./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound20.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 30e01a73 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_e605f52a-d60a-4158-b0a4-435d8ac0f590/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e605f52a-d60a-4158-b0a4-435d8ac0f590/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e605f52a-d60a-4158-b0a4-435d8ac0f590/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e605f52a-d60a-4158-b0a4-435d8ac0f590/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound20.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e605f52a-d60a-4158-b0a4-435d8ac0f590/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e605f52a-d60a-4158-b0a4-435d8ac0f590/bin/utaipan-verify-mE87zJ7Ire --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 93ad3f0e42b4c26a38d8e528f550b89aecdadec634fd1fe3b21f86af4528c655 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 20:32:04,047 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 20:32:04,116 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e605f52a-d60a-4158-b0a4-435d8ac0f590/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-11-23 20:32:04,123 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 20:32:04,124 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 20:32:04,151 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 20:32:04,152 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 20:32:04,153 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 20:32:04,154 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 20:32:04,154 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 20:32:04,155 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 20:32:04,155 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 20:32:04,156 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 20:32:04,157 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 20:32:04,157 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 20:32:04,158 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 20:32:04,158 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 20:32:04,159 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 20:32:04,159 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 20:32:04,160 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 20:32:04,161 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 20:32:04,165 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 20:32:04,166 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 20:32:04,167 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 20:32:04,167 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 20:32:04,168 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 20:32:04,168 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 20:32:04,169 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 20:32:04,169 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 20:32:04,170 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 20:32:04,175 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 20:32:04,175 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-23 20:32:04,176 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 20:32:04,176 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 20:32:04,176 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 20:32:04,177 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 20:32:04,177 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 20:32:04,178 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 20:32:04,178 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 20:32:04,179 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:32:04,179 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 20:32:04,180 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 20:32:04,180 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 20:32:04,180 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 20:32:04,181 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 20:32:04,181 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 20:32:04,182 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 20:32:04,182 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 20:32:04,182 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 20:32:04,183 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_e605f52a-d60a-4158-b0a4-435d8ac0f590/bin/utaipan-verify-mE87zJ7Ire/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e605f52a-d60a-4158-b0a4-435d8ac0f590/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 93ad3f0e42b4c26a38d8e528f550b89aecdadec634fd1fe3b21f86af4528c655 [2023-11-23 20:32:04,433 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 20:32:04,460 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 20:32:04,463 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 20:32:04,465 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 20:32:04,465 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 20:32:04,467 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e605f52a-d60a-4158-b0a4-435d8ac0f590/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound20.c [2023-11-23 20:32:07,545 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 20:32:07,820 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 20:32:07,820 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e605f52a-d60a-4158-b0a4-435d8ac0f590/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound20.c [2023-11-23 20:32:07,830 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e605f52a-d60a-4158-b0a4-435d8ac0f590/bin/utaipan-verify-mE87zJ7Ire/data/cad78801c/2412b9d876fb4b418543903606091aec/FLAG51d728637 [2023-11-23 20:32:07,849 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e605f52a-d60a-4158-b0a4-435d8ac0f590/bin/utaipan-verify-mE87zJ7Ire/data/cad78801c/2412b9d876fb4b418543903606091aec [2023-11-23 20:32:07,855 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 20:32:07,857 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 20:32:07,861 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 20:32:07,861 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 20:32:07,867 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 20:32:07,870 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:32:07" (1/1) ... [2023-11-23 20:32:07,871 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47fe8769 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:07, skipping insertion in model container [2023-11-23 20:32:07,872 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:32:07" (1/1) ... [2023-11-23 20:32:07,903 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 20:32:08,086 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:32:08,098 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 20:32:08,121 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:32:08,136 INFO L206 MainTranslator]: Completed translation [2023-11-23 20:32:08,137 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:08 WrapperNode [2023-11-23 20:32:08,137 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 20:32:08,138 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 20:32:08,139 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 20:32:08,139 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 20:32:08,147 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:08" (1/1) ... [2023-11-23 20:32:08,155 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:08" (1/1) ... [2023-11-23 20:32:08,180 INFO L138 Inliner]: procedures = 14, calls = 16, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 107 [2023-11-23 20:32:08,181 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 20:32:08,182 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 20:32:08,182 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 20:32:08,182 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 20:32:08,193 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:08" (1/1) ... [2023-11-23 20:32:08,193 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:08" (1/1) ... [2023-11-23 20:32:08,195 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:08" (1/1) ... [2023-11-23 20:32:08,195 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:08" (1/1) ... [2023-11-23 20:32:08,200 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:08" (1/1) ... [2023-11-23 20:32:08,204 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:08" (1/1) ... [2023-11-23 20:32:08,206 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:08" (1/1) ... [2023-11-23 20:32:08,207 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:08" (1/1) ... [2023-11-23 20:32:08,209 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 20:32:08,210 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 20:32:08,211 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 20:32:08,211 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 20:32:08,212 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:08" (1/1) ... [2023-11-23 20:32:08,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:32:08,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e605f52a-d60a-4158-b0a4-435d8ac0f590/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:32:08,246 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e605f52a-d60a-4158-b0a4-435d8ac0f590/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 20:32:08,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e605f52a-d60a-4158-b0a4-435d8ac0f590/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 20:32:08,290 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 20:32:08,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 20:32:08,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 20:32:08,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 20:32:08,291 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 20:32:08,291 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 20:32:08,363 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 20:32:08,365 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 20:32:08,678 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 20:32:08,777 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 20:32:08,777 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-23 20:32:08,779 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:32:08 BoogieIcfgContainer [2023-11-23 20:32:08,779 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 20:32:08,785 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 20:32:08,785 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 20:32:08,790 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 20:32:08,791 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 08:32:07" (1/3) ... [2023-11-23 20:32:08,792 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d803bbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:32:08, skipping insertion in model container [2023-11-23 20:32:08,793 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:08" (2/3) ... [2023-11-23 20:32:08,793 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d803bbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:32:08, skipping insertion in model container [2023-11-23 20:32:08,794 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:32:08" (3/3) ... [2023-11-23 20:32:08,795 INFO L112 eAbstractionObserver]: Analyzing ICFG cohendiv-ll_unwindbound20.c [2023-11-23 20:32:08,815 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 20:32:08,815 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 34 error locations. [2023-11-23 20:32:08,869 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 20:32:08,877 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;@4e743c22, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 20:32:08,877 INFO L358 AbstractCegarLoop]: Starting to check reachability of 34 error locations. [2023-11-23 20:32:08,882 INFO L276 IsEmpty]: Start isEmpty. Operand has 86 states, 43 states have (on average 1.930232558139535) internal successors, (83), 77 states have internal predecessors, (83), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-23 20:32:08,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-23 20:32:08,888 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:32:08,889 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-23 20:32:08,889 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-11-23 20:32:08,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:32:08,896 INFO L85 PathProgramCache]: Analyzing trace with hash 184961, now seen corresponding path program 1 times [2023-11-23 20:32:08,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:32:08,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460647840] [2023-11-23 20:32:08,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:32:08,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:32:09,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:32:09,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:32:09,250 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:32:09,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460647840] [2023-11-23 20:32:09,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460647840] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:32:09,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:32:09,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 20:32:09,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044534085] [2023-11-23 20:32:09,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:32:09,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 20:32:09,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:32:09,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 20:32:09,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 20:32:09,316 INFO L87 Difference]: Start difference. First operand has 86 states, 43 states have (on average 1.930232558139535) internal successors, (83), 77 states have internal predecessors, (83), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:32:09,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:32:09,453 INFO L93 Difference]: Finished difference Result 175 states and 201 transitions. [2023-11-23 20:32:09,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 20:32:09,456 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-11-23 20:32:09,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:32:09,463 INFO L225 Difference]: With dead ends: 175 [2023-11-23 20:32:09,463 INFO L226 Difference]: Without dead ends: 87 [2023-11-23 20:32:09,466 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 20:32:09,471 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 4 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 20:32:09,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 260 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 