:22:32,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:22:32,149 INFO L225 Difference]: With dead ends: 145 [2023-12-02 12:22:32,149 INFO L226 Difference]: Without dead ends: 105 [2023-12-02 12:22:32,152 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=85, Invalid=155, Unknown=0, NotChecked=0, Total=240 [2023-12-02 12:22:32,156 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 225 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 12:22:32,157 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 16 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 12:22:32,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2023-12-02 12:22:32,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 93. [2023-12-02 12:22:32,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 58 states have (on average 1.5689655172413792) internal successors, (91), 85 states have internal predecessors, (91), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-02 12:22:32,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 101 transitions. [2023-12-02 12:22:32,197 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 101 transitions. Word has length 14 [2023-12-02 12:22:32,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:22:32,199 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 101 transitions. [2023-12-02 12:22:32,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 6 states have (on average 1.0) internal successors, (6), 6 states have internal predecessors, (6), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 12:22:32,199 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 101 transitions. [2023-12-02 12:22:32,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-02 12:22:32,201 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:22:32,201 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:22:32,210 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 12:22:32,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-02 12:22:32,406 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-12-02 12:22:32,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:22:32,406 INFO L85 PathProgramCache]: Analyzing trace with hash -1928715287, now seen corresponding path program 1 times [2023-12-02 12:22:32,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:22:32,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374235947] [2023-12-02 12:22:32,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:22:32,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:22:32,423 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 12:22:32,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [598614756] [2023-12-02 12:22:32,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:22:32,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:22:32,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:22:32,425 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:22:32,426 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 12:22:32,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:22:32,469 INFO L262 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 12:22:32,471 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:22:32,622 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 12:22:32,622 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:22:32,622 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:22:32,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374235947] [2023-12-02 12:22:32,623 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 12:22:32,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [598614756] [2023-12-02 12:22:32,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [598614756] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:22:32,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:22:32,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 12:22:32,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290900933] [2023-12-02 12:22:32,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:22:32,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 12:22:32,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:22:32,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 12:22:32,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 12:22:32,626 INFO L87 Difference]: Start difference. First operand 93 states and 101 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-02 12:22:32,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:22:32,895 INFO L93 Difference]: Finished difference Result 117 states and 120 transitions. [2023-12-02 12:22:32,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 12:22:32,896 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 23 [2023-12-02 12:22:32,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:22:32,898 INFO L225 Difference]: With dead ends: 117 [2023-12-02 12:22:32,898 INFO L226 Difference]: Without dead ends: 115 [2023-12-02 12:22:32,898 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-02 12:22:32,900 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 76 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 12:22:32,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 99 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 12:22:32,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2023-12-02 12:22:32,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 94. [2023-12-02 12:22:32,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 59 states have (on average 1.5423728813559323) internal successors, (91), 86 states have internal predecessors, (91), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-02 12:22:32,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 101 transitions. [2023-12-02 12:22:32,915 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 101 transitions. Word has length 23 [2023-12-02 12:22:32,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:22:32,915 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 101 transitions. [2023-12-02 12:22:32,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-02 12:22:32,916 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 101 transitions. [2023-12-02 12:22:32,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-12-02 12:22:32,917 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:22:32,917 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:22:32,923 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-02 12:22:33,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:22:33,122 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-12-02 12:22:33,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:22:33,123 INFO L85 PathProgramCache]: Analyzing trace with hash 339368314, now seen corresponding path program 1 times [2023-12-02 12:22:33,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:22:33,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128621320] [2023-12-02 12:22:33,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:22:33,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:22:33,137 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 12:22:33,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1423001539] [2023-12-02 12:22:33,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:22:33,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:22:33,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:22:33,139 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:22:33,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-02 12:22:33,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:22:33,188 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 12:22:33,190 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:22:33,330 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 12:22:33,330 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:22:33,331 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:22:33,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128621320] [2023-12-02 12:22:33,331 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 12:22:33,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1423001539] [2023-12-02 12:22:33,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1423001539] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:22:33,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:22:33,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 12:22:33,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454021145] [2023-12-02 12:22:33,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:22:33,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:22:33,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:22:33,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:22:33,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 12:22:33,334 INFO L87 Difference]: Start difference. First operand 94 states and 101 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-02 12:22:33,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:22:33,410 INFO L93 Difference]: Finished difference Result 115 states and 118 transitions. [2023-12-02 12:22:33,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:22:33,410 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 24 [2023-12-02 12:22:33,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:22:33,412 INFO L225 Difference]: With dead ends: 115 [2023-12-02 12:22:33,412 INFO L226 Difference]: Without dead ends: 113 [2023-12-02 12:22:33,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 21 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 12:22:33,414 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 62 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 12:22:33,415 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 106 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 12:22:33,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2023-12-02 12:22:33,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 95. [2023-12-02 12:22:33,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 60 states have (on average 1.5166666666666666) internal successors, (91), 87 states have internal predecessors, (91), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-02 12:22:33,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 101 transitions. [2023-12-02 12:22:33,429 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 101 transitions. Word has length 24 [2023-12-02 12:22:33,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:22:33,429 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 101 transitions. [2023-12-02 12:22:33,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-02 12:22:33,430 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 101 transitions. [2023-12-02 12:22:33,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-12-02 12:22:33,431 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:22:33,431 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:22:33,436 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-02 12:22:33,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:22:33,632 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-12-02 12:22:33,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:22:33,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1930483211, now seen corresponding path program 1 times [2023-12-02 12:22:33,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:22:33,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500242890] [2023-12-02 12:22:33,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:22:33,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:22:33,647 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 12:22:33,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1777913717] [2023-12-02 12:22:33,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:22:33,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:22:33,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:22:33,650 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:22:33,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-02 12:22:33,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:22:33,697 INFO L262 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-02 12:22:33,699 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:22:33,911 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 12:22:33,911 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:22:34,342 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:22:34,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500242890] [2023-12-02 12:22:34,342 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 12:22:34,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1777913717] [2023-12-02 12:22:34,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1777913717] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 12:22:34,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1659895390] [2023-12-02 12:22:34,346 INFO L159 IcfgInterpreter]: Started Sifa with 22 locations of interest [2023-12-02 12:22:34,346 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 12:22:34,346 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 12:22:34,347 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 12:22:34,347 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 12:22:34,776 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 12:22:34,777 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 12:22:35,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1659895390] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:22:35,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 12:22:35,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 16 [2023-12-02 12:22:35,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371179619] [2023-12-02 12:22:35,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:22:35,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-02 12:22:35,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:22:35,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-02 12:22:35,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2023-12-02 12:22:35,816 INFO L87 Difference]: Start difference. First operand 95 states and 101 transitions. Second operand has 12 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 12:22:36,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:22:36,084 INFO L93 Difference]: Finished difference Result 101 states and 104 transitions. [2023-12-02 12:22:36,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-02 12:22:36,085 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 25 [2023-12-02 12:22:36,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:22:36,086 INFO L225 Difference]: With dead ends: 101 [2023-12-02 12:22:36,086 INFO L226 Difference]: Without dead ends: 87 [2023-12-02 12:22:36,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 35 SyntacticMatches, 10 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2023-12-02 12:22:36,088 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 236 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 12:22:36,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 23 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 12:22:36,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2023-12-02 12:22:36,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2023-12-02 12:22:36,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 52 states have (on average 1.5384615384615385) internal successors, (80), 79 states have internal predecessors, (80), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-02 12:22:36,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 90 transitions. [2023-12-02 12:22:36,099 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 90 transitions. Word has length 25 [2023-12-02 12:22:36,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:22:36,107 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 90 transitions. [2023-12-02 12:22:36,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 12:22:36,108 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 90 transitions. [2023-12-02 12:22:36,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-12-02 12:22:36,109 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:22:36,109 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:22:36,118 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-02 12:22:36,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:22:36,324 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-12-02 12:22:36,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:22:36,324 INFO L85 PathProgramCache]: Analyzing trace with hash 2015511663, now seen corresponding path program 1 times [2023-12-02 12:22:36,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:22:36,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746457524] [2023-12-02 12:22:36,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:22:36,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:22:36,335 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 12:22:36,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1955846552] [2023-12-02 12:22:36,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:22:36,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:22:36,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:22:36,336 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:22:36,337 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-02 12:22:36,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:22:36,380 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 12:22:36,381 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:22:36,417 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 12:22:36,417 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:22:36,417 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:22:36,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746457524] [2023-12-02 12:22:36,418 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 12:22:36,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1955846552] [2023-12-02 12:22:36,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1955846552] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:22:36,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:22:36,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:22:36,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325476465] [2023-12-02 12:22:36,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:22:36,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 12:22:36,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:22:36,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 12:22:36,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 12:22:36,420 INFO L87 Difference]: Start difference. First operand 87 states and 90 transitions. Second operand has 3 states, 2 states have (on average 11.5) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-02 12:22:36,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:22:36,541 INFO L93 Difference]: Finished difference Result 87 states and 90 transitions. [2023-12-02 12:22:36,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 12:22:36,541 