20:32:09,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2023-11-23 20:32:09,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2023-11-23 20:32:09,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 46 states have (on average 1.8043478260869565) internal successors, (83), 79 states have internal predecessors, (83), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-23 20:32:09,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 95 transitions. [2023-11-23 20:32:09,522 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 95 transitions. Word has length 3 [2023-11-23 20:32:09,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:32:09,523 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 95 transitions. [2023-11-23 20:32:09,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:32:09,524 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 95 transitions. [2023-11-23 20:32:09,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-23 20:32:09,525 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:32:09,525 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-23 20:32:09,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 20:32:09,526 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-11-23 20:32:09,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:32:09,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1215253681, now seen corresponding path program 1 times [2023-11-23 20:32:09,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:32:09,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484604958] [2023-11-23 20:32:09,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:32:09,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:32:09,543 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 20:32:09,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [924201387] [2023-11-23 20:32:09,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:32:09,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:32:09,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e605f52a-d60a-4158-b0a4-435d8ac0f590/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:32:09,547 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e605f52a-d60a-4158-b0a4-435d8ac0f590/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 20:32:09,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e605f52a-d60a-4158-b0a4-435d8ac0f590/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 20:32:09,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:32:09,642 INFO L262 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 20:32:09,647 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:32:09,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:32:09,668 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 20:32:09,668 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:32:09,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484604958] [2023-11-23 20:32:09,669 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 20:32:09,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [924201387] [2023-11-23 20:32:09,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [924201387] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:32:09,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:32:09,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-23 20:32:09,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940048610] [2023-11-23 20:32:09,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:32:09,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:32:09,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:32:09,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:32:09,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:32:09,695 INFO L87 Difference]: Start difference. First operand 87 states and 95 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:32:09,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:32:09,772 INFO L93 Difference]: Finished difference Result 110 states and 120 transitions. [2023-11-23 20:32:09,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:32:09,773 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-23 20:32:09,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:32:09,775 INFO L225 Difference]: With dead ends: 110 [2023-11-23 20:32:09,776 INFO L226 Difference]: Without dead ends: 108 [2023-11-23 20:32:09,776 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:32:09,778 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 18 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 20:32:09,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 155 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 20:32:09,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2023-11-23 20:32:09,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 89. [2023-11-23 20:32:09,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 48 states have (on average 1.7708333333333333) internal successors, (85), 81 states have internal predecessors, (85), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-23 20:32:09,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 97 transitions. [2023-11-23 20:32:09,796 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 97 transitions. Word has length 6 [2023-11-23 20:32:09,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:32:09,797 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 97 transitions. [2023-11-23 20:32:09,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:32:09,797 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 97 transitions. [2023-11-23 20:32:09,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-23 20:32:09,798 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:32:09,798 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:32:09,824 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e605f52a-d60a-4158-b0a4-435d8ac0f590/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-23 20:32:10,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e605f52a-d60a-4158-b0a4-435d8ac0f590/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:32:10,021 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-11-23 20:32:10,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:32:10,021 INFO L85 PathProgramCache]: Analyzing trace with hash -2034502159, now seen corresponding path program 1 times [2023-11-23 20:32:10,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:32:10,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734312787] [2023-11-23 20:32:10,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:32:10,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:32:10,039 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 20:32:10,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2066153589] [2023-11-23 20:32:10,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:32:10,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:32:10,041 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e605f52a-d60a-4158-b0a4-435d8ac0f590/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:32:10,042 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e605f52a-d60a-4158-b0a4-435d8ac0f590/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 20:32:10,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e605f52a-d60a-4158-b0a4-435d8ac0f590/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 20:32:10,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:32:10,097 INFO L262 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 20:32:10,099 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:32:10,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:32:10,144 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 20:32:10,145 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:32:10,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734312787] [2023-11-23 20:32:10,146 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 20:32:10,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2066153589] [2023-11-23 20:32:10,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2066153589] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:32:10,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:32:10,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 20:32:10,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393299873] [2023-11-23 20:32:10,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:32:10,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:32:10,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:32:10,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:32:10,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:32:10,155 INFO L87 Difference]: Start difference. First operand 89 states and 97 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 20:32:10,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:32:10,242 INFO L93 Difference]: Finished difference Result 159 states and 175 transitions. [2023-11-23 20:32:10,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:32:10,243 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2023-11-23 20:32:10,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:32:10,245 INFO L225 Difference]: With dead ends: 159 [2023-11-23 20:32:10,245 INFO L226 Difference]: Without dead ends: 153 [2023-11-23 20:32:10,246 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:32:10,248 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 59 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 20:32:10,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 130 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 20:32:10,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2023-11-23 20:32:10,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 123. [2023-11-23 20:32:10,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 76 states have (on average 1.763157894736842) internal successors, (134), 109 states have internal predecessors, (134), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-23 20:32:10,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 158 transitions. [2023-11-23 20:32:10,265 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 158 transitions. Word has length 11 [2023-11-23 20:32:10,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:32:10,265 INFO L495 AbstractCegarLoop]: Abstraction has 123 states and 158 transitions. [2023-11-23 20:32:10,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 20:32:10,265 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 158 transitions. [2023-11-23 20:32:10,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-23 20:32:10,266 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:32:10,266 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:32:10,292 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e605f52a-d60a-4158-b0a4-435d8ac0f590/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-23 20:32:10,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e605f52a-d60a-4158-b0a4-435d8ac0f590/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:32:10,467 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-11-23 20:32:10,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:32:10,468 INFO L85 PathProgramCache]: Analyzing trace with hash -946453133, now seen corresponding path program 1 times [2023-11-23 20:32:10,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:32:10,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126286534] [2023-11-23 20:32:10,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:32:10,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:32:10,482 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 20:32:10,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1131460186] [2023-11-23 20:32:10,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:32:10,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:32:10,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e605f52a-d60a-4158-b0a4-435d8ac0f590/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:32:10,485 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e605f52a-d60a-4158-b0a4-435d8ac0f590/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 20:32:10,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e605f52a-d60a-4158-b0a4-435d8ac0f590/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-23 20:32:10,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:32:10,548 INFO L262 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 20:32:10,550 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:32:10,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:32:10,690 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 20:32:10,690 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:32:10,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126286534] [2023-11-23 20:32:10,691 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 20:32:10,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1131460186] [2023-11-23 20:32:10,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1131460186] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:32:10,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:32:10,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 20:32:10,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821535289] [2023-11-23 20:32:10,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:32:10,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:32:10,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:32:10,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:32:10,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:32:10,693 INFO L87 Difference]: Start difference. First operand 123 states and 158 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 20:32:10,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:32:10,814 INFO L93 Difference]: Finished difference Result 149 states and 165 transitions. [2023-11-23 20:32:10,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:32:10,815 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2023-11-23 20:32:10,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:32:10,820 INFO L225 Difference]: With dead ends: 149 [2023-11-23 20:32:10,821 INFO L226 Difference]: Without dead ends: 146 [2023-11-23 20:32:10,822 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:32:10,826 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 50 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 20:32:10,830 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 121 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 20:32:10,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2023-11-23 20:32:10,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 124. [2023-11-23 20:32:10,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 77 states have (on average 1.7272727272727273) internal successors, (133), 110 states have internal predecessors, (133), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-23 20:32:10,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 157 transitions. [2023-11-23 20:32:10,860 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 157 transitions. Word has length 13 [2023-11-23 20:32:10,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:32:10,860 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 157 transitions. [2023-11-23 20:32:10,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 20:32:10,862 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 157 transitions. [2023-11-23 20:32:10,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-23 20:32:10,862 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:32:10,862 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:32:10,880 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e605f52a-d60a-4158-b0a4-435d8ac0f590/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-23 20:32:11,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e605f52a-d60a-4158-b0a4-435d8ac0f590/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:32:11,063 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-11-23 20:32:11,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:32:11,064 INFO L85 PathProgramCache]: Analyzing trace with hash 724724015, now seen corresponding path program 1 times [2023-11-23 20:32:11,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:32:11,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345016390] [2023-11-23 20:32:11,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:32:11,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:32:11,080 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 20:32:11,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [599192034] [2023-11-23 20:32:11,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:32:11,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:32:11,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e605f52a-d60a-4158-b0a4-435d8ac0f590/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:32:11,088 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e605f52a-d60a-4158-b0a4-435d8ac0f590/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 20:32:11,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e605f52a-d60a-4158-b0a4-435d8ac0f590/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-23 20:32:11,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:32:11,142 INFO L262 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 20:32:11,144 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:32:11,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:32:11,226 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 20:32:11,226 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:32:11,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345016390] [2023-11-23 20:32:11,227 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 20:32:11,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [599192034] [2023-11-23 20:32:11,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [599192034] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:32:11,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:32:11,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 20:32:11,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876273010] [2023-11-23 20:32:11,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:32:11,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:32:11,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:32:11,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:32:11,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:32:11,230 INFO L87 Difference]: Start difference. First operand 124 states and 157 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 20:32:11,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:32:11,326 INFO L93 Difference]: Finished difference Result 146 states and 162 transitions. [2023-11-23 20:32:11,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:32:11,329 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2023-11-23 20:32:11,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:32:11,330 INFO L225 Difference]: With dead ends: 146 [2023-11-23 20:32:11,330 INFO L226 Difference]: Without dead ends: 139 [2023-11-23 20:32:11,331 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:32:11,332 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 46 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 20:32:11,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 124 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 20:32:11,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2023-11-23 20:32:11,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 121. [2023-11-23 20:32:11,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 74 states have (on average 1.7162162162162162) internal successors, (127), 107 states have internal predecessors, (127), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-23 20:32:11,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 151 transitions. [2023-11-23 20:32:11,365 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 151 transitions. Word has length 14 [2023-11-23 20:32:11,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:32:11,366 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 151 transitions. [2023-11-23 20:32:11,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 20:32:11,366 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 151 transitions. [2023-11-23 20:32:11,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-23 20:32:11,367 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:32:11,367 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:32:11,388 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e605f52a-d60a-4158-b0a4-435d8ac0f590/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-23 20:32:11,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e605f52a-d60a-4158-b0a4-435d8ac0f590/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:32:11,568 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-11-23 20:32:11,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:32:11,569 INFO L85 PathProgramCache]: Analyzing trace with hash -850449246, now seen corresponding path program 1 times [2023-11-23 20:32:11,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:32:11,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212999740] [2023-11-23 20:32:11,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:32:11,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:32:11,581 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 20:32:11,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1380057627] [2023-11-23 20:32:11,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:32:11,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:32:11,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e605f52a-d60a-4158-b0a4-435d8ac0f590/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:32:11,583 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e605f52a-d60a-4158-b0a4-435d8ac0f590/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 20:32:11,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e605f52a-d60a-4158-b0a4-435d8ac0f590/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-23 20:32:11,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:32:11,639 INFO L262 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 20:32:11,641 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:32:11,693 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 20:32:11,694 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 20:32:11,694 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:32:11,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212999740] [2023-11-23 20:32:11,694 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 20:32:11,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1380057627] [2023-11-23 20:32:11,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1380057627] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:32:11,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:32:11,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 20:32:11,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101486697] [2023-11-23 20:32:11,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:32:11,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 20:32:11,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:32:11,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 20:32:11,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 20:32:11,697 INFO L87 Difference]: Start difference. First operand 121 states and 151 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, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 20:32:11,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:32:11,755 INFO L93 Difference]: Finished difference Result 121 states and 151 transitions. [2023-11-23 20:32:11,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 20:32:11,755 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, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2023-11-23 20:32:11,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:32:11,757 INFO L225 Difference]: With dead ends: 121 [2023-11-23 20:32:11,758 INFO L226 Difference]: Without dead ends: 119 [2023-11-23 20:32:11,758 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-23 20:32:11,759 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 78 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 20:32:11,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 225 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 20:32:11,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2023-11-23 20:32:11,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2023-11-23 20:32:11,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 74 states have (on average 1.6756756756756757) internal successors, (124), 105 states have internal predecessors, (124), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-23 20:32:11,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 148 transitions. [2023-11-23 20:32:11,772 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 148 transitions. Word has length 20 [2023-11-23 20:32:11,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:32:11,772 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 148 transitions. [2023-11-23 20:32:11,772 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, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 20:32:11,773 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 148 transitions. [2023-11-23 20:32:11,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-23 20:32:11,773 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:32:11,773 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:32:11,795 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e605f52a-d60a-4158-b0a4-435d8ac0f590/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-23 20:32:11,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e605f52a-d60a-4158-b0a4-435d8ac0f590/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-23 20:32:11,987 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-11-23 20:32:11,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:32:11,987 INFO L85 PathProgramCache]: Analyzing trace with hash -594122769, now seen corresponding path program 1 times [2023-11-23 20:32:11,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:32:11,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969434098] [2023-11-23 20:32:11,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:32:11,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:32:11,998 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 20:32:11,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [430633439] [2023-11-23 20:32:11,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:32:11,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:32:11,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e605f52a-d60a-4158-b0a4-435d8ac0f590/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:32:12,000 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e605f52a-d60a-4158-b0a4-435d8ac0f590/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 20:32:12,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e605f52a-d60a-4158-b0a4-435d8ac0f590/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-23 20:32:12,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:32:12,047 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 20:32:12,049 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:32:12,095 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 20:32:12,095 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 20:32:12,096 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:32:12,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969434098] [2023-11-23 20:32:12,096 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 20:32:12,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [430633439] [2023-11-23 20:32:12,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [430633439] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:32:12,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:32:12,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 20:32:12,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128088278] [2023-11-23 20:32:12,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:32:12,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 20:32:12,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:32:12,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 20:32:12,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 20:32:12,099 INFO L87 Difference]: Start difference. First operand 119 states and 148 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 20:32:12,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:32:12,184 INFO L93 Difference]: Finished difference Result 138 states and 168 transitions. [2023-11-23 20:32:12,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 20:32:12,184 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 21 [2023-11-23 20:32:12,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:32:12,186 INFO L225 Difference]: With dead ends: 138 [2023-11-23 20:32:12,186 INFO L226 Difference]: Without dead ends: 137 [2023-11-23 20:32:12,186 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-23 20:32:12,189 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 22 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 20:32:12,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 303 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 20:32:12,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2023-11-23 