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 11.5) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 33 [2023-12-02 12:22:36,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:22:36,542 INFO L225 Difference]: With dead ends: 87 [2023-12-02 12:22:36,543 INFO L226 Difference]: Without dead ends: 85 [2023-12-02 12:22:36,543 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 31 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 12:22:36,544 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 36 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 12:22:36,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 44 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 12:22:36,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2023-12-02 12:22:36,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2023-12-02 12:22:36,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 52 states have (on average 1.5) internal successors, (78), 77 states have internal predecessors, (78), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-02 12:22:36,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 88 transitions. [2023-12-02 12:22:36,555 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 88 transitions. Word has length 33 [2023-12-02 12:22:36,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:22:36,555 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 88 transitions. [2023-12-02 12:22:36,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 11.5) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-02 12:22:36,555 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 88 transitions. [2023-12-02 12:22:36,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-02 12:22:36,556 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:22:36,557 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:22:36,561 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-02 12:22:36,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:22:36,757 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-12-02 12:22:36,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:22:36,758 INFO L85 PathProgramCache]: Analyzing trace with hash -1943647802, now seen corresponding path program 1 times [2023-12-02 12:22:36,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:22:36,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238072737] [2023-12-02 12:22:36,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:22:36,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:22:36,768 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 12:22:36,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [420183260] [2023-12-02 12:22:36,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:22:36,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:22:36,768 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:22:36,769 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:22:36,772 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-02 12:22:36,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:22:36,812 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 12:22:36,814 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:22:36,844 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 12:22:36,845 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:22:36,845 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:22:36,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238072737] [2023-12-02 12:22:36,845 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 12:22:36,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [420183260] [2023-12-02 12:22:36,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [420183260] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:22:36,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:22:36,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:22:36,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652024577] [2023-12-02 12:22:36,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:22:36,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 12:22:36,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:22:36,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 12:22:36,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 12:22:36,847 INFO L87 Difference]: Start difference. First operand 85 states and 88 transitions. Second operand has 3 states, 2 states have (on average 12.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-02 12:22:36,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:22:36,961 INFO L93 Difference]: Finished difference Result 85 states and 88 transitions. [2023-12-02 12:22:36,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 12:22:36,961 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 12.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 34 [2023-12-02 12:22:36,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:22:36,962 INFO L225 Difference]: With dead ends: 85 [2023-12-02 12:22:36,962 INFO L226 Difference]: Without dead ends: 83 [2023-12-02 12:22:36,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 32 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 12:22:36,964 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 32 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 12:22:36,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 46 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 12:22:36,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2023-12-02 12:22:36,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2023-12-02 12:22:36,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 52 states have (on average 1.4615384615384615) internal successors, (76), 75 states have internal predecessors, (76), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-02 12:22:36,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 86 transitions. [2023-12-02 12:22:36,974 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 86 transitions. Word has length 34 [2023-12-02 12:22:36,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:22:36,975 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 86 transitions. [2023-12-02 12:22:36,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 12.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-02 12:22:36,975 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 86 transitions. [2023-12-02 12:22:36,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-02 12:22:36,976 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:22:36,976 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:22:36,981 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-02 12:22:37,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:22:37,177 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-12-02 12:22:37,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:22:37,178 INFO L85 PathProgramCache]: Analyzing trace with hash -123539631, now seen corresponding path program 1 times [2023-12-02 12:22:37,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:22:37,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595667456] [2023-12-02 12:22:37,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:22:37,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:22:37,189 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 12:22:37,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [555912249] [2023-12-02 12:22:37,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:22:37,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:22:37,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:22:37,191 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:22:37,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-02 12:22:37,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:22:37,229 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 12:22:37,231 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:22:37,377 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 12:22:37,377 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:22:37,488 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:22:37,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595667456] [2023-12-02 12:22:37,489 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 12:22:37,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [555912249] [2023-12-02 12:22:37,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [555912249] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 12:22:37,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1928493489] [2023-12-02 12:22:37,492 INFO L159 IcfgInterpreter]: Started Sifa with 32 locations of interest [2023-12-02 12:22:37,492 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 12:22:37,492 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 12:22:37,492 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 12:22:37,493 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 12:22:38,133 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 51 for LOIs [2023-12-02 12:22:38,144 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 12:22:38,145 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 12:22:39,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1928493489] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:22:39,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 12:22:39,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [4] total 18 [2023-12-02 12:22:39,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265321564] [2023-12-02 12:22:39,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:22:39,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-02 12:22:39,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:22:39,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-02 12:22:39,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=298, Unknown=0, NotChecked=0, Total=420 [2023-12-02 12:22:39,444 INFO L87 Difference]: Start difference. First operand 83 states and 86 transitions. Second operand has 16 states, 10 states have (on average 2.5) internal successors, (25), 10 states have internal predecessors, (25), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 12:22:39,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:22:39,863 INFO L93 Difference]: Finished difference Result 91 states and 93 transitions. [2023-12-02 12:22:39,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-02 12:22:39,864 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 10 states have (on average 2.5) internal successors, (25), 10 states have internal predecessors, (25), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 35 [2023-12-02 12:22:39,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:22:39,865 INFO L225 Difference]: With dead ends: 91 [2023-12-02 12:22:39,865 INFO L226 Difference]: Without dead ends: 89 [2023-12-02 12:22:39,865 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 61 SyntacticMatches, 13 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=122, Invalid=298, Unknown=0, NotChecked=0, Total=420 [2023-12-02 12:22:39,866 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 170 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 388 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 12:22:39,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 51 Invalid, 392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 388 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 12:22:39,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2023-12-02 12:22:39,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2023-12-02 12:22:39,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 57 states have (on average 1.4210526315789473) internal successors, (81), 80 states have internal predecessors, (81), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-02 12:22:39,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 91 transitions. [2023-12-02 12:22:39,876 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 91 transitions. Word has length 35 [2023-12-02 12:22:39,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:22:39,876 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 91 transitions. [2023-12-02 12:22:39,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 10 states have (on average 2.5) internal successors, (25), 10 states have internal predecessors, (25), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 12:22:39,877 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 91 transitions. [2023-12-02 12:22:39,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-02 12:22:39,878 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:22:39,878 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:22:39,882 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-02 12:22:40,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:22:40,079 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-12-02 12:22:40,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:22:40,079 INFO L85 PathProgramCache]: Analyzing trace with hash 1537501747, now seen corresponding path program 1 times [2023-12-02 12:22:40,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:22:40,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159659256] [2023-12-02 12:22:40,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:22:40,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:22:40,087 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 12:22:40,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [299246341] [2023-12-02 12:22:40,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:22:40,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:22:40,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:22:40,088 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:22:40,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-02 12:22:40,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:22:40,129 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-02 12:22:40,131 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:22:40,245 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 12:22:40,245 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:22:40,375 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 12:22:40,375 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:22:40,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159659256] [2023-12-02 12:22:40,375 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 12:22:40,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [299246341] [2023-12-02 12:22:40,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [299246341] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 12:22:40,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [589935659] [2023-12-02 12:22:40,379 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2023-12-02 12:22:40,379 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 12:22:40,379 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 12:22:40,379 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 12:22:40,380 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 12:22:41,038 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 51 for LOIs [2023-12-02 12:22:41,049 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 12:22:41,050 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 12:22:42,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [589935659] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:22:42,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 12:22:42,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [4, 4] total 21 [2023-12-02 12:22:42,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926376541] [2023-12-02 12:22:42,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:22:42,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-02 12:22:42,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:22:42,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-02 12:22:42,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=322, Unknown=0, NotChecked=0, Total=462 [2023-12-02 12:22:42,515 INFO L87 Difference]: Start difference. First operand 89 states and 91 transitions. Second operand has 17 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 12:22:42,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:22:42,985 INFO L93 Difference]: Finished difference Result 93 states and 95 transitions. [2023-12-02 12:22:42,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-02 12:22:42,985 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 37 [2023-12-02 12:22:42,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:22:42,986 INFO L225 Difference]: With dead ends: 93 [2023-12-02 12:22:42,987 INFO L226 Difference]: Without dead ends: 91 [2023-12-02 12:22:42,987 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 76 SyntacticMatches, 13 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=140, Invalid=322, Unknown=0, NotChecked=0, Total=462 [2023-12-02 12:22:42,988 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 114 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 438 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 12:22:42,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 52 Invalid, 441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 438 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 12:22:42,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2023-12-02 12:22:42,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2023-12-02 12:22:42,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 59 states have (on average 1.4067796610169492) internal successors, (83), 82 states have internal predecessors, (83), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-02 12:22:42,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 93 transitions. [2023-12-02 12:22:42,996 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 93 transitions. Word has length 37 [2023-12-02 12:22:42,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:22:42,997 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 93 transitions. [2023-12-02 12:22:42,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 12:22:42,997 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 93 transitions. [2023-12-02 12:22:42,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-12-02 12:22:42,998 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:22:42,998 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:22:43,002 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-02 12:22:43,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:22:43,199 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-12-02 12:22:43,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:22:43,199 INFO L85 PathProgramCache]: Analyzing trace with hash -2111575956, now seen corresponding path program 1 times [2023-12-02 12:22:43,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:22:43,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99273718] [2023-12-02 12:22:43,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:22:43,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:22:43,209 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 