20:32:12,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 127. [2023-11-23 20:32:12,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 81 states have (on average 1.617283950617284) internal successors, (131), 112 states have internal predecessors, (131), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-23 20:32:12,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 155 transitions. [2023-11-23 20:32:12,205 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 155 transitions. Word has length 21 [2023-11-23 20:32:12,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:32:12,206 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 155 transitions. [2023-11-23 20:32:12,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 20:32:12,206 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 155 transitions. [2023-11-23 20:32:12,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-23 20:32:12,207 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:32:12,207 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:32:12,233 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e605f52a-d60a-4158-b0a4-435d8ac0f590/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-23 20:32:12,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e605f52a-d60a-4158-b0a4-435d8ac0f590/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-23 20:32:12,428 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-11-23 20:32:12,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:32:12,429 INFO L85 PathProgramCache]: Analyzing trace with hash 278672095, now seen corresponding path program 1 times [2023-11-23 20:32:12,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:32:12,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004265759] [2023-11-23 20:32:12,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:32:12,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:32:12,439 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 20:32:12,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1249466823] [2023-11-23 20:32:12,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:32:12,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:32:12,440 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e605f52a-d60a-4158-b0a4-435d8ac0f590/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:32:12,441 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e605f52a-d60a-4158-b0a4-435d8ac0f590/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 20:32:12,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e605f52a-d60a-4158-b0a4-435d8ac0f590/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-23 20:32:12,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:32:12,489 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 20:32:12,490 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:32:12,552 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 20:32:12,552 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 20:32:12,552 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:32:12,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004265759] [2023-11-23 20:32:12,552 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 20:32:12,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1249466823] [2023-11-23 20:32:12,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1249466823] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:32:12,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:32:12,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 20:32:12,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238515646] [2023-11-23 20:32:12,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:32:12,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 20:32:12,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:32:12,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 20:32:12,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-23 20:32:12,554 INFO L87 Difference]: Start difference. First operand 127 states and 155 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 20:32:12,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:32:12,631 INFO L93 Difference]: Finished difference Result 215 states and 250 transitions. [2023-11-23 20:32:12,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 20:32:12,632 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 23 [2023-11-23 20:32:12,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:32:12,633 INFO L225 Difference]: With dead ends: 215 [2023-11-23 20:32:12,633 INFO L226 Difference]: Without dead ends: 130 [2023-11-23 20:32:12,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-23 20:32:12,637 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 7 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 20:32:12,638 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 322 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 20:32:12,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2023-11-23 20:32:12,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2023-11-23 20:32:12,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 83 states have (on average 1.6024096385542168) internal successors, (133), 114 states have internal predecessors, (133), 12 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-23 20:32:12,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 157 transitions. [2023-11-23 20:32:12,651 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 157 transitions. Word has length 23 [2023-11-23 20:32:12,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:32:12,651 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 157 transitions. [2023-11-23 20:32:12,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 20:32:12,652 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 157 transitions. [2023-11-23 20:32:12,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-23 20:32:12,653 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:32:12,653 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:32:12,679 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e605f52a-d60a-4158-b0a4-435d8ac0f590/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-23 20:32:12,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e605f52a-d60a-4158-b0a4-435d8ac0f590/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:32:12,873 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-11-23 20:32:12,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:32:12,873 INFO L85 PathProgramCache]: Analyzing trace with hash 278672113, now seen corresponding path program 1 times [2023-11-23 20:32:12,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:32:12,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909900992] [2023-11-23 20:32:12,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:32:12,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:32:12,893 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 20:32:12,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [168341158] [2023-11-23 20:32:12,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:32:12,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:32:12,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e605f52a-d60a-4158-b0a4-435d8ac0f590/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:32:12,900 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e605f52a-d60a-4158-b0a4-435d8ac0f590/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 20:32:12,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e605f52a-d60a-4158-b0a4-435d8ac0f590/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-23 20:32:12,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:32:12,952 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 20:32:12,956 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:32:13,014 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 20:32:13,014 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 20:32:13,014 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:32:13,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909900992] [2023-11-23 20:32:13,014 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 20:32:13,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [168341158] [2023-11-23 20:32:13,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [168341158] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:32:13,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:32:13,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 20:32:13,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784025809] [2023-11-23 20:32:13,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:32:13,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 20:32:13,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:32:13,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 20:32:13,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 20:32:13,020 INFO L87 Difference]: Start difference. First operand 130 states and 157 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 20:32:13,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:32:13,213 INFO L93 Difference]: Finished difference Result 218 states and 270 transitions. [2023-11-23 20:32:13,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 20:32:13,213 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 23 [2023-11-23 20:32:13,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:32:13,216 INFO L225 Difference]: With dead ends: 218 [2023-11-23 20:32:13,216 INFO L226 Difference]: Without dead ends: 212 [2023-11-23 20:32:13,217 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 20:32:13,219 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 169 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 20:32:13,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 83 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 20:32:13,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2023-11-23 20:32:13,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 177. [2023-11-23 20:32:13,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 123 states have (on average 1.5772357723577235) internal successors, (194), 153 states have internal predecessors, (194), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-23 20:32:13,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 234 transitions. [2023-11-23 20:32:13,239 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 234 transitions. Word has length 23 [2023-11-23 20:32:13,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:32:13,242 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 234 transitions. [2023-11-23 20:32:13,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 20:32:13,242 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 234 transitions. [2023-11-23 20:32:13,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-23 20:32:13,243 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:32:13,245 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:32:13,270 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e605f52a-d60a-4158-b0a4-435d8ac0f590/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-23 20:32:13,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e605f52a-d60a-4158-b0a4-435d8ac0f590/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:32:13,464 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-11-23 20:32:13,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:32:13,464 INFO L85 PathProgramCache]: Analyzing trace with hash 48901001, now seen corresponding path program 1 times [2023-11-23 20:32:13,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:32:13,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011936887] [2023-11-23 20:32:13,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:32:13,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:32:13,474 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 20:32:13,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1816260725] [2023-11-23 20:32:13,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:32:13,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:32:13,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e605f52a-d60a-4158-b0a4-435d8ac0f590/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:32:13,475 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e605f52a-d60a-4158-b0a4-435d8ac0f590/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 20:32:13,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e605f52a-d60a-4158-b0a4-435d8ac0f590/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-23 20:32:13,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:32:13,525 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 20:32:13,527 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:32:13,578 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 20:32:13,579 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 20:32:13,579 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:32:13,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011936887] [2023-11-23 20:32:13,579 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 20:32:13,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1816260725] [2023-11-23 20:32:13,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1816260725] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:32:13,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:32:13,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 20:32:13,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9016501] [2023-11-23 20:32:13,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:32:13,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 20:32:13,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:32:13,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 20:32:13,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 20:32:13,581 INFO L87 Difference]: Start difference. First operand 177 states and 234 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 20:32:14,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:32:14,016 INFO L93 Difference]: Finished difference Result 275 states and 325 transitions. [2023-11-23 20:32:14,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 20:32:14,016 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 24 [2023-11-23 20:32:14,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:32:14,018 INFO L225 Difference]: With dead ends: 275 [2023-11-23 20:32:14,019 INFO L226 Difference]: Without dead ends: 272 [2023-11-23 20:32:14,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 20:32:14,021 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 147 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 20:32:14,022 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 129 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 