12:22:43,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1203645980] [2023-12-02 12:22:43,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:22:43,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:22:43,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:22:43,210 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:22:43,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-02 12:22:43,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:22:43,255 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-02 12:22:43,257 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:22:43,494 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 12:22:43,494 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:22:43,604 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:22:43,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99273718] [2023-12-02 12:22:43,604 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 12:22:43,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1203645980] [2023-12-02 12:22:43,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1203645980] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 12:22:43,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1116827886] [2023-12-02 12:22:43,607 INFO L159 IcfgInterpreter]: Started Sifa with 35 locations of interest [2023-12-02 12:22:43,607 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 12:22:43,607 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 12:22:43,607 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 12:22:43,608 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 12:22:45,941 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 55 for LOIs [2023-12-02 12:22:45,958 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 12:22:45,959 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 12:22:57,211 WARN L293 SmtUtils]: Spent 8.83s on a formula simplification. DAG size of input: 107 DAG size of output: 45 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 12:23:31,526 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2935#(and (<= 2 |ULTIMATE.start_main_~c~0#1|) (<= 1 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~az~0#1|) (<= (+ 9223372036854775809 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|)) 0) (<= |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~k~0#1|) (<= |ULTIMATE.start_main_~k~0#1| 10) (<= |ULTIMATE.start_main_~a~0#1| 10) (<= |ULTIMATE.start_main_~z~0#1| 10) (<= 0 |ULTIMATE.start_main_~a~0#1|) (exists ((|v_ULTIMATE.start_main_~y~0#1_44| Int) (|v_ULTIMATE.start_main_~x~0#1_72| Int)) (and (<= 0 (+ 9223372036854775808 (* |v_ULTIMATE.start_main_~y~0#1_44| |ULTIMATE.start_main_~z~0#1|))) (= (+ |v_ULTIMATE.start_main_~x~0#1_72| (* |ULTIMATE.start_main_~az~0#1| |v_ULTIMATE.start_main_~y~0#1_44|)) (+ (* |v_ULTIMATE.start_main_~x~0#1_72| |ULTIMATE.start_main_~z~0#1|) |ULTIMATE.start_main_~a~0#1|)) (<= 0 (+ (* |v_ULTIMATE.start_main_~x~0#1_72| |ULTIMATE.start_main_~z~0#1|) 9223372036854775808)) (= |ULTIMATE.start_main_~x~0#1| (+ (* |v_ULTIMATE.start_main_~x~0#1_72| |ULTIMATE.start_main_~z~0#1|) |ULTIMATE.start_main_~a~0#1|)) (= |ULTIMATE.start_main_~y~0#1| (* |v_ULTIMATE.start_main_~y~0#1_44| |ULTIMATE.start_main_~z~0#1|)))) (<= 0 |ULTIMATE.start_main_~z~0#1|) (<= |ULTIMATE.start_main_~az~0#1| 100))' at error location [2023-12-02 12:23:31,527 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 12:23:31,527 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 12:23:31,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2023-12-02 12:23:31,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298466174] [2023-12-02 12:23:31,527 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 12:23:31,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 12:23:31,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:23:31,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 12:23:31,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=286, Invalid=1196, Unknown=0, NotChecked=0, Total=1482 [2023-12-02 12:23:31,530 INFO L87 Difference]: Start difference. First operand 91 states and 93 transitions. Second operand has 7 states, 5 states have (on average 6.2) internal successors, (31), 7 states have internal predecessors, (31), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 12:23:31,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:23:31,721 INFO L93 Difference]: Finished difference Result 91 states and 93 transitions. [2023-12-02 12:23:31,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 12:23:31,722 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 6.2) internal successors, (31), 7 states have internal predecessors, (31), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 40 [2023-12-02 12:23:31,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:23:31,723 INFO L225 Difference]: With dead ends: 91 [2023-12-02 12:23:31,723 INFO L226 Difference]: Without dead ends: 89 [2023-12-02 12:23:31,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 52 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 550 ImplicationChecksByTransitivity, 45.6s TimeCoverageRelationStatistics Valid=295, Invalid=1265, Unknown=0, NotChecked=0, Total=1560 [2023-12-02 12:23:31,726 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 101 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 12:23:31,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 66 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 12:23:31,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2023-12-02 12:23:31,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2023-12-02 12:23:31,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 59 states have (on average 1.3728813559322033) internal successors, (81), 80 states have internal predecessors, (81), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-02 12:23:31,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 91 transitions. [2023-12-02 12:23:31,735 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 91 transitions. Word has length 40 [2023-12-02 12:23:31,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:23:31,736 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 91 transitions. [2023-12-02 12:23:31,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 6.2) internal successors, (31), 7 states have internal predecessors, (31), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 12:23:31,736 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 91 transitions. [2023-12-02 12:23:31,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-12-02 12:23:31,737 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:23:31,737 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:23:31,743 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-12-02 12:23:31,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:23:31,938 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-12-02 12:23:31,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:23:31,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1034345141, now seen corresponding path program 1 times [2023-12-02 12:23:31,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:23:31,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733645130] [2023-12-02 12:23:31,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:23:31,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:23:31,949 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 12:23:31,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1022064132] [2023-12-02 12:23:31,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:23:31,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:23:31,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:23:31,951 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:23:31,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-02 12:23:32,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:23:32,005 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-02 12:23:32,007 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:23:32,309 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 12:23:32,309 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:23:32,489 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:23:32,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733645130] [2023-12-02 12:23:32,490 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 12:23:32,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1022064132] [2023-12-02 12:23:32,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1022064132] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 12:23:32,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [610956732] [2023-12-02 12:23:32,492 INFO L159 IcfgInterpreter]: Started Sifa with 35 locations of interest [2023-12-02 12:23:32,492 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 12:23:32,493 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 12:23:32,493 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 12:23:32,493 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 12:23:34,863 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 55 for LOIs [2023-12-02 12:23:34,884 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 12:23:34,885 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 12:23:47,187 WARN L293 SmtUtils]: Spent 9.68s on a formula simplification. DAG size of input: 105 DAG size of output: 42 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 12:24:05,113 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3335#(and (<= 2 |ULTIMATE.start_main_~c~0#1|) (<= 1 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~az~0#1|) (exists ((|v_ULTIMATE.start_main_~y~0#1_49| Int) (|v_ULTIMATE.start_main_~x~0#1_78| Int)) (and (= |ULTIMATE.start_main_~y~0#1| (* |v_ULTIMATE.start_main_~y~0#1_49| |ULTIMATE.start_main_~z~0#1|)) (= (+ |v_ULTIMATE.start_main_~x~0#1_78| (* |ULTIMATE.start_main_~az~0#1| |v_ULTIMATE.start_main_~y~0#1_49|)) (+ |ULTIMATE.start_main_~a~0#1| (* |v_ULTIMATE.start_main_~x~0#1_78| |ULTIMATE.start_main_~z~0#1|))) (<= (* |v_ULTIMATE.start_main_~y~0#1_49| |ULTIMATE.start_main_~z~0#1|) 9223372036854775807) (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~a~0#1| (* |v_ULTIMATE.start_main_~x~0#1_78| |ULTIMATE.start_main_~z~0#1|))) (<= (+ |ULTIMATE.start_main_~a~0#1| (* |v_ULTIMATE.start_main_~x~0#1_78| |ULTIMATE.start_main_~z~0#1|)) 9223372036854775807))) (<= 9223372036854775808 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|)) (<= |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~k~0#1|) (<= |ULTIMATE.start_main_~k~0#1| 10) (<= |ULTIMATE.start_main_~a~0#1| 10) (<= |ULTIMATE.start_main_~z~0#1| 10) (<= 0 |ULTIMATE.start_main_~a~0#1|) (<= 0 |ULTIMATE.start_main_~z~0#1|) (<= |ULTIMATE.start_main_~az~0#1| 100))' at error location [2023-12-02 12:24:05,113 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 12:24:05,114 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 12:24:05,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2023-12-02 12:24:05,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332522136] [2023-12-02 12:24:05,114 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 12:24:05,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 12:24:05,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:24:05,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 12:24:05,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=284, Invalid=1198, Unknown=0, NotChecked=0, Total=1482 [2023-12-02 12:24:05,117 INFO L87 Difference]: Start difference. First operand 89 states and 91 transitions. Second operand has 7 states, 5 states have (on average 6.4) internal successors, (32), 7 states have internal predecessors, (32), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 12:24:05,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:24:05,468 INFO L93 Difference]: Finished difference Result 138 states and 141 transitions. [2023-12-02 12:24:05,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 12:24:05,469 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 6.4) internal successors, (32), 7 states have internal predecessors, (32), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 41 [2023-12-02 12:24:05,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:24:05,470 INFO L225 Difference]: With dead ends: 138 [2023-12-02 12:24:05,470 INFO L226 Difference]: Without dead ends: 136 [2023-12-02 12:24:05,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 55 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 561 ImplicationChecksByTransitivity, 30.4s TimeCoverageRelationStatistics Valid=293, Invalid=1267, Unknown=0, NotChecked=0, Total=1560 [2023-12-02 12:24:05,472 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 144 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 12:24:05,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 81 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 12:24:05,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2023-12-02 12:24:05,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 108. [2023-12-02 12:24:05,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 77 states have (on average 1.4285714285714286) internal successors, (110), 98 states have internal predecessors, (110), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-02 12:24:05,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 122 transitions. [2023-12-02 12:24:05,481 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 122 transitions. Word has length 41 [2023-12-02 12:24:05,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:24:05,482 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 122 transitions. [2023-12-02 12:24:05,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 6.4) internal successors, (32), 7 states have internal predecessors, (32), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 12:24:05,482 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 122 transitions. [2023-12-02 12:24:05,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-12-02 12:24:05,483 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:24:05,483 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:24:05,488 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-12-02 12:24:05,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:24:05,684 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-12-02 12:24:05,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:24:05,684 INFO L85 PathProgramCache]: Analyzing trace with hash -1999928242, now seen corresponding path program 1 times [2023-12-02 12:24:05,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:24:05,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449247311] [2023-12-02 12:24:05,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:24:05,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:24:05,697 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 12:24:05,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [319235071] [2023-12-02 12:24:05,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:24:05,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:24:05,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:24:05,698 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:24:05,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-02 12:24:05,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:24:05,747 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 12:24:05,749 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:24:05,879 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 12:24:05,879 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:24:06,074 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:24:06,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449247311] [2023-12-02 12:24:06,074 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 12:24:06,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [319235071] [2023-12-02 12:24:06,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [319235071] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 12:24:06,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1104836726] [2023-12-02 12:24:06,077 INFO L159 IcfgInterpreter]: Started Sifa with 35 locations of interest [2023-12-02 12:24:06,077 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 12:24:06,078 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 12:24:06,078 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 12:24:06,078 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 12:24:08,406 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 55 for LOIs [2023-12-02 12:24:08,429 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 12:24:08,431 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 12:24:37,550 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3811#(and (<= 0 |ULTIMATE.start_main_~k~0#1|) (<= 1 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~az~0#1|) (<= 1 |ULTIMATE.start_main_~c~0#1|) (<= |ULTIMATE.start_main_~c~0#1| 10) (<= (+ 9223372036854775809 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|)) |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~k~0#1| 10) (<= |ULTIMATE.start_main_~a~0#1| 10) (<= |ULTIMATE.start_main_~z~0#1| 10) (<= 0 |ULTIMATE.start_main_~a~0#1|) (<= 0 |ULTIMATE.start_main_~z~0#1|) (<= |ULTIMATE.start_main_~az~0#1| 100))' at error location [2023-12-02 12:24:37,550 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 12:24:37,550 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 12:24:37,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2023-12-02 12:24:37,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964589408] [2023-12-02 12:24:37,551 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 12:24:37,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 12:24:37,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:24:37,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 12:24:37,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=299, Invalid=1183, Unknown=0, NotChecked=0, Total=1482 [2023-12-02 12:24:37,553 INFO L87 Difference]: Start difference. First operand 108 states and 122 transitions. Second operand has 6 states, 4 states have (on average 8.25) internal successors, (33), 6 states have internal predecessors, (33), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-02 12:24:37,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:24:37,740 INFO L93 Difference]: Finished difference Result 108 states and 122 transitions. [2023-12-02 12:24:37,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 12:24:37,741 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 8.25) internal successors, (33), 6 states have internal predecessors, (33), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 42 [2023-12-02 12:24:37,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:24:37,742 INFO L225 Difference]: With dead ends: 108 [2023-12-02 12:24:37,742 INFO L226 Difference]: Without dead ends: 106 [2023-12-02 12:24:37,743 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 58 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 564 ImplicationChecksByTransitivity, 29.2s TimeCoverageRelationStatistics Valid=299, Invalid=1183, Unknown=0, NotChecked=0, Total=1482 [2023-12-02 12:24:37,744 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 46 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 12:24:37,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 86 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 12:24:37,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2023-12-02 12:24:37,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2023-12-02 12:24:37,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 77 states have (on average 1.3896103896103895) internal successors, (107), 96 states have internal predecessors, (107), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-02 12:24:37,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 119 transitions. [2023-12-02 12:24:37,753 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 119 transitions. Word has length 42 [2023-12-02 12:24:37,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:24:37,753 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 119 transitions. [2023-12-02 12:24:37,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 8.25) internal successors, (33), 6 states have internal predecessors, (33), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-02 12:24:37,754 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 119 transitions. [2023-12-02 12:24:37,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-12-02 12:24:37,754 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:24:37,755 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:24:37,760 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-12-02 12:24:37,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:24:37,956 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-12-02 12:24:37,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:24:37,956 INFO L85 PathProgramCache]: Analyzing trace with hash -1868233299, now seen corresponding path program 1 times [2023-12-02 12:24:37,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:24:37,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111539485] [2023-12-02 12:24:37,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:24:37,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:24:37,964 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 12:24:37,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1591939654] [2023-12-02 12:24:37,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:24:37,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:24:37,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:24:37,966 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:24:37,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-02 12:24:38,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:24:38,019 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-02 12:24:38,021 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:24:38,355 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 12:24:38,356 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:24:38,627 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:24:38,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111539485] [2023-12-02 12:24:38,627 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 12:24:38,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1591939654] [2023-12-02 12:24:38,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1591939654] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 12:24:38,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1920514729] [2023-12-02 12:24:38,630 INFO L159 IcfgInterpreter]: Started Sifa with 35 locations of interest [2023-12-02 12:24:38,631 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 12:24:38,631 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 12:24:38,631 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 12:24:38,631 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 12:24:40,923 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 55 for LOIs [2023-12-02 12:24:40,945 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 12:24:40,946 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 12:25:08,950 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4261#(and (<= 0 |ULTIMATE.start_main_~k~0#1|) (<= 1 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~az~0#1|) (<= 1 |ULTIMATE.start_main_~c~0#1|) (<= |ULTIMATE.start_main_~k~0#1| 10) (<= |ULTIMATE.start_main_~a~0#1| 10) (<= |ULTIMATE.start_main_~z~0#1| 10) (<= 0 |ULTIMATE.start_main_~a~0#1|) (<= (+ 9223372036854775808 |ULTIMATE.start_main_~x~0#1|) (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|)) (<= 0 |ULTIMATE.start_main_~z~0#1|) (<= |ULTIMATE.start_main_~az~0#1| 100))' at error location [2023-12-02 12:25:08,950 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 12:25:08,950 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 12:25:08,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2023-12-02 12:25:08,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766492162] [2023-12-02 12:25:08,950 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 12:25:08,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 12:25:08,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:25:08,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 12:25:08,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=347, Invalid=1292, Unknown=1, NotChecked=0, Total=1640 [2023-12-02 12:25:08,952 INFO L87 Difference]: Start difference. First operand 106 states and 119 transitions. Second operand has 8 states, 6 states have (on average 5.666666666666667) internal successors, (34), 8 states have internal predecessors, (34), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 12:25:09,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:25:09,141 INFO L93 Difference]: Finished difference Result 106 states and 119 transitions. [2023-12-02 12:25:09,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 12:25:09,141 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 5.666666666666667) internal successors, (34), 8 states have internal predecessors, (34), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 43 [2023-12-02 12:25:09,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:25:09,142 INFO L225 Difference]: With dead ends: 106 [2023-12-02 12:25:09,142 INFO L226 Difference]: Without dead ends: 102 [2023-12-02 12:25:09,143 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 59 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 702 ImplicationChecksByTransitivity, 28.2s TimeCoverageRelationStatistics Valid=368, Invalid=1437, Unknown=1, NotChecked=0, Total=1806 [2023-12-02 12:25:09,143 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 99 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 12:25:09,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 69 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 12:25:09,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2023-12-02 12:25:09,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2023-12-02 12:25:09,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 77 states have (on average 1.3116883116883118) internal successors, (101), 92 states have internal predecessors, (101), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-02 12:25:09,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 113 transitions. [2023-12-02 12:25:09,151 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 113 transitions. Word has length 43 [2023-12-02 12:25:09,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:25:09,151 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 113 transitions. [2023-12-02 12:25:09,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 5.666666666666667) internal successors, (34), 8 states have internal predecessors, (34), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 12:25:09,152 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 113 transitions. [2023-12-02 12:25:09,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-12-02 12:25:09,152 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:25:09,152 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:25:09,157 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-12-02 12:25:09,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-02 12:25:09,354 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-12-02 12:25:09,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:25:09,354 INFO L85 PathProgramCache]: Analyzing trace with hash -2080657360, now seen corresponding path program 1 times [2023-12-02 12:25:09,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:25:09,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129412046] [2023-12-02 12:25:09,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:25:09,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:25:09,362 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 12:25:09,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [14190975] [2023-12-02 12:25:09,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:25:09,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:25:09,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:25:09,363 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:25:09,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-02 12:25:09,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:25:09,402 INFO L262 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 12:25:09,403 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:25:09,479 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-02 12:25:09,480 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:25:09,604 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:25:09,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129412046] [2023-12-02 12:25:09,605 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 12:25:09,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [14190975] [2023-12-02 12:25:09,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [14190975] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 12:25:09,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [297132761] [2023-12-02 12:25:09,607 INFO L159 IcfgInterpreter]: Started Sifa with 35 locations of interest [2023-12-02 12:25:09,607 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 12:25:09,607 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 12:25:09,607 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 12:25:09,608 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 12:25:11,524 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 55 for LOIs [2023-12-02 12:25:11,541 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 12:25:11,542 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 12:25:40,658 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4711#(and (<= 0 |ULTIMATE.start_main_~k~0#1|) (<= 1 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~az~0#1|) (<= (+ 9223372036854775809 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|) |ULTIMATE.start_main_~a~0#1|) |ULTIMATE.start_main_~x~0#1|) (<= 1 |ULTIMATE.start_main_~c~0#1|) (<= |ULTIMATE.start_main_~k~0#1| 10) (<= |ULTIMATE.start_main_~a~0#1| 10) (<= |ULTIMATE.start_main_~z~0#1| 10) (<= 0 |ULTIMATE.start_main_~a~0#1|) (<= 0 |ULTIMATE.start_main_~z~0#1|) (<= |ULTIMATE.start_main_~az~0#1| 100))' at error location [2023-12-02 12:25:40,658 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 12:25:40,658 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 12:25:40,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2023-12-02 12:25:40,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781186316] [2023-12-02 12:25:40,659 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 12:25:40,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 12:25:40,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:25:40,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 12:25:40,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=284, Invalid=1047, Unknown=1, NotChecked=0, Total=1332 [2023-12-02 12:25:40,660 INFO L87 Difference]: Start difference. First operand 102 states and 113 transitions. Second operand has 5 states, 3 states have (on average 10.666666666666666) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-02 12:25:40,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:25:40,733 INFO L93 Difference]: Finished difference Result 102 states and 113 transitions. [2023-12-02 12:25:40,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 12:25:40,733 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 10.666666666666666) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 44 [2023-12-02 12:25:40,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:25:40,734 INFO L225 Difference]: With dead ends: 102 [2023-12-02 12:25:40,734 INFO L226 Difference]: Without dead ends: 100 [2023-12-02 12:25:40,735 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 66 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 480 ImplicationChecksByTransitivity, 29.2s TimeCoverageRelationStatistics Valid=284, Invalid=1047, Unknown=1, NotChecked=0, Total=1332 [2023-12-02 12:25:40,736 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 57 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 12:25:40,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 63 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 12:25:40,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2023-12-02 12:25:40,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2023-12-02 12:25:40,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 77 states have (on average 1.2727272727272727) internal successors, (98), 90 states have internal predecessors, (98), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-02 12:25:40,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 110 transitions. [2023-12-02 12:25:40,743 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 110 transitions. Word has length 44 [2023-12-02 12:25:40,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:25:40,744 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 110 transitions. [2023-12-02 12:25:40,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 10.666666666666666) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-02 12:25:40,744 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 110 transitions. [2023-12-02 12:25:40,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-12-02 12:25:40,745 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:25:40,745 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:25:40,750 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-12-02 12:25:40,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:25:40,945 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-12-02 12:25:40,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:25:40,946 INFO L85 PathProgramCache]: Analyzing trace with hash 1943038994, now seen corresponding path program 1 times [2023-12-02 12:25:40,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:25:40,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451297647] [2023-12-02 12:25:40,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:25:40,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:25:40,953 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 12:25:40,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [838543999] [2023-12-02 12:25:40,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:25:40,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:25:40,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:25:40,955 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:25:40,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-02 12:25:40,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:25:40,997 INFO L262 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-02 12:25:40,999 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:25:41,411 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 12:25:41,411 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:25:41,506 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:25:41,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451297647] [2023-12-02 12:25:41,506 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 12:25:41,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [838543999] [2023-12-02 12:25:41,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [838543999] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 12:25:41,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1952450385] [2023-12-02 12:25:41,508 INFO L159 IcfgInterpreter]: Started Sifa with 35 locations of interest [2023-12-02 12:25:41,508 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 12:25:41,508 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 12:25:41,509 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 12:25:41,509 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 12:25:43,406 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 55 for LOIs [2023-12-02 12:25:43,423 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 12:25:43,424 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 12:26:08,172 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5166#(and (<= 0 |ULTIMATE.start_main_~k~0#1|) (<= 1 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~az~0#1|) (<= (+ (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|) |ULTIMATE.start_main_~a~0#1|) (+ 9223372036854775807 |ULTIMATE.start_main_~x~0#1|)) (<= 1 |ULTIMATE.start_main_~c~0#1|) (<= |ULTIMATE.start_main_~k~0#1| 10) (<= |ULTIMATE.start_main_~a~0#1| 10) (<= |ULTIMATE.start_main_~z~0#1| 10) (<= 0 |ULTIMATE.start_main_~a~0#1|) (<= (+ 9223372036854775809 (* |ULTIMATE.start_main_~az~0#1| |ULTIMATE.start_main_~y~0#1|)) 0) (<= 0 |ULTIMATE.start_main_~z~0#1|) (<= |ULTIMATE.start_main_~az~0#1| 100) (<= |ULTIMATE.start_main_~x~0#1| (+ 9223372036854775808 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|) |ULTIMATE.start_main_~a~0#1|)))' at error location [2023-12-02 12:26:08,172 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 12:26:08,172 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 12:26:08,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2023-12-02 12:26:08,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566593650] [2023-12-02 12:26:08,172 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 12:26:08,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 12:26:08,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:26:08,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 12:26:08,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=295, Invalid=1265, Unknown=0, NotChecked=0, Total=1560 [2023-12-02 12:26:08,174 INFO L87 Difference]: Start difference. First operand 100 states and 110 transitions. Second operand has 8 states, 6 states have (on average 6.166666666666667) internal successors, (37), 8 states have internal predecessors, (37), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 12:26:08,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:26:08,420 INFO L93 Difference]: Finished difference Result 100 states and 110 transitions. [2023-12-02 12:26:08,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 12:26:08,420 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 6.166666666666667) internal successors, (37), 8 states have internal predecessors, (37), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 46 [2023-12-02 12:26:08,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:26:08,421 INFO L225 Difference]: With dead ends: 100 [2023-12-02 12:26:08,421 INFO L226 Difference]: Without dead ends: 97 [2023-12-02 12:26:08,422 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 69 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 564 ImplicationChecksByTransitivity, 24.9s TimeCoverageRelationStatistics Valid=312, Invalid=1410, Unknown=0, NotChecked=0, Total=1722 [2023-12-02 12:26:08,422 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 157 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 12:26:08,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 56 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 12:26:08,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2023-12-02 12:26:08,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2023-12-02 12:26:08,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 77 states have (on average 1.2207792207792207) internal successors, (94), 87 states have internal predecessors, (94), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-02 12:26:08,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 106 transitions. [2023-12-02 12:26:08,434 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 106 transitions. Word has length 46 [2023-12-02 12:26:08,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:26:08,434 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 106 transitions. [2023-12-02 12:26:08,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 6.166666666666667) internal successors, (37), 8 states have internal predecessors, (37), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 12:26:08,434 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 106 transitions. [2023-12-02 12:26:08,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-12-02 12:26:08,435 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:26:08,435 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:26:08,439 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-12-02 12:26:08,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-12-02 12:26:08,636 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-12-02 12:26:08,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:26:08,636 INFO L85 PathProgramCache]: Analyzing trace with hash 104666737, now seen corresponding path program 1 times [2023-12-02 12:26:08,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:26:08,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523341145] [2023-12-02 12:26:08,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:26:08,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:26:08,643 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 12:26:08,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1270663618] [2023-12-02 12:26:08,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:26:08,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:26:08,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:26:08,645 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:26:08,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-02 12:26:08,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:26:08,696 INFO L262 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-02 12:26:08,697 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:26:10,747 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 12:26:10,747 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:26:11,099 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:26:11,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523341145] [2023-12-02 12:26:11,099 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 12:26:11,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1270663618] [2023-12-02 12:26:11,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1270663618] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 12:26:11,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [40152426] [2023-12-02 12:26:11,101 INFO L159 IcfgInterpreter]: Started Sifa with 35 locations of interest [2023-12-02 12:26:11,101 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 12:26:11,102 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 12:26:11,102 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 12:26:11,102 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 12:26:12,974 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 55 for LOIs [2023-12-02 12:26:12,990 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 12:26:12,991 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 12:26:51,651 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5630#(and (<= 0 |ULTIMATE.start_main_~k~0#1|) (<= 1 |#StackHeapBarrier|) (<= 9223372036854775808 (* |ULTIMATE.start_main_~az~0#1| |ULTIMATE.start_main_~y~0#1|)) (<= 0 |ULTIMATE.start_main_~az~0#1|) (<= (+ (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|) |ULTIMATE.start_main_~a~0#1|) (+ 9223372036854775807 |ULTIMATE.start_main_~x~0#1|)) (<= 1 |ULTIMATE.start_main_~c~0#1|) (<= |ULTIMATE.start_main_~k~0#1| 10) (<= |ULTIMATE.start_main_~a~0#1| 10) (<= |ULTIMATE.start_main_~z~0#1| 10) (<= 0 |ULTIMATE.start_main_~a~0#1|) (<= 0 |ULTIMATE.start_main_~z~0#1|) (<= |ULTIMATE.start_main_~az~0#1| 100) (<= |ULTIMATE.start_main_~x~0#1| (+ 9223372036854775808 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|) |ULTIMATE.start_main_~a~0#1|)))' at error location [2023-12-02 12:26:51,651 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 12:26:51,651 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 12:26:51,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2023-12-02 12:26:51,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264432963] [2023-12-02 12:26:51,652 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 12:26:51,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-02 12:26:51,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:26:51,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-02 12:26:51,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=342, Invalid=1548, Unknown=2, NotChecked=0, Total=1892 [2023-12-02 12:26:51,654 INFO L87 Difference]: Start difference. First operand 97 states and 106 transitions. Second operand has 10 states, 8 states have (on average 4.75) internal successors, (38), 10 states have internal predecessors, (38), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 12:26:52,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:26:52,382 INFO L93 Difference]: Finished difference Result 118 states and 121 transitions. [2023-12-02 12:26:52,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-02 12:26:52,383 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 4.75) internal successors, (38), 10 states have internal predecessors, (38), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 47 [2023-12-02 12:26:52,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:26:52,383 INFO L225 Difference]: With dead ends: 118 [2023-12-02 12:26:52,383 INFO L226 Difference]: Without dead ends: 115 [2023-12-02 12:26:52,384 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 68 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 677 ImplicationChecksByTransitivity, 40.6s TimeCoverageRelationStatistics Valid=361, Invalid=1707, Unknown=2, NotChecked=0, Total=2070 [2023-12-02 12:26:52,385 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 216 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-02 12:26:52,385 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 90 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 306 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-02 12:26:52,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2023-12-02 12:26:52,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 107. [2023-12-02 12:26:52,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 87 states have (on average 1.1839080459770115) internal successors, (103), 97 states have internal predecessors, (103), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-02 12:26:52,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 115 transitions. [2023-12-02 12:26:52,396 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 115 transitions. Word has length 47 [2023-12-02 12:26:52,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:26:52,396 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 115 transitions. [2023-12-02 12:26:52,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 4.75) internal successors, (38), 10 states have internal predecessors, (38), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 12:26:52,397 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 115 transitions. [2023-12-02 12:26:52,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-12-02 12:26:52,397 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:26:52,397 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:26:52,402 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-12-02 12:26:52,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:26:52,598 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-12-02 12:26:52,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:26:52,598 INFO L85 PathProgramCache]: Analyzing trace with hash -1050298380, now seen corresponding path program 1 times [2023-12-02 12:26:52,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:26:52,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439412122] [2023-12-02 12:26:52,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:26:52,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:26:52,605 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 12:26:52,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [892234505] [2023-12-02 12:26:52,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:26:52,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:26:52,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:26:52,606 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:26:52,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-02 12:26:52,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:26:52,647 INFO L262 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-02 12:26:52,649 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:26:53,160 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 12:26:53,160 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:26:54,434 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:26:54,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439412122] [2023-12-02 12:26:54,434 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 12:26:54,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [892234505] [2023-12-02 12:26:54,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [892234505] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 12:26:54,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [712804193] [2023-12-02 12:26:54,436 INFO L159 IcfgInterpreter]: Started Sifa with 35 locations of interest [2023-12-02 12:26:54,436 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 12:26:54,437 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 12:26:54,437 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 12:26:54,437 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 12:26:56,329 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 55 for LOIs [2023-12-02 12:26:56,346 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 12:26:56,347 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 12:27:32,224 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6131#(and (<= 0 |ULTIMATE.start_main_~k~0#1|) (<= (+ 9223372036854775809 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|) |ULTIMATE.start_main_~a~0#1|) (+ |ULTIMATE.start_main_~x~0#1| (* |ULTIMATE.start_main_~az~0#1| |ULTIMATE.start_main_~y~0#1|))) (<= 1 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~az~0#1|) (<= (* |ULTIMATE.start_main_~az~0#1| |ULTIMATE.start_main_~y~0#1|) 9223372036854775807) (<= 1 |ULTIMATE.start_main_~c~0#1|) (<= |ULTIMATE.start_main_~k~0#1| 10) (<= |ULTIMATE.start_main_~a~0#1| 10) (<= |ULTIMATE.start_main_~z~0#1| 10) (<= 0 |ULTIMATE.start_main_~a~0#1|) (<= 0 |ULTIMATE.start_main_~z~0#1|) (<= |ULTIMATE.start_main_~az~0#1| 100) (<= |ULTIMATE.start_main_~x~0#1| (+ 9223372036854775808 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|) |ULTIMATE.start_main_~a~0#1|)))' at error location [2023-12-02 12:27:32,224 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 12:27:32,224 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 12:27:32,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2023-12-02 12:27:32,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548907582] [2023-12-02 12:27:32,225 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 12:27:32,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-02 12:27:32,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:27:32,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-02 12:27:32,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=374, Invalid=1788, Unknown=0, NotChecked=0, Total=2162 [2023-12-02 12:27:32,226 INFO L87 Difference]: Start difference. First operand 107 states and 115 transitions. Second operand has 11 states, 8 states have (on average 4.875) internal successors, (39), 11 states have internal predecessors, (39), 4 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 12:27:32,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:27:32,730 INFO L93 Difference]: Finished difference Result 115 states and 118 transitions. [2023-12-02 12:27:32,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-02 12:27:32,731 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 4.875) internal successors, (39), 11 states have internal predecessors, (39), 4 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 48 [2023-12-02 12:27:32,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:27:32,732 INFO L225 Difference]: With dead ends: 115 [2023-12-02 12:27:32,732 INFO L226 Difference]: Without dead ends: 101 [2023-12-02 12:27:32,732 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 68 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 785 ImplicationChecksByTransitivity, 36.9s TimeCoverageRelationStatistics Valid=374, Invalid=1788, Unknown=0, NotChecked=0, Total=2162 [2023-12-02 12:27:32,733 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 143 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 12:27:32,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 101 Invalid, 364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 12:27:32,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2023-12-02 12:27:32,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 99. [2023-12-02 12:27:32,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 79 states have (on average 1.1645569620253164) internal successors, (92), 89 states have internal predecessors, (92), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-02 12:27:32,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 104 transitions. [2023-12-02 12:27:32,741 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 104 transitions. Word has length 48 [2023-12-02 12:27:32,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:27:32,741 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 104 transitions. [2023-12-02 12:27:32,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 4.875) internal successors, (39), 11 states have internal predecessors, (39), 4 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 12:27:32,741 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 104 transitions. [2023-12-02 12:27:32,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-12-02 12:27:32,742 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:27:32,742 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:27:32,746 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-12-02 12:27:32,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:27:32,943 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-12-02 12:27:32,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:27:32,943 INFO L85 PathProgramCache]: Analyzing trace with hash -485853002, now seen corresponding path program 1 times [2023-12-02 12:27:32,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:27:32,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645368584] [2023-12-02 12:27:32,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:27:32,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:27:32,949 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 12:27:32,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1354104903] [2023-12-02 12:27:32,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:27:32,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:27:32,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:27:32,950 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:27:32,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-02 12:27:32,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:27:32,994 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 12:27:32,995 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:27:33,033 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-02 12:27:33,033 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:27:33,033 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:27:33,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645368584] [2023-12-02 12:27:33,034 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 12:27:33,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1354104903] [2023-12-02 12:27:33,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1354104903] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:27:33,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:27:33,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 12:27:33,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067885603] [2023-12-02 12:27:33,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:27:33,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:27:33,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:27:33,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:27:33,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 12:27:33,035 INFO L87 Difference]: Start difference. First operand 99 states and 104 transitions. Second operand has 4 states, 3 states have (on average 13.666666666666666) internal successors, (41), 4 states have internal predecessors, (41), 3 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-12-02 12:27:33,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:27:33,057 INFO L93 Difference]: Finished difference Result 99 states and 104 transitions. [2023-12-02 12:27:33,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:27:33,058 