20:32:14,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2023-11-23 20:32:14,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 214. [2023-11-23 20:32:14,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 155 states have (on average 1.5741935483870968) internal successors, (244), 185 states have internal predecessors, (244), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-23 20:32:14,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 294 transitions. [2023-11-23 20:32:14,049 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 294 transitions. Word has length 24 [2023-11-23 20:32:14,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:32:14,050 INFO L495 AbstractCegarLoop]: Abstraction has 214 states and 294 transitions. [2023-11-23 20:32:14,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 20:32:14,050 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 294 transitions. [2023-11-23 20:32:14,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-11-23 20:32:14,054 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:32:14,054 INFO L195 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:32:14,079 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e605f52a-d60a-4158-b0a4-435d8ac0f590/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-23 20:32:14,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e605f52a-d60a-4158-b0a4-435d8ac0f590/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-23 20:32:14,279 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-11-23 20:32:14,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:32:14,280 INFO L85 PathProgramCache]: Analyzing trace with hash -401856115, now seen corresponding path program 1 times [2023-11-23 20:32:14,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:32:14,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056266245] [2023-11-23 20:32:14,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:32:14,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:32:14,291 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 20:32:14,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1301454816] [2023-11-23 20:32:14,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:32:14,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:32:14,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e605f52a-d60a-4158-b0a4-435d8ac0f590/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:32:14,293 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e605f52a-d60a-4158-b0a4-435d8ac0f590/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 20:32:14,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e605f52a-d60a-4158-b0a4-435d8ac0f590/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-23 20:32:14,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:32:14,357 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 20:32:14,359 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:32:14,405 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-23 20:32:14,405 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 20:32:14,406 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:32:14,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056266245] [2023-11-23 20:32:14,416 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 20:32:14,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1301454816] [2023-11-23 20:32:14,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1301454816] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:32:14,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:32:14,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 20:32:14,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822976756] [2023-11-23 20:32:14,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:32:14,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 20:32:14,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:32:14,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 20:32:14,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 20:32:14,419 INFO L87 Difference]: Start difference. First operand 214 states and 294 transitions. Second operand has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-23 20:32:14,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:32:14,534 INFO L93 Difference]: Finished difference Result 214 states and 294 transitions. [2023-11-23 20:32:14,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 20:32:14,535 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 38 [2023-11-23 20:32:14,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:32:14,537 INFO L225 Difference]: With dead ends: 214 [2023-11-23 20:32:14,538 INFO L226 Difference]: Without dead ends: 212 [2023-11-23 20:32:14,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 20:32:14,539 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 122 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 20:32:14,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 62 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 20:32:14,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2023-11-23 20:32:14,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 212. [2023-11-23 20:32:14,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 155 states have (on average 1.5290322580645161) internal successors, (237), 183 states have internal predecessors, (237), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-23 20:32:14,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 287 transitions. [2023-11-23 20:32:14,565 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 287 transitions. Word has length 38 [2023-11-23 20:32:14,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:32:14,566 INFO L495 AbstractCegarLoop]: Abstraction has 212 states and 287 transitions. [2023-11-23 20:32:14,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-23 20:32:14,566 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 287 transitions. [2023-11-23 20:32:14,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-23 20:32:14,568 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:32:14,569 INFO L195 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:32:14,593 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e605f52a-d60a-4158-b0a4-435d8ac0f590/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-23 20:32:14,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e605f52a-d60a-4158-b0a4-435d8ac0f590/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-23 20:32:14,785 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-11-23 20:32:14,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:32:14,785 INFO L85 PathProgramCache]: Analyzing trace with hash 427362428, now seen corresponding path program 1 times [2023-11-23 20:32:14,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:32:14,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740691663] [2023-11-23 20:32:14,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:32:14,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:32:14,798 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 20:32:14,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [966671527] [2023-11-23 20:32:14,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:32:14,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:32:14,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e605f52a-d60a-4158-b0a4-435d8ac0f590/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:32:14,800 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e605f52a-d60a-4158-b0a4-435d8ac0f590/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 20:32:14,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e605f52a-d60a-4158-b0a4-435d8ac0f590/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-23 20:32:14,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:32:14,863 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 20:32:14,872 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:32:14,931 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-23 20:32:14,931 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 20:32:14,931 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:32:14,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740691663] [2023-11-23 20:32:14,932 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 20:32:14,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [966671527] [2023-11-23 20:32:14,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [966671527] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:32:14,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:32:14,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 20:32:14,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141341526] [2023-11-23 20:32:14,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:32:14,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 20:32:14,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:32:14,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 20:32:14,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 20:32:14,935 INFO L87 Difference]: Start difference. First operand 212 states and 287 transitions. Second operand has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-23 20:32:15,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:32:15,034 INFO L93 Difference]: Finished difference Result 260 states and 328 transitions. [2023-11-23 20:32:15,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 20:32:15,035 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 39 [2023-11-23 20:32:15,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:32:15,040 INFO L225 Difference]: With dead ends: 260 [2023-11-23 20:32:15,040 INFO L226 Difference]: Without dead ends: 258 [2023-11-23 20:32:15,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 20:32:15,041 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 110 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 20:32:15,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 208 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 20:32:15,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2023-11-23 20:32:15,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 212. [2023-11-23 20:32:15,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 155 states have (on average 1.5161290322580645) internal successors, (235), 183 states have internal predecessors, (235), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-23 20:32:15,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 285 transitions. [2023-11-23 20:32:15,064 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 285 transitions. Word has length 39 [2023-11-23 20:32:15,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:32:15,064 INFO L495 AbstractCegarLoop]: Abstraction has 212 states and 285 transitions. [2023-11-23 20:32:15,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-23 20:32:15,065 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 285 transitions. [2023-11-23 20:32:15,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-23 20:32:15,071 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:32:15,071 INFO L195 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:32:15,095 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e605f52a-d60a-4158-b0a4-435d8ac0f590/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-23 20:32:15,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e605f52a-d60a-4158-b0a4-435d8ac0f590/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-23 20:32:15,295 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-11-23 20:32:15,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:32:15,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1621563628, now seen corresponding path program 1 times [2023-11-23 20:32:15,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:32:15,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549029542] [2023-11-23 20:32:15,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:32:15,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:32:15,306 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 20:32:15,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1182401165] [2023-11-23 20:32:15,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:32:15,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:32:15,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e605f52a-d60a-4158-b0a4-435d8ac0f590/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:32:15,307 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e605f52a-d60a-4158-b0a4-435d8ac0f590/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 20:32:15,312 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e605f52a-d60a-4158-b0a4-435d8ac0f590/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-23 20:32:15,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:32:15,363 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 20:32:15,364 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:32:15,403 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-23 20:32:15,403 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 20:32:15,404 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:32:15,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549029542] [2023-11-23 20:32:15,404 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 20:32:15,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1182401165] [2023-11-23 20:32:15,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1182401165] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:32:15,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:32:15,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 20:32:15,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021599050] [2023-11-23 20:32:15,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:32:15,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:32:15,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:32:15,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:32:15,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:32:15,407 INFO L87 Difference]: Start difference. First operand 212 states and 285 transitions. Second operand has 3 states, 2 states have (on average 13.5) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-23 20:32:15,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:32:15,465 INFO L93 Difference]: Finished difference Result 226 states and 290 transitions. [2023-11-23 20:32:15,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:32:15,465 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 13.5) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 41 [2023-11-23 20:32:15,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:32:15,467 INFO L225 Difference]: With dead ends: 226 [2023-11-23 20:32:15,468 INFO L226 Difference]: Without dead ends: 225 [2023-11-23 20:32:15,468 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:32:15,469 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 20 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 20:32:15,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 131 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 20:32:15,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2023-11-23 20:32:15,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 212. [2023-11-23 20:32:15,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 155 states have (on average 1.5032258064516129) internal successors, (233), 183 states have internal predecessors, (233), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-23 20:32:15,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 283 transitions. [2023-11-23 20:32:15,488 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 283 transitions. Word has length 41 [2023-11-23 20:32:15,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:32:15,489 INFO L495 AbstractCegarLoop]: Abstraction has 212 states and 283 transitions. [2023-11-23 20:32:15,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 13.5) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-23 20:32:15,489 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 283 transitions. [2023-11-23 20:32:15,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-23 20:32:15,490 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:32:15,490 INFO L195 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:32:15,520 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e605f52a-d60a-4158-b0a4-435d8ac0f590/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-23 20:32:15,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e605f52a-d60a-4158-b0a4-435d8ac0f590/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:32:15,701 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-11-23 20:32:15,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:32:15,701 INFO L85 PathProgramCache]: Analyzing trace with hash 1271136500, now seen corresponding path program 1 times [2023-11-23 20:32:15,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:32:15,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073875690] [2023-11-23 20:32:15,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:32:15,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:32:15,720 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 20:32:15,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1718557412] [2023-11-23 20:32:15,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:32:15,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:32:15,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e605f52a-d60a-4158-b0a4-435d8ac0f590/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:32:15,724 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e605f52a-d60a-4158-b0a4-435d8ac0f590/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 20:32:15,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e605f52a-d60a-4158-b0a4-435d8ac0f590/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-23 20:32:15,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:32:15,775 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 20:32:15,777 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:32:15,889 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-23 20:32:15,889 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 20:32:15,889 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:32:15,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073875690] [2023-11-23 20:32:15,889 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 20:32:15,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1718557412] [2023-11-23 20:32:15,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1718557412] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:32:15,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:32:15,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 20:32:15,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444134551] [2023-11-23 20:32:15,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:32:15,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 20:32:15,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:32:15,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 20:32:15,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-23 20:32:15,893 INFO L87 Difference]: Start difference. First operand 212 states and 283 transitions. Second operand has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-23 20:32:16,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:32:16,167 INFO L93 Difference]: Finished difference Result 259 states and 306 transitions. [2023-11-23 20:32:16,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 20:32:16,168 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 42 [2023-11-23 20:32:16,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:32:16,172 INFO L225 Difference]: With dead ends: 259 [2023-11-23 20:32:16,172 INFO L226 Difference]: Without dead ends: 258 [2023-11-23 20:32:16,173 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-23 20:32:16,174 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 167 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 20:32:16,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 212 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 20:32:16,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2023-11-23 20:32:16,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 212. [2023-11-23 20:32:16,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 155 states have (on average 1.4774193548387098) internal successors, (229), 183 states have internal predecessors, (229), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-23 20:32:16,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 279 transitions. [2023-11-23 20:32:16,196 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 279 transitions. Word has length 42 [2023-11-23 20:32:16,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:32:16,196 INFO L495 AbstractCegarLoop]: Abstraction has 212 states and 279 transitions. [2023-11-23 20:32:16,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-23 20:32:16,197 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 279 transitions. [2023-11-23 20:32:16,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-23 20:32:16,198 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:32:16,198 INFO L195 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:32:16,224 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e605f52a-d60a-4158-b0a4-435d8ac0f590/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-23 20:32:16,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e605f52a-d60a-4158-b0a4-435d8ac0f590/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:32:16,413 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-11-23 20:32:16,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:32:16,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1271135218, now seen corresponding path program 1 times [2023-11-23 20:32:16,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:32:16,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572036339] [2023-11-23 20:32:16,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:32:16,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:32:16,423 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 20:32:16,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [464761454] [2023-11-23 20:32:16,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:32:16,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:32:16,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e605f52a-d60a-4158-b0a4-435d8ac0f590/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:32:16,425 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e605f52a-d60a-4158-b0a4-435d8ac0f590/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 20:32:16,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e605f52a-d60a-4158-b0a4-435d8ac0f590/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-23 20:32:16,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:32:16,479 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 20:32:16,480 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:32:16,665 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-23 20:32:16,666 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 20:32:16,666 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:32:16,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572036339] [2023-11-23 20:32:16,666 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 20:32:16,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [464761454] [2023-11-23 20:32:16,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [464761454] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:32:16,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:32:16,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 20:32:16,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538200333] [2023-11-23 20:32:16,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:32:16,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 20:32:16,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:32:16,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 20:32:16,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 20:32:16,669 INFO L87 Difference]: Start difference. First operand 212 states and 279 transitions. Second operand has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-23 20:32:16,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:32:16,781 INFO L93 Difference]: Finished difference Result 212 states and 279 transitions. [2023-11-23 20:32:16,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 20:32:16,781 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 42 [2023-11-23 20:32:16,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:32:16,784 INFO L225 Difference]: With dead ends: 212 [2023-11-23 20:32:16,784 INFO L226 Difference]: Without dead ends: 211 [2023-11-23 20:32:16,786 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 20:32:16,786 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 114 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 20:32:16,787 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 60 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 20:32:16,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2023-11-23 20:32:16,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2023-11-23 20:32:16,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 155 states have (on average 1.4580645161290322) internal successors, (226), 182 states have internal predecessors, (226), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-23 20:32:16,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 276 transitions. [2023-11-23 20:32:16,806 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 276 transitions. Word has length 42 [2023-11-23 20:32:16,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:32:16,807 INFO L495 AbstractCegarLoop]: Abstraction has 211 states and 276 transitions. [2023-11-23 20:32:16,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-23 20:32:16,808 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 276 transitions. [2023-11-23 20:32:16,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-23 20:32:16,809 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:32:16,809 INFO L195 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:32:16,834 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e605f52a-d60a-4158-b0a4-435d8ac0f590/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-23 20:32:17,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e605f52a-d60a-4158-b0a4-435d8ac0f590/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-23 20:32:17,030 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-11-23 20:32:17,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:32:17,030 INFO L85 PathProgramCache]: Analyzing trace with hash 750486230, now seen corresponding path program 1 times [2023-11-23 20:32:17,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:32:17,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328111608] [2023-11-23 20:32:17,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:32:17,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:32:17,040 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 20:32:17,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [282396400] [2023-11-23 20:32:17,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:32:17,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:32:17,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e605f52a-d60a-4158-b0a4-435d8ac0f590/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:32:17,042 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e605f52a-d60a-4158-b0a4-435d8ac0f590/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 20:32:17,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e605f52a-d60a-4158-b0a4-435d8ac0f590/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-23 20:32:17,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:32:17,099 INFO L262 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 20:32:17,100 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:32:17,199 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-23 20:32:17,199 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 20:32:17,199 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:32:17,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328111608] [2023-11-23 20:32:17,199 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 20:32:17,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [282396400] [2023-11-23 20:32:17,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [282396400] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:32:17,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:32:17,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 20:32:17,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144091334] [2023-11-23 20:32:17,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:32:17,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 20:32:17,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:32:17,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 20:32:17,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 20:32:17,202 INFO L87 Difference]: Start difference. First operand 211 states and 276 transitions. Second operand has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-23 20:32:17,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:32:17,470 INFO L93 Difference]: Finished difference Result 211 states and 276 transitions. [2023-11-23 20:32:17,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 