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 13.666666666666666) internal successors, (41), 4 states have internal predecessors, (41), 3 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 54 [2023-12-02 12:27:33,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:27:33,059 INFO L225 Difference]: With dead ends: 99 [2023-12-02 12:27:33,059 INFO L226 Difference]: Without dead ends: 98 [2023-12-02 12:27:33,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 12:27:33,059 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 41 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:27:33,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 84 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 12:27:33,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2023-12-02 12:27:33,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2023-12-02 12:27:33,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 79 states have (on average 1.139240506329114) internal successors, (90), 88 states have internal predecessors, (90), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-02 12:27:33,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 102 transitions. [2023-12-02 12:27:33,067 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 102 transitions. Word has length 54 [2023-12-02 12:27:33,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:27:33,067 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 102 transitions. [2023-12-02 12:27:33,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 13.666666666666666) internal successors, (41), 4 states have internal predecessors, (41), 3 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-12-02 12:27:33,068 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 102 transitions. [2023-12-02 12:27:33,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-02 12:27:33,068 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:27:33,068 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:27:33,074 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-12-02 12:27:33,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-02 12:27:33,269 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-12-02 12:27:33,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:27:33,269 INFO L85 PathProgramCache]: Analyzing trace with hash 2118426203, now seen corresponding path program 1 times [2023-12-02 12:27:33,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:27:33,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735600327] [2023-12-02 12:27:33,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:27:33,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:27:33,276 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 12:27:33,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [237897997] [2023-12-02 12:27:33,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:27:33,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:27:33,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:27:33,278 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:27:33,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-02 12:27:33,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:27:33,318 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 12:27:33,319 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:27:33,359 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-02 12:27:33,359 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:27:33,403 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-02 12:27:33,403 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:27:33,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735600327] [2023-12-02 12:27:33,403 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 12:27:33,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [237897997] [2023-12-02 12:27:33,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [237897997] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 12:27:33,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [586538415] [2023-12-02 12:27:33,405 INFO L159 IcfgInterpreter]: Started Sifa with 35 locations of interest [2023-12-02 12:27:33,405 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 12:27:33,405 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 12:27:33,406 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 12:27:33,406 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 12:27:35,349 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 55 for LOIs [2023-12-02 12:27:35,366 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 12:27:35,367 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 12:28:02,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [586538415] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:28:02,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 12:28:02,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [3, 3] total 34 [2023-12-02 12:28:02,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401376628] [2023-12-02 12:28:02,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:28:02,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-02 12:28:02,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:28:02,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-02 12:28:02,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=237, Invalid=952, Unknown=1, NotChecked=0, Total=1190 [2023-12-02 12:28:02,368 INFO L87 Difference]: Start difference. First operand 98 states and 102 transitions. Second operand has 31 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 24 states have internal predecessors, (29), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 12:28:04,161 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 12:28:18,002 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 12:28:20,242 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 12:28:23,916 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 12:28:25,236 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 12:28:26,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:28:26,915 INFO L93 Difference]: Finished difference Result 98 states and 102 transitions. [2023-12-02 12:28:26,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-02 12:28:26,915 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 24 states have internal predecessors, (29), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 55 [2023-12-02 12:28:26,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:28:26,916 INFO L225 Difference]: With dead ends: 98 [2023-12-02 12:28:26,916 INFO L226 Difference]: Without dead ends: 81 [2023-12-02 12:28:26,917 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 127 SyntacticMatches, 3 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 572 ImplicationChecksByTransitivity, 36.4s TimeCoverageRelationStatistics Valid=429, Invalid=1461, Unknown=2, NotChecked=0, Total=1892 [2023-12-02 12:28:26,918 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 183 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.1s IncrementalHoareTripleChecker+Time [2023-12-02 12:28:26,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 24 Invalid, 402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 386 Invalid, 0 Unknown, 0 Unchecked, 15.1s Time] [2023-12-02 12:28:26,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2023-12-02 12:28:26,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2023-12-02 12:28:26,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 69 states have (on average 1.0434782608695652) internal successors, (72), 71 states have internal predecessors, (72), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-02 12:28:26,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 84 transitions. [2023-12-02 12:28:26,930 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 84 transitions. Word has length 55 [2023-12-02 12:28:26,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:28:26,930 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 84 transitions. [2023-12-02 12:28:26,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 24 states have internal predecessors, (29), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 12:28:26,930 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 84 transitions. [2023-12-02 12:28:26,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-02 12:28:26,930 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:28:26,930 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:28:26,935 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-12-02 12:28:27,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-02 12:28:27,131 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-12-02 12:28:27,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:28:27,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1620634316, now seen corresponding path program 2 times [2023-12-02 12:28:27,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:28:27,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447256125] [2023-12-02 12:28:27,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:28:27,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:28:27,139 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 12:28:27,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1870880706] [2023-12-02 12:28:27,139 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 12:28:27,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:28:27,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:28:27,140 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:28:27,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-02 12:28:27,217 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-12-02 12:28:27,217 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:28:27,219 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-02 12:28:27,221 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:28:31,248 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 1 proven. 27 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-02 12:28:31,248 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:28:31,507 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:28:31,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447256125] [2023-12-02 12:28:31,508 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 12:28:31,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1870880706] [2023-12-02 12:28:31,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1870880706] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 12:28:31,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [665968866] [2023-12-02 12:28:31,509 INFO L159 IcfgInterpreter]: Started Sifa with 35 locations of interest [2023-12-02 12:28:31,509 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 12:28:31,510 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 12:28:31,510 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 12:28:31,510 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 12:28:33,467 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 55 for LOIs [2023-12-02 12:28:33,484 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 12:28:33,485 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 12:28:46,409 WARN L293 SmtUtils]: Spent 8.33s on a formula simplification. DAG size of input: 105 DAG size of output: 42 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 12:29:12,369 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '7606#(and (<= 2 |ULTIMATE.start_main_~c~0#1|) (<= 1 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~az~0#1|) (exists ((|v_ULTIMATE.start_main_~x~0#1_129| Int) (|v_ULTIMATE.start_main_~y~0#1_98| Int)) (and (<= (+ (* |v_ULTIMATE.start_main_~x~0#1_129| |ULTIMATE.start_main_~z~0#1|) |ULTIMATE.start_main_~a~0#1|) 9223372036854775807) (= (+ (* |v_ULTIMATE.start_main_~x~0#1_129| |ULTIMATE.start_main_~z~0#1|) |ULTIMATE.start_main_~a~0#1|) |ULTIMATE.start_main_~x~0#1|) (= (+ |v_ULTIMATE.start_main_~x~0#1_129| (* |ULTIMATE.start_main_~az~0#1| |v_ULTIMATE.start_main_~y~0#1_98|)) (+ (* |v_ULTIMATE.start_main_~x~0#1_129| |ULTIMATE.start_main_~z~0#1|) |ULTIMATE.start_main_~a~0#1|)) (= (* |v_ULTIMATE.start_main_~y~0#1_98| |ULTIMATE.start_main_~z~0#1|) |ULTIMATE.start_main_~y~0#1|) (<= (* |v_ULTIMATE.start_main_~y~0#1_98| |ULTIMATE.start_main_~z~0#1|) 9223372036854775807))) (<= 9223372036854775808 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|)) (<= |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~k~0#1|) (<= |ULTIMATE.start_main_~k~0#1| 10) (<= |ULTIMATE.start_main_~a~0#1| 10) (<= |ULTIMATE.start_main_~z~0#1| 10) (<= 0 |ULTIMATE.start_main_~a~0#1|) (<= 0 |ULTIMATE.start_main_~z~0#1|) (<= |ULTIMATE.start_main_~az~0#1| 100))' at error location [2023-12-02 12:29:12,369 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 12:29:12,369 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 12:29:12,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2023-12-02 12:29:12,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168720727] [2023-12-02 12:29:12,369 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 12:29:12,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-02 12:29:12,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:29:12,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-02 12:29:12,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=329, Invalid=1649, Unknown=2, NotChecked=0, Total=1980 [2023-12-02 12:29:12,371 INFO L87 Difference]: Start difference. First operand 81 states and 84 transitions. Second operand has 12 states, 9 states have (on average 5.777777777777778) internal successors, (52), 12 states have internal predecessors, (52), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-02 12:29:17,829 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 12:29:18,896 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 12:29:20,992 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 12:29:22,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:29:22,268 INFO L93 Difference]: Finished difference Result 94 states and 98 transitions. [2023-12-02 12:29:22,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-02 12:29:22,269 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 5.777777777777778) internal successors, (52), 12 states have internal predecessors, (52), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) Word has length 64 [2023-12-02 12:29:22,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:29:22,271 INFO L225 Difference]: With dead ends: 94 [2023-12-02 12:29:22,271 INFO L226 Difference]: Without dead ends: 93 [2023-12-02 12:29:22,272 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 94 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 841 ImplicationChecksByTransitivity, 45.0s TimeCoverageRelationStatistics Valid=366, Invalid=1887, Unknown=3, NotChecked=0, Total=2256 [2023-12-02 12:29:22,273 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 65 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2023-12-02 12:29:22,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 77 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 254 Invalid, 2 Unknown, 0 Unchecked, 7.3s Time] [2023-12-02 12:29:22,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2023-12-02 12:29:22,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 84. [2023-12-02 12:29:22,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 72 states have (on average 1.0416666666666667) internal successors, (75), 74 states have internal predecessors, (75), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-02 12:29:22,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 87 transitions. [2023-12-02 12:29:22,288 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 87 transitions. Word has length 64 [2023-12-02 12:29:22,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:29:22,288 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 87 transitions. [2023-12-02 12:29:22,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 5.777777777777778) internal successors, (52), 12 states have internal predecessors, (52), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-02 12:29:22,288 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 87 transitions. [2023-12-02 12:29:22,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-02 12:29:22,289 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:29:22,289 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:29:22,293 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-12-02 12:29:22,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:29:22,490 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-12-02 12:29:22,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:29:22,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1225925960, now seen corresponding path program 1 times [2023-12-02 12:29:22,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:29:22,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141389017] [2023-12-02 12:29:22,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:29:22,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:29:22,497 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 12:29:22,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1605854378] [2023-12-02 12:29:22,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:29:22,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:29:22,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:29:22,498 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:29:22,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-02 12:29:22,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:29:22,710 INFO L262 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-02 12:29:22,712 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:29:23,585 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 1 proven. 62 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-02 12:29:23,585 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:29:25,198 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 2 proven. 61 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-02 12:29:25,198 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:29:25,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141389017] [2023-12-02 12:29:25,198 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 12:29:25,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1605854378] [2023-12-02 12:29:25,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1605854378] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 12:29:25,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [993861118] [2023-12-02 12:29:25,199 INFO L159 IcfgInterpreter]: Started Sifa with 35 locations of interest [2023-12-02 12:29:25,200 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 12:29:25,200 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 12:29:25,200 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 12:29:25,200 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 12:29:27,358 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 55 for LOIs [2023-12-02 12:29:27,375 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 12:29:27,376 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 12:29:59,030 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8353#(and (<= 2 |ULTIMATE.start_main_~c~0#1|) (<= 9223372036854775808 (+ (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|) |ULTIMATE.start_main_~a~0#1|)) (<= 1 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~az~0#1|) (= (+ (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|) |ULTIMATE.start_main_~a~0#1|) (+ |ULTIMATE.start_main_~x~0#1| (* |ULTIMATE.start_main_~az~0#1| |ULTIMATE.start_main_~y~0#1|))) (<= |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~k~0#1|) (<= |ULTIMATE.start_main_~k~0#1| 10) (<= |ULTIMATE.start_main_~a~0#1| 10) (<= |ULTIMATE.start_main_~z~0#1| 10) (<= (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|) 9223372036854775807) (<= 0 |ULTIMATE.start_main_~z~0#1|) (<= |ULTIMATE.start_main_~az~0#1| 100))' at error location [2023-12-02 12:29:59,030 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 12:29:59,031 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 12:29:59,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2023-12-02 12:29:59,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543705559] [2023-12-02 12:29:59,031 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 12:29:59,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-02 12:29:59,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:29:59,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-02 12:29:59,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=407, Invalid=2043, Unknown=0, NotChecked=0, Total=2450 [2023-12-02 12:29:59,033 INFO L87 Difference]: Start difference. First operand 84 states and 87 transitions. Second operand has 20 states, 17 states have (on average 7.705882352941177) internal successors, (131), 20 states have internal predecessors, (131), 10 states have call successors, (11), 1 states have call predecessors, (11), 3 states have return successors, (12), 10 states have call predecessors, (12), 10 states have call successors, (12) [2023-12-02 12:30:04,043 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-02 12:30:06,153 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-02 12:30:14,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:30:14,314 INFO L93 Difference]: Finished difference Result 147 states and 156 transitions. [2023-12-02 12:30:14,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-02 12:30:14,314 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 7.705882352941177) internal successors, (131), 20 states have internal predecessors, (131), 10 states have call successors, (11), 1 states have call predecessors, (11), 3 states have return successors, (12), 10 states have call predecessors, (12), 10 states have call successors, (12) Word has length 82 [2023-12-02 12:30:14,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:30:14,315 INFO L225 Difference]: With dead ends: 147 [2023-12-02 12:30:14,315 INFO L226 Difference]: Without dead ends: 145 [2023-12-02 12:30:14,316 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 192 SyntacticMatches, 4 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1284 ImplicationChecksByTransitivity, 43.3s TimeCoverageRelationStatistics Valid=600, Invalid=2822, Unknown=0, NotChecked=0, Total=3422 [2023-12-02 12:30:14,316 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 247 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 514 mSolverCounterSat, 42 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 514 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-12-02 12:30:14,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 176 Invalid, 557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 514 Invalid, 1 Unknown, 0 Unchecked, 4.1s Time] [2023-12-02 12:30:14,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2023-12-02 12:30:14,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 142. [2023-12-02 12:30:14,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 127 states have (on average 1.047244094488189) internal successors, (133), 129 states have internal predecessors, (133), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-02 12:30:14,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 151 transitions. [2023-12-02 12:30:14,337 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 151 transitions. Word has length 82 [2023-12-02 12:30:14,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:30:14,338 INFO L495 AbstractCegarLoop]: Abstraction has 142 states and 151 transitions. [2023-12-02 12:30:14,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 7.705882352941177) internal successors, (131), 20 states have internal predecessors, (131), 10 states have call successors, (11), 1 states have call predecessors, (11), 3 states have return successors, (12), 10 states have call predecessors, (12), 10 states have call successors, (12) [2023-12-02 12:30:14,338 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 151 transitions. [2023-12-02 12:30:14,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-12-02 12:30:14,338 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:30:14,339 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:30:14,343 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-12-02 12:30:14,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:30:14,539 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-12-02 12:30:14,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:30:14,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1293811370, now seen corresponding path program 1 times [2023-12-02 12:30:14,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:30:14,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15649419] [2023-12-02 12:30:14,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:30:14,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:30:14,547 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 12:30:14,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [721998646] [2023-12-02 12:30:14,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:30:14,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:30:14,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:30:14,548 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:30:14,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-12-02 12:30:14,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:30:14,600 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-02 12:30:14,601 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:30:14,877 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-02 12:30:14,877 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:30:15,037 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-02 12:30:15,037 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:30:15,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15649419] [2023-12-02 12:30:15,037 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 12:30:15,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [721998646] [2023-12-02 12:30:15,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [721998646] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 12:30:15,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1747642957] [2023-12-02 12:30:15,039 INFO L159 IcfgInterpreter]: Started Sifa with 35 locations of interest [2023-12-02 12:30:15,039 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 12:30:15,039 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 12:30:15,039 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 12:30:15,039 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 12:30:16,993 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 55 for LOIs [2023-12-02 12:30:17,010 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 12:30:17,011 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 12:30:47,920 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '9236#(and (<= 2 |ULTIMATE.start_main_~c~0#1|) (<= 1 |#StackHeapBarrier|) (<= 9223372036854775808 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|)) (<= 0 |ULTIMATE.start_main_~az~0#1|) (<= |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~k~0#1|) (<= |ULTIMATE.start_main_~k~0#1| 10) (<= |ULTIMATE.start_main_~a~0#1| 10) (<= |ULTIMATE.start_main_~z~0#1| 10) (<= 0 |ULTIMATE.start_main_~a~0#1|) (exists ((|v_ULTIMATE.start_main_~x~0#1_148| Int)) (and (= |ULTIMATE.start_main_~x~0#1| (+ (* |v_ULTIMATE.start_main_~x~0#1_148| |ULTIMATE.start_main_~z~0#1|) |ULTIMATE.start_main_~a~0#1|)) (<= 0 (+ (* |v_ULTIMATE.start_main_~x~0#1_148| |ULTIMATE.start_main_~z~0#1|) 9223372036854775808)) (= (+ (* |v_ULTIMATE.start_main_~x~0#1_148| |ULTIMATE.start_main_~z~0#1|) |ULTIMATE.start_main_~a~0#1|) (+ |v_ULTIMATE.start_main_~x~0#1_148| (* |ULTIMATE.start_main_~az~0#1| |ULTIMATE.start_main_~y~0#1|))) (<= (+ (* |v_ULTIMATE.start_main_~x~0#1_148| |ULTIMATE.start_main_~z~0#1|) |ULTIMATE.start_main_~a~0#1|) 9223372036854775807))) (<= 0 |ULTIMATE.start_main_~z~0#1|))' at error location [2023-12-02 12:30:47,920 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 12:30:47,920 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 12:30:47,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-12-02 12:30:47,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800891938] [2023-12-02 12:30:47,920 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 12:30:47,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-02 12:30:47,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:30:47,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-02 12:30:47,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=297, Invalid=1343, Unknown=0, NotChecked=0, Total=1640 [2023-12-02 12:30:47,922 INFO L87 Difference]: Start difference. First operand 142 states and 151 transitions. Second operand has 11 states, 9 states have (on average 14.88888888888889) internal successors, (134), 11 states have internal predecessors, (134), 9 states have call successors, (11), 1 states have call predecessors, (11), 2 states have return successors, (12), 8 states have call predecessors, (12), 9 states have call successors, (12) [2023-12-02 12:30:52,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:30:52,453 INFO L93 Difference]: Finished difference Result 169 states and 179 transitions. [2023-12-02 12:30:52,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-02 12:30:52,453 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 14.88888888888889) internal successors, (134), 11 states have internal predecessors, (134), 9 states have call successors, (11), 1 states have call predecessors, (11), 2 states have return successors, (12), 8 states have call predecessors, (12), 9 states have call successors, (12) Word has length 84 [2023-12-02 12:30:52,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:30:52,454 INFO L225 Difference]: With dead ends: 169 [2023-12-02 12:30:52,454 INFO L226 Difference]: Without dead ends: 168 [2023-12-02 12:30:52,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 207 SyntacticMatches, 4 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 733 ImplicationChecksByTransitivity, 31.2s TimeCoverageRelationStatistics Valid=330, Invalid=1562, Unknown=0, NotChecked=0, Total=1892 [2023-12-02 12:30:52,456 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 178 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-12-02 12:30:52,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 111 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 316 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2023-12-02 12:30:52,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2023-12-02 12:30:52,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 165. [2023-12-02 12:30:52,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 149 states have (on average 1.0402684563758389) internal successors, (155), 151 states have internal predecessors, (155), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-12-02 12:30:52,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 175 transitions. [2023-12-02 12:30:52,481 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 175 transitions. Word has length 84 [2023-12-02 12:30:52,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:30:52,482 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 175 transitions. [2023-12-02 12:30:52,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 14.88888888888889) internal successors, (134), 11 states have internal predecessors, (134), 9 states have call successors, (11), 1 states have call predecessors, (11), 2 states have return successors, (12), 8 states have call predecessors, (12), 9 states have call successors, (12) [2023-12-02 12:30:52,482 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 175 transitions. [2023-12-02 12:30:52,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-02 12:30:52,482 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:30:52,482 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:30:52,488 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-12-02 12:30:52,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-12-02 12:30:52,683 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-12-02 12:30:52,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:30:52,683 INFO L85 PathProgramCache]: Analyzing trace with hash 968347476, now seen corresponding path program 3 times [2023-12-02 12:30:52,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:30:52,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924746041] [2023-12-02 12:30:52,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:30:52,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:30:52,692 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 12:30:52,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2101902416] [2023-12-02 12:30:52,692 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-02 12:30:52,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:30:52,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:30:52,693 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:30:52,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-12-02 12:30:53,182 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-02 12:30:53,182 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:30:53,184 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 44 conjunts are in the unsatisfiable core [2023-12-02 12:30:53,186 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:31:04,165 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 3 proven. 140 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-02 12:31:04,166 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:31:04,549 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:31:04,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924746041] [2023-12-02 12:31:04,550 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 12:31:04,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2101902416] [2023-12-02 12:31:04,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2101902416] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 12:31:04,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1373746707] [2023-12-02 12:31:04,551 INFO L159 IcfgInterpreter]: Started Sifa with 35 locations of interest [2023-12-02 12:31:04,551 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 12:31:04,551 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 12:31:04,551 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 12:31:04,552 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 12:31:06,573 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 55 for LOIs [2023-12-02 12:31:06,591 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 12:31:06,592 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 12:31:22,149 WARN L293 SmtUtils]: Spent 7.99s on a formula simplification. DAG size of input: 105 DAG size of output: 42 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 12:31:59,393 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '10032#(and (exists ((|v_ULTIMATE.start_main_~x~0#1_159| Int) (|v_ULTIMATE.start_main_~y~0#1_127| Int)) (and (= (+ |ULTIMATE.start_main_~a~0#1| (* |v_ULTIMATE.start_main_~x~0#1_159| |ULTIMATE.start_main_~z~0#1|)) |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start_main_~y~0#1| (* |v_ULTIMATE.start_main_~y~0#1_127| |ULTIMATE.start_main_~z~0#1|)) (= (+ |ULTIMATE.start_main_~a~0#1| (* |v_ULTIMATE.start_main_~x~0#1_159| |ULTIMATE.start_main_~z~0#1|)) (+ |v_ULTIMATE.start_main_~x~0#1_159| (* |v_ULTIMATE.start_main_~y~0#1_127| |ULTIMATE.start_main_~az~0#1|))) (<= (+ |ULTIMATE.start_main_~a~0#1| (* |v_ULTIMATE.start_main_~x~0#1_159| |ULTIMATE.start_main_~z~0#1|)) 9223372036854775807) (<= (* |v_ULTIMATE.start_main_~y~0#1_127| |ULTIMATE.start_main_~z~0#1|) 9223372036854775807))) (<= 2 |ULTIMATE.start_main_~c~0#1|) (<= 1 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~az~0#1|) (<= 9223372036854775808 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|)) (<= |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~k~0#1|) (<= |ULTIMATE.start_main_~k~0#1| 10) (<= |ULTIMATE.start_main_~a~0#1| 10) (<= |ULTIMATE.start_main_~z~0#1| 10) (<= 0 |ULTIMATE.start_main_~a~0#1|) (<= 0 |ULTIMATE.start_main_~z~0#1|) (<= |ULTIMATE.start_main_~az~0#1| 100))' at error location [2023-12-02 12:31:59,394 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 12:31:59,394 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 12:31:59,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2023-12-02 12:31:59,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291646284] [2023-12-02 12:31:59,394 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 12:31:59,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-02 12:31:59,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:31:59,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-02 12:31:59,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=371, Invalid=2076, Unknown=3, NotChecked=0, Total=2450 [2023-12-02 12:31:59,396 INFO L87 Difference]: Start difference. First operand 165 states and 175 transitions. Second operand has 17 states, 14 states have (on average 6.642857142857143) internal successors, (93), 17 states have internal predecessors, (93), 7 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2023-12-02 12:32:02,433 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 12:32:20,676 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 12:32:22,983 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 12:32:23,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:32:23,107 INFO L93 Difference]: Finished difference Result 167 states and 176 transitions. [2023-12-02 12:32:23,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-02 12:32:23,107 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 14 states have (on average 6.642857142857143) internal successors, (93), 17 states have internal predecessors, (93), 7 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) Word has length 110 [2023-12-02 12:32:23,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:32:23,109 