20:32:17,471 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 43 [2023-11-23 20:32:17,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:32:17,473 INFO L225 Difference]: With dead ends: 211 [2023-11-23 20:32:17,473 INFO L226 Difference]: Without dead ends: 209 [2023-11-23 20:32:17,473 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 20:32:17,474 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 93 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 20:32:17,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 63 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 20:32:17,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2023-11-23 20:32:17,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2023-11-23 20:32:17,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 155 states have (on average 1.4258064516129032) internal successors, (221), 180 states have internal predecessors, (221), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-23 20:32:17,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 271 transitions. [2023-11-23 20:32:17,493 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 271 transitions. Word has length 43 [2023-11-23 20:32:17,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:32:17,493 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 271 transitions. [2023-11-23 20:32:17,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-23 20:32:17,493 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 271 transitions. [2023-11-23 20:32:17,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-11-23 20:32:17,494 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:32:17,494 INFO L195 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:32:17,520 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e605f52a-d60a-4158-b0a4-435d8ac0f590/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-23 20:32:17,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e605f52a-d60a-4158-b0a4-435d8ac0f590/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-23 20:32:17,716 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-11-23 20:32:17,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:32:17,716 INFO L85 PathProgramCache]: Analyzing trace with hash 1790236788, now seen corresponding path program 1 times [2023-11-23 20:32:17,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:32:17,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251902088] [2023-11-23 20:32:17,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:32:17,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:32:17,724 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 20:32:17,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [945606274] [2023-11-23 20:32:17,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:32:17,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:32:17,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e605f52a-d60a-4158-b0a4-435d8ac0f590/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:32:17,727 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e605f52a-d60a-4158-b0a4-435d8ac0f590/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 20:32:17,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e605f52a-d60a-4158-b0a4-435d8ac0f590/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-23 20:32:17,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:32:17,777 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 20:32:17,779 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:32:17,878 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-23 20:32:17,878 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 20:32:17,879 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:32:17,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251902088] [2023-11-23 20:32:17,879 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 20:32:17,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [945606274] [2023-11-23 20:32:17,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [945606274] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:32:17,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:32:17,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 20:32:17,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104952142] [2023-11-23 20:32:17,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:32:17,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 20:32:17,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:32:17,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 20:32:17,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 20:32:17,882 INFO L87 Difference]: Start difference. First operand 209 states and 271 transitions. Second operand has 4 states, 3 states have (on average 10.0) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-23 20:32:17,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:32:17,975 INFO L93 Difference]: Finished difference Result 227 states and 282 transitions. [2023-11-23 20:32:17,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 20:32:17,975 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.0) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 44 [2023-11-23 20:32:17,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:32:17,977 INFO L225 Difference]: With dead ends: 227 [2023-11-23 20:32:17,977 INFO L226 Difference]: Without dead ends: 226 [2023-11-23 20:32:17,978 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 20:32:17,979 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 58 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 20:32:17,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 135 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 20:32:17,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2023-11-23 20:32:17,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 213. [2023-11-23 20:32:17,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 159 states have (on average 1.4150943396226414) internal successors, (225), 184 states have internal predecessors, (225), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-23 20:32:17,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 275 transitions. [2023-11-23 20:32:17,997 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 275 transitions. Word has length 44 [2023-11-23 20:32:17,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:32:17,997 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 275 transitions. [2023-11-23 20:32:17,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.0) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-23 20:32:17,998 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 275 transitions. [2023-11-23 20:32:17,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-11-23 20:32:17,998 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:32:17,998 INFO L195 NwaCegarLoop]: trace histogram [5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:32:18,025 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e605f52a-d60a-4158-b0a4-435d8ac0f590/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-23 20:32:18,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e605f52a-d60a-4158-b0a4-435d8ac0f590/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-23 20:32:18,219 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-11-23 20:32:18,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:32:18,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1959686662, now seen corresponding path program 1 times [2023-11-23 20:32:18,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:32:18,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809076789] [2023-11-23 20:32:18,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:32:18,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:32:18,228 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 20:32:18,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [480970862] [2023-11-23 20:32:18,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:32:18,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:32:18,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e605f52a-d60a-4158-b0a4-435d8ac0f590/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:32:18,235 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e605f52a-d60a-4158-b0a4-435d8ac0f590/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 20:32:18,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e605f52a-d60a-4158-b0a4-435d8ac0f590/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-23 20:32:18,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:32:18,291 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 20:32:18,294 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:32:18,381 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-23 20:32:18,381 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 20:32:18,531 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-23 20:32:18,532 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:32:18,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809076789] [2023-11-23 20:32:18,532 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 20:32:18,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [480970862] [2023-11-23 20:32:18,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [480970862] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-23 20:32:18,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 20:32:18,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 11 [2023-11-23 20:32:18,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825381391] [2023-11-23 20:32:18,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:32:18,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 20:32:18,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:32:18,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 20:32:18,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2023-11-23 20:32:18,535 INFO L87 Difference]: Start difference. First operand 213 states and 275 transitions. Second operand has 7 states, 6 states have (on average 5.5) internal successors, (33), 7 states have internal predecessors, (33), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-23 20:32:18,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:32:18,688 INFO L93 Difference]: Finished difference Result 244 states and 296 transitions. [2023-11-23 20:32:18,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-23 20:32:18,689 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.5) internal successors, (33), 7 states have internal predecessors, (33), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 47 [2023-11-23 20:32:18,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:32:18,691 INFO L225 Difference]: With dead ends: 244 [2023-11-23 20:32:18,691 INFO L226 Difference]: Without dead ends: 243 [2023-11-23 20:32:18,692 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2023-11-23 20:32:18,693 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 77 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 20:32:18,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 348 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 20:32:18,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2023-11-23 20:32:18,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 215. [2023-11-23 20:32:18,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 160 states have (on average 1.4) internal successors, (224), 185 states have internal predecessors, (224), 25 states have call successors, (25), 4 states have call predecessors, (25), 4 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-23 20:32:18,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 274 transitions. [2023-11-23 20:32:18,715 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 274 transitions. Word has length 47 [2023-11-23 20:32:18,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:32:18,716 INFO L495 AbstractCegarLoop]: Abstraction has 215 states and 274 transitions. [2023-11-23 20:32:18,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.5) internal successors, (33), 7 states have internal predecessors, (33), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-23 20:32:18,716 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 274 transitions. [2023-11-23 20:32:18,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-11-23 20:32:18,717 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:32:18,717 INFO L195 NwaCegarLoop]: trace histogram [5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:32:18,738 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e605f52a-d60a-4158-b0a4-435d8ac0f590/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-23 20:32:18,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e605f52a-d60a-4158-b0a4-435d8ac0f590/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-23 20:32:18,933 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-11-23 20:32:18,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:32:18,933 INFO L85 PathProgramCache]: Analyzing trace with hash -2063204810, now seen corresponding path program 1 times [2023-11-23 20:32:18,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:32:18,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974239060] [2023-11-23 20:32:18,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:32:18,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:32:18,942 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 20:32:18,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [561588978] [2023-11-23 20:32:18,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:32:18,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:32:18,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e605f52a-d60a-4158-b0a4-435d8ac0f590/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:32:18,944 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e605f52a-d60a-4158-b0a4-435d8ac0f590/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 20:32:18,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e605f52a-d60a-4158-b0a4-435d8ac0f590/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-23 20:32:19,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:32:19,007 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-23 20:32:19,009 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:32:19,109 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-23 20:32:19,110 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 20:32:19,223 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-23 20:32:19,223 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:32:19,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974239060] [2023-11-23 20:32:19,223 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 20:32:19,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [561588978] [2023-11-23 