INFO L225 Difference]: With dead ends: 167 [2023-12-02 12:32:23,109 INFO L226 Difference]: Without dead ends: 166 [2023-12-02 12:32:23,110 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 180 SyntacticMatches, 5 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1035 ImplicationChecksByTransitivity, 78.0s TimeCoverageRelationStatistics Valid=404, Invalid=2342, Unknown=10, NotChecked=0, Total=2756 [2023-12-02 12:32:23,110 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 106 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 763 mSolverCounterSat, 8 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 763 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2023-12-02 12:32:23,111 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 217 Invalid, 773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 763 Invalid, 2 Unknown, 0 Unchecked, 7.9s Time] [2023-12-02 12:32:23,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2023-12-02 12:32:23,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 165. [2023-12-02 12:32:23,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 149 states have (on average 1.0335570469798658) internal successors, (154), 151 states have internal predecessors, (154), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-12-02 12:32:23,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 174 transitions. [2023-12-02 12:32:23,133 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 174 transitions. Word has length 110 [2023-12-02 12:32:23,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:32:23,133 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 174 transitions. [2023-12-02 12:32:23,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 14 states have (on average 6.642857142857143) internal successors, (93), 17 states have internal predecessors, (93), 7 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2023-12-02 12:32:23,134 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 174 transitions. [2023-12-02 12:32:23,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-12-02 12:32:23,134 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:32:23,134 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:32:23,139 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-12-02 12:32:23,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-12-02 12:32:23,335 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-12-02 12:32:23,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:32:23,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1556664053, now seen corresponding path program 4 times [2023-12-02 12:32:23,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:32:23,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842255433] [2023-12-02 12:32:23,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:32:23,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:32:23,345 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 12:32:23,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1095151754] [2023-12-02 12:32:23,345 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-02 12:32:23,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:32:23,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:32:23,346 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:32:23,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-12-02 12:32:24,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:32:24,450 INFO L262 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 57 conjunts are in the unsatisfiable core [2023-12-02 12:32:24,454 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:32:42,459 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 0 proven. 227 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-02 12:32:42,459 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:32:42,852 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:32:42,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842255433] [2023-12-02 12:32:42,852 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 12:32:42,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1095151754] [2023-12-02 12:32:42,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1095151754] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 12:32:42,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [176999602] [2023-12-02 12:32:42,854 INFO L159 IcfgInterpreter]: Started Sifa with 35 locations of interest [2023-12-02 12:32:42,854 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 12:32:42,854 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 12:32:42,854 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 12:32:42,854 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 12:32:44,883 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 55 for LOIs [2023-12-02 12:32:44,904 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 12:32:44,905 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 12:32:59,116 WARN L293 SmtUtils]: Spent 9.15s on a formula simplification. DAG size of input: 105 DAG size of output: 42 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 12:33:42,910 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '10899#(and (<= 2 |ULTIMATE.start_main_~c~0#1|) (<= 1 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~az~0#1|) (<= 9223372036854775808 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|)) (<= |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~k~0#1|) (<= |ULTIMATE.start_main_~k~0#1| 10) (<= |ULTIMATE.start_main_~a~0#1| 10) (<= |ULTIMATE.start_main_~z~0#1| 10) (<= 0 |ULTIMATE.start_main_~a~0#1|) (exists ((|v_ULTIMATE.start_main_~x~0#1_171| Int) (|v_ULTIMATE.start_main_~y~0#1_138| Int)) (and (= |ULTIMATE.start_main_~x~0#1| (+ (* |v_ULTIMATE.start_main_~x~0#1_171| |ULTIMATE.start_main_~z~0#1|) |ULTIMATE.start_main_~a~0#1|)) (<= (* |v_ULTIMATE.start_main_~y~0#1_138| |ULTIMATE.start_main_~z~0#1|) 9223372036854775807) (= (+ (* |v_ULTIMATE.start_main_~x~0#1_171| |ULTIMATE.start_main_~z~0#1|) |ULTIMATE.start_main_~a~0#1|) (+ |v_ULTIMATE.start_main_~x~0#1_171| (* |v_ULTIMATE.start_main_~y~0#1_138| |ULTIMATE.start_main_~az~0#1|))) (<= (+ (* |v_ULTIMATE.start_main_~x~0#1_171| |ULTIMATE.start_main_~z~0#1|) |ULTIMATE.start_main_~a~0#1|) 9223372036854775807) (= |ULTIMATE.start_main_~y~0#1| (* |v_ULTIMATE.start_main_~y~0#1_138| |ULTIMATE.start_main_~z~0#1|)))) (<= 0 |ULTIMATE.start_main_~z~0#1|) (<= |ULTIMATE.start_main_~az~0#1| 100))' at error location [2023-12-02 12:33:42,910 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 12:33:42,910 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 12:33:42,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2023-12-02 12:33:42,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357772403] [2023-12-02 12:33:42,911 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 12:33:42,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-02 12:33:42,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:33:42,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-02 12:33:42,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=382, Invalid=2262, Unknown=8, NotChecked=0, Total=2652 [2023-12-02 12:33:42,913 INFO L87 Difference]: Start difference. First operand 165 states and 174 transitions. Second operand has 19 states, 16 states have (on average 7.0) internal successors, (112), 19 states have internal predecessors, (112), 8 states have call successors, (8), 1 states have call predecessors, (8), 3 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-02 12:33:44,437 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 12:33:49,281 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 12:33:51,316 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 12:33:54,833 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 12:33:57,548 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 12:33:59,599 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 12:34:01,365 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 12:34:03,371 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 12:34:05,395 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 12:34:07,536 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 12:34:09,585 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 12:34:12,430 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 12:34:14,543 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 12:34:18,297 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 12:34:20,302 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 12:34:22,325 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 12:34:24,330 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 12:34:26,354 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 12:34:29,220 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 12:34:31,436 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 12:34:33,617 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 12:34:35,753 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 12:34:37,054 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 12:34:39,867 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 12:34:41,918 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 12:34:43,927 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 12:34:45,767 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 12:34:52,577 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 12:34:57,206 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 12:34:59,231 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 12:35:01,283 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 12:35:03,338 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 12:35:04,598 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 12:35:06,620 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 12:35:08,643 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 12:35:10,665 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 12:35:12,689 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 12:35:14,805 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 12:35:16,835 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 12:35:30,887 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 12:35:32,106 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 12:35:34,686 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 12:35:36,454 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 12:35:39,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:35:39,226 INFO L93 Difference]: Finished difference Result 168 states and 175 transitions. [2023-12-02 12:35:39,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-02 12:35:39,227 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 16 states have (on average 7.0) internal successors, (112), 19 states have internal predecessors, (112), 8 states have call successors, (8), 1 states have call predecessors, (8), 3 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) Word has length 133 [2023-12-02 12:35:39,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:35:39,228 INFO L225 Difference]: With dead ends: 168 [2023-12-02 12:35:39,228 INFO L226 Difference]: Without dead ends: 166 [2023-12-02 12:35:39,229 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 222 SyntacticMatches, 6 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1142 ImplicationChecksByTransitivity, 95.3s TimeCoverageRelationStatistics Valid=449, Invalid=2842, Unknown=15, NotChecked=0, Total=3306 [2023-12-02 12:35:39,229 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 106 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 1160 mSolverCounterSat, 13 mSolverCounterUnsat, 33 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 94.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 1206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1160 IncrementalHoareTripleChecker+Invalid, 33 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 94.6s IncrementalHoareTripleChecker+Time [2023-12-02 12:35:39,230 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 303 Invalid, 1206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1160 Invalid, 33 Unknown, 0 Unchecked, 94.6s Time] [2023-12-02 12:35:39,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2023-12-02 12:35:39,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 165. [2023-12-02 12:35:39,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 149 states have (on average 1.0201342281879195) internal successors, (152), 151 states have internal predecessors, (152), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-12-02 12:35:39,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 172 transitions. [2023-12-02 12:35:39,255 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 172 transitions. Word has length 133 [2023-12-02 12:35:39,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:35:39,255 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 172 transitions. [2023-12-02 12:35:39,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 16 states have (on average 7.0) internal successors, (112), 19 states have internal predecessors, (112), 8 states have call successors, (8), 1 states have call predecessors, (8), 3 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-02 12:35:39,256 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 172 transitions. [2023-12-02 12:35:39,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-12-02 12:35:39,256 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:35:39,256 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:35:39,263 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2023-12-02 12:35:39,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-12-02 12:35:39,457 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-12-02 12:35:39,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:35:39,457 INFO L85 PathProgramCache]: Analyzing trace with hash -1223175820, now seen corresponding path program 5 times [2023-12-02 12:35:39,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:35:39,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165678410] [2023-12-02 12:35:39,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:35:39,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:35:39,468 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 12:35:39,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [615873898] [2023-12-02 12:35:39,468 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 12:35:39,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:35:39,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:35:39,470 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:35:39,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc16f54-8fcb-413e-af60-c6975175cfb1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-12-02 12:35:55,083 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2023-12-02 12:35:55,083 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:35:55,087 INFO L262 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-02 12:35:55,090 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:36:17,439 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 2 proven. 303 refuted. 35 times theorem prover too weak. 29 trivial. 0 not checked. [2023-12-02 12:36:17,439 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:36:17,687 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:36:17,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165678410] [2023-12-02 12:36:17,687 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 12:36:17,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [615873898] [2023-12-02 12:36:17,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [615873898] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 12:36:17,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1114839080] [2023-12-02 12:36:17,688 INFO L159 IcfgInterpreter]: Started Sifa with 35 locations of interest [2023-12-02 12:36:17,688 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 12:36:17,688 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 12:36:17,688 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 12:36:17,689 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 12:36:19,691 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 55 for LOIs [2023-12-02 12:36:19,710 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 12:36:19,711 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 12:36:31,997 WARN L293 SmtUtils]: Spent 6.68s on a formula simplification. DAG size of input: 105 DAG size of output: 42 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 12:37:32,216 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '11836#(and (<= 2 |ULTIMATE.start_main_~c~0#1|) (<= 1 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~az~0#1|) (<= 9223372036854775808 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|)) (<= |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~k~0#1|) (<= |ULTIMATE.start_main_~k~0#1| 10) (<= |ULTIMATE.start_main_~a~0#1| 10) (exists ((|v_ULTIMATE.start_main_~x~0#1_182| Int) (|v_ULTIMATE.start_main_~y~0#1_143| Int)) (and (<= (+ (* |v_ULTIMATE.start_main_~x~0#1_182| |ULTIMATE.start_main_~z~0#1|) |ULTIMATE.start_main_~a~0#1|) 9223372036854775807) (<= (* |v_ULTIMATE.start_main_~y~0#1_143| |ULTIMATE.start_main_~z~0#1|) 9223372036854775807) (= (+ (* |v_ULTIMATE.start_main_~x~0#1_182| |ULTIMATE.start_main_~z~0#1|) |ULTIMATE.start_main_~a~0#1|) |ULTIMATE.start_main_~x~0#1|) (= (+ (* |v_ULTIMATE.start_main_~x~0#1_182| |ULTIMATE.start_main_~z~0#1|) |ULTIMATE.start_main_~a~0#1|) (+ (* |v_ULTIMATE.start_main_~y~0#1_143| |ULTIMATE.start_main_~az~0#1|) |v_ULTIMATE.start_main_~x~0#1_182|)) (= |ULTIMATE.start_main_~y~0#1| (* |v_ULTIMATE.start_main_~y~0#1_143| |ULTIMATE.start_main_~z~0#1|)))) (<= |ULTIMATE.start_main_~z~0#1| 10) (<= 0 |ULTIMATE.start_main_~a~0#1|) (<= 0 |ULTIMATE.start_main_~z~0#1|) (<= |ULTIMATE.start_main_~az~0#1| 100))' at error location [2023-12-02 12:37:32,216 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 12:37:32,217 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 12:37:32,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2023-12-02 12:37:32,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075050813] [2023-12-02 12:37:32,217 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 12:37:32,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-02 12:37:32,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:37:32,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-02 12:37:32,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=340, Invalid=1812, Unknown=10, NotChecked=0, Total=2162 [2023-12-02 12:37:32,219 INFO L87 Difference]: Start difference. First operand 165 states and 172 transitions. Second operand has 15 states, 12 states have (on average 11.083333333333334) internal successors, (133), 15 states have internal predecessors, (133), 9 states have call successors, (9), 1 states have call predecessors, (9), 3 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-02 12:37:34,528 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0]