20:32:19,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [561588978] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 20:32:19,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1923572421] [2023-11-23 20:32:19,250 INFO L159 IcfgInterpreter]: Started Sifa with 38 locations of interest [2023-11-23 20:32:19,250 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 20:32:19,255 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 20:32:19,261 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 20:32:19,261 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-23 20:32:28,295 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 6 for LOIs [2023-11-23 20:32:28,297 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-23 20:32:33,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1923572421] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:32:33,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-23 20:32:33,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [7, 8] total 26 [2023-11-23 20:32:33,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202931685] [2023-11-23 20:32:33,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:32:33,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-23 20:32:33,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:32:33,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-23 20:32:33,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=515, Unknown=0, NotChecked=0, Total=650 [2023-11-23 20:32:33,687 INFO L87 Difference]: Start difference. First operand 215 states and 274 transitions. Second operand has 14 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 12 states have internal predecessors, (32), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-23 20:32:35,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:32:35,244 INFO L93 Difference]: Finished difference Result 385 states and 487 transitions. [2023-11-23 20:32:35,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-23 20:32:35,245 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 12 states have internal predecessors, (32), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 49 [2023-11-23 20:32:35,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:32:35,248 INFO L225 Difference]: With dead ends: 385 [2023-11-23 20:32:35,248 INFO L226 Difference]: Without dead ends: 234 [2023-11-23 20:32:35,249 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 100 SyntacticMatches, 21 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 605 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=156, Invalid=600, Unknown=0, NotChecked=0, Total=756 [2023-11-23 20:32:35,250 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 25 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 711 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 711 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-23 20:32:35,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 171 Invalid, 728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 711 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-23 20:32:35,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2023-11-23 20:32:35,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 216. [2023-11-23 20:32:35,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 158 states have (on average 1.3227848101265822) internal successors, (209), 184 states have internal predecessors, (209), 26 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-23 20:32:35,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 261 transitions. [2023-11-23 20:32:35,287 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 261 transitions. Word has length 49 [2023-11-23 20:32:35,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:32:35,288 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 261 transitions. [2023-11-23 20:32:35,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 12 states have internal predecessors, (32), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-23 20:32:35,288 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 261 transitions. [2023-11-23 20:32:35,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-11-23 20:32:35,289 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:32:35,290 INFO L195 NwaCegarLoop]: trace histogram [6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:32:35,322 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e605f52a-d60a-4158-b0a4-435d8ac0f590/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-11-23 20:32:35,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e605f52a-d60a-4158-b0a4-435d8ac0f590/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:32:35,505 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-11-23 20:32:35,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:32:35,505 INFO L85 PathProgramCache]: Analyzing trace with hash 368831322, now seen corresponding path program 1 times [2023-11-23 20:32:35,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:32:35,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845840381] [2023-11-23 20:32:35,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:32:35,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:32:35,524 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 20:32:35,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [192048865] [2023-11-23 20:32:35,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:32:35,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:32:35,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e605f52a-d60a-4158-b0a4-435d8ac0f590/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:32:35,530 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e605f52a-d60a-4158-b0a4-435d8ac0f590/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 20:32:35,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e605f52a-d60a-4158-b0a4-435d8ac0f590/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-23 20:32:35,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:32:35,621 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 20:32:35,623 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:32:35,741 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-23 20:32:35,741 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 20:32:35,870 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-23 20:32:35,871 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:32:35,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845840381] [2023-11-23 20:32:35,871 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 20:32:35,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [192048865] [2023-11-23 20:32:35,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [192048865] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 20:32:35,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [927590678] [2023-11-23 20:32:35,884 INFO L159 IcfgInterpreter]: Started Sifa with 42 locations of interest [2023-11-23 20:32:35,884 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 20:32:35,884 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 20:32:35,885 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 20:32:35,885 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-23 20:32:42,034 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-11-23 20:32:42,037 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-23 20:32:49,025 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '10709#(and (<= 2 |ULTIMATE.start_main_~x~0#1|) (<= 1 |#StackHeapBarrier|) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= |ULTIMATE.start_main_~r~0#1| 2147483647) (<= 2 |ULTIMATE.start_main_~r~0#1|) (= ~counter~0 |ULTIMATE.start_main_#t~post7#1|) (<= 2147483647 |ULTIMATE.start_main_#t~post7#1|) (= |ULTIMATE.start_main_~q~0#1| 0) (<= |ULTIMATE.start_main_~y~0#1| 1073741823) (<= 0 (+ 4611686018427387903 (div (* (- 1) |ULTIMATE.start_main_~b~0#1|) 2))) (<= (+ (div (* (- 1) |ULTIMATE.start_main_~b~0#1|) 2) 1) 0) (= (mod |ULTIMATE.start_main_~b~0#1| 2) 0))' at error location [2023-11-23 20:32:49,026 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-23 20:32:49,026 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 20:32:49,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-11-23 20:32:49,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148495142] [2023-11-23 20:32:49,028 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 20:32:49,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-23 20:32:49,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:32:49,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-23 20:32:49,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=655, Unknown=0, NotChecked=0, Total=812 [2023-11-23 20:32:49,030 INFO L87 Difference]: Start difference. First operand 216 states and 261 transitions. Second operand has 12 states, 11 states have (on average 6.545454545454546) internal successors, (72), 12 states have internal predecessors, (72), 4 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2023-11-23 20:32:49,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:32:49,362 INFO L93 Difference]: Finished difference Result 390 states and 465 transitions. [2023-11-23 20:32:49,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-23 20:32:49,362 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.545454545454546) internal successors, (72), 12 states have internal predecessors, (72), 4 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 54 [2023-11-23 20:32:49,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:32:49,366 INFO L225 Difference]: With dead ends: 390 [2023-11-23 20:32:49,366 INFO L226 Difference]: Without dead ends: 389 [2023-11-23 20:32:49,367 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 115 SyntacticMatches, 20 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 825 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=272, Invalid=1288, Unknown=0, NotChecked=0, Total=1560 [2023-11-23 20:32:49,368 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 235 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 480 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 20:32:49,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 480 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 20:32:49,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2023-11-23 20:32:49,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 330. [2023-11-23 20:32:49,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 254 states have (on average 1.3700787401574803) internal successors, (348), 280 states have internal predecessors, (348), 42 states have call successors, (42), 8 states have call predecessors, (42), 8 states have return successors, (42), 41 states have call predecessors, (42), 42 states have call successors, (42) [2023-11-23 20:32:49,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 432 transitions. [2023-11-23 20:32:49,403 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 432 transitions. Word has length 54 [2023-11-23 20:32:49,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:32:49,404 INFO L495 AbstractCegarLoop]: Abstraction has 330 states and 432 transitions. [2023-11-23 20:32:49,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.545454545454546) internal successors, (72), 12 states have internal predecessors, (72), 4 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2023-11-23 20:32:49,404 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 432 transitions. [2023-11-23 20:32:49,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-23 20:32:49,405 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:32:49,405 INFO L195 NwaCegarLoop]: trace histogram [6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:32:49,423 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e605f52a-d60a-4158-b0a4-435d8ac0f590/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-11-23 20:32:49,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e605f52a-d60a-4158-b0a4-435d8ac0f590/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:32:49,621 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-11-23 20:32:49,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:32:49,621 INFO L85 PathProgramCache]: Analyzing trace with hash -2035382390, now seen corresponding path program 1 times [2023-11-23 20:32:49,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:32:49,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981061332] [2023-11-23 20:32:49,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:32:49,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:32:49,629 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 20:32:49,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2079534943] [2023-11-23 20:32:49,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:32:49,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:32:49,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e605f52a-d60a-4158-b0a4-435d8ac0f590/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:32:49,631 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e605f52a-d60a-4158-b0a4-435d8ac0f590/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 20:32:49,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e605f52a-d60a-4158-b0a4-435d8ac0f590/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-23 20:32:49,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:32:49,687 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-23 20:32:49,689 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:32:49,771 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-23 20:32:49,771 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 20:32:49,879 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-23 20:32:49,879 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:32:49,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981061332] [2023-11-23 20:32:49,879 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 20:32:49,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2079534943] [2023-11-23 20:32:49,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2079534943] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 20:32:49,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [189689236] [2023-11-23 20:32:49,882 INFO L159 IcfgInterpreter]: Started Sifa with 43 locations of interest [2023-11-23 20:32:49,883 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 20:32:49,883 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 20:32:49,883 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 20:32:49,884 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-23 20:32:55,213 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-11-23 20:32:55,214 INFO L180 IcfgInterpreter